new two advisories and sprints work on them
This commit is contained in:
master
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// -----------------------------------------------------------------------------
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// RekorVerificationOptions.cs
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// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
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// Task: PRV-001 - Add RekorVerificationOptions configuration class
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// Description: Configuration options for periodic Rekor transparency log verification
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// -----------------------------------------------------------------------------
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namespace StellaOps.Attestor.Core.Options;
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/// <summary>
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/// Configuration options for periodic Rekor transparency log verification.
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/// </summary>
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/// <remarks>
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/// This configuration controls a scheduled background job that periodically re-verifies
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/// Rekor transparency log entries to detect tampering, time-skew violations, and root
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/// consistency issues. This provides long-term audit assurance of logged attestations.
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/// </remarks>
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public sealed class RekorVerificationOptions
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{
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/// <summary>
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/// Configuration section name for binding.
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/// </summary>
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public const string SectionName = "Attestor:RekorVerification";
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/// <summary>
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/// Enable periodic Rekor verification.
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/// </summary>
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public bool Enabled { get; set; } = true;
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/// <summary>
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/// Cron expression for verification schedule. Default: daily at 3 AM UTC.
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/// </summary>
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/// <remarks>
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/// Uses standard cron format: minute hour day-of-month month day-of-week.
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/// Examples:
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/// - "0 3 * * *" = Daily at 3:00 AM UTC
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/// - "0 */6 * * *" = Every 6 hours
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/// - "0 0 * * 0" = Weekly on Sunday at midnight
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/// </remarks>
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public string CronSchedule { get; set; } = "0 3 * * *";
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/// <summary>
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/// Maximum number of entries to verify per run.
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/// </summary>
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/// <remarks>
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/// Limits the batch size to prevent excessive API calls and processing time.
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/// Combined with SampleRate, this controls the total verification load.
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/// </remarks>
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public int MaxEntriesPerRun { get; set; } = 1000;
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/// <summary>
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/// Sample rate for entries (0.0-1.0). 1.0 = verify all eligible, 0.1 = verify 10%.
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/// </summary>
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/// <remarks>
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/// For large deployments, full verification of all entries may be impractical.
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/// Sampling provides statistical assurance while limiting API load.
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/// </remarks>
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public double SampleRate { get; set; } = 0.1;
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/// <summary>
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/// Maximum allowed time skew between build timestamp and integratedTime (seconds).
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/// </summary>
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/// <remarks>
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/// Time skew detection helps identify clock synchronization issues or potential
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/// tampering. A value of 300 seconds (5 minutes) accounts for typical clock drift
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/// and network delays.
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/// </remarks>
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public int MaxTimeSkewSeconds { get; set; } = 300; // 5 minutes
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/// <summary>
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/// Days to look back for entries to verify.
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/// </summary>
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/// <remarks>
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/// Limits verification to recent entries. Older entries are assumed to have been
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/// verified previously. Set to 0 to verify all entries regardless of age.
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/// </remarks>
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public int LookbackDays { get; set; } = 90;
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/// <summary>
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/// Rekor server URL for verification.
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/// </summary>
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/// <remarks>
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/// Should match the server where entries were originally submitted.
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/// For air-gapped environments, this should point to the local Rekor instance.
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/// </remarks>
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public string RekorUrl { get; set; } = "https://rekor.sigstore.dev";
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/// <summary>
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/// Enable alerting on verification failures.
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/// </summary>
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public bool AlertOnFailure { get; set; } = true;
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/// <summary>
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/// Threshold for triggering critical alert (percentage of failed verifications).
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/// </summary>
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/// <remarks>
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/// When the failure rate exceeds this threshold, a critical alert is raised.
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/// Set to 0.05 (5%) by default to catch systemic issues while tolerating
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/// occasional transient failures.
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/// </remarks>
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public double CriticalFailureThreshold { get; set; } = 0.05; // 5%
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/// <summary>
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/// Minimum interval between verifications of the same entry (hours).
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/// </summary>
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/// <remarks>
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/// Prevents over-verification of the same entries. Entries verified within
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/// this window are excluded from subsequent runs.
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/// </remarks>
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public int MinReverificationIntervalHours { get; set; } = 168; // 7 days
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/// <summary>
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/// Enable root consistency monitoring against stored checkpoints.
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/// </summary>
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public bool EnableRootConsistencyCheck { get; set; } = true;
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/// <summary>
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/// Number of root checkpoints to store for consistency verification.
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/// </summary>
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public int RootCheckpointRetentionCount { get; set; } = 100;
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/// <summary>
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/// Timeout for individual entry verification (seconds).
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/// </summary>
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public int VerificationTimeoutSeconds { get; set; } = 30;
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/// <summary>
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/// Maximum parallel verification requests.
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/// </summary>
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/// <remarks>
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/// Controls concurrency to avoid overwhelming the Rekor API.
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/// </remarks>
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public int MaxParallelVerifications { get; set; } = 10;
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/// <summary>
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/// Enable offline verification using stored inclusion proofs.
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/// </summary>
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/// <remarks>
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/// When enabled, verification will use stored inclusion proofs without
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/// contacting the Rekor server. Useful for air-gapped deployments.
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/// </remarks>
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public bool EnableOfflineVerification { get; set; } = false;
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/// <summary>
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/// Validates the configuration options.
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/// </summary>
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/// <returns>List of validation errors, empty if valid.</returns>
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public IReadOnlyList<string> Validate()
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{
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var errors = new List<string>();
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if (SampleRate is < 0.0 or > 1.0)
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{
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errors.Add($"SampleRate must be between 0.0 and 1.0, got {SampleRate}");
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}
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if (MaxEntriesPerRun <= 0)
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{
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errors.Add($"MaxEntriesPerRun must be positive, got {MaxEntriesPerRun}");
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}
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if (MaxTimeSkewSeconds < 0)
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{
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errors.Add($"MaxTimeSkewSeconds must be non-negative, got {MaxTimeSkewSeconds}");
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}
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if (LookbackDays < 0)
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{
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errors.Add($"LookbackDays must be non-negative, got {LookbackDays}");
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}
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if (string.IsNullOrWhiteSpace(RekorUrl))
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{
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errors.Add("RekorUrl must be specified");
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}
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if (CriticalFailureThreshold is < 0.0 or > 1.0)
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{
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errors.Add($"CriticalFailureThreshold must be between 0.0 and 1.0, got {CriticalFailureThreshold}");
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}
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if (VerificationTimeoutSeconds <= 0)
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{
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errors.Add($"VerificationTimeoutSeconds must be positive, got {VerificationTimeoutSeconds}");
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}
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if (MaxParallelVerifications <= 0)
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{
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errors.Add($"MaxParallelVerifications must be positive, got {MaxParallelVerifications}");
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}
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if (string.IsNullOrWhiteSpace(CronSchedule))
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{
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errors.Add("CronSchedule must be specified");
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}
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return errors;
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}
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}
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@@ -0,0 +1,416 @@
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// -----------------------------------------------------------------------------
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// IRekorVerificationService.cs
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// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
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// Task: PRV-002 - Implement IRekorVerificationService interface and service
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// Description: Interface for periodic Rekor entry verification
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// -----------------------------------------------------------------------------
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namespace StellaOps.Attestor.Core.Verification;
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/// <summary>
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/// Service for verifying Rekor transparency log entries.
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/// </summary>
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public interface IRekorVerificationService
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{
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/// <summary>
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/// Verifies a single Rekor entry for signature validity, inclusion proof, and time skew.
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/// </summary>
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/// <param name="entry">The Rekor entry to verify.</param>
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/// <param name="ct">Cancellation token.</param>
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/// <returns>Verification result.</returns>
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Task<RekorVerificationResult> VerifyEntryAsync(
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RekorEntryReference entry,
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CancellationToken ct = default);
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/// <summary>
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/// Verifies multiple Rekor entries in batch with parallel execution.
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/// </summary>
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/// <param name="entries">The entries to verify.</param>
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/// <param name="ct">Cancellation token.</param>
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/// <returns>Batch verification result.</returns>
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Task<RekorBatchVerificationResult> VerifyBatchAsync(
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IReadOnlyList<RekorEntryReference> entries,
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CancellationToken ct = default);
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/// <summary>
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/// Verifies tree root consistency against a stored checkpoint.
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/// </summary>
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/// <param name="expectedTreeRoot">The expected tree root hash.</param>
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/// <param name="expectedTreeSize">The expected tree size.</param>
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/// <param name="ct">Cancellation token.</param>
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/// <returns>Root consistency result.</returns>
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Task<RootConsistencyResult> VerifyRootConsistencyAsync(
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string expectedTreeRoot,
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long expectedTreeSize,
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CancellationToken ct = default);
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}
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/// <summary>
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/// Reference to a stored Rekor entry for verification.
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/// </summary>
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public sealed record RekorEntryReference
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{
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/// <summary>
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/// Rekor entry UUID (64-character hex string).
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/// </summary>
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public required string Uuid { get; init; }
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/// <summary>
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/// Rekor log index (monotonically increasing).
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/// </summary>
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public required long LogIndex { get; init; }
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/// <summary>
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/// Time the entry was integrated into the log.
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/// </summary>
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public required DateTimeOffset IntegratedTime { get; init; }
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/// <summary>
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/// SHA-256 hash of the entry body.
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/// </summary>
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public required string EntryBodyHash { get; init; }
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/// <summary>
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/// Expected build/creation timestamp for time skew detection.
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/// </summary>
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public DateTimeOffset? ExpectedBuildTime { get; init; }
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/// <summary>
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/// Stored inclusion proof for offline verification.
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/// </summary>
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public StoredInclusionProof? InclusionProof { get; init; }
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/// <summary>
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/// Rekor backend URL where this entry was submitted.
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/// </summary>
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public string? RekorUrl { get; init; }
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/// <summary>
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/// Last successful verification timestamp.
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/// </summary>
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public DateTimeOffset? LastVerifiedAt { get; init; }
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/// <summary>
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/// Number of times this entry has been verified.
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/// </summary>
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public int VerificationCount { get; init; }
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}
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/// <summary>
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/// Stored inclusion proof for offline verification.
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/// </summary>
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public sealed record StoredInclusionProof
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{
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/// <summary>
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/// Index of the entry in the tree.
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/// </summary>
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public required long LeafIndex { get; init; }
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/// <summary>
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/// Tree size at time of proof generation.
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/// </summary>
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public required long TreeSize { get; init; }
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/// <summary>
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/// Root hash at time of proof generation.
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/// </summary>
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public required string RootHash { get; init; }
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/// <summary>
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/// Hashes of sibling nodes from leaf to root (base64 encoded).
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/// </summary>
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public required IReadOnlyList<string> Hashes { get; init; }
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/// <summary>
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/// Signed checkpoint envelope.
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/// </summary>
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public string? CheckpointEnvelope { get; init; }
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}
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/// <summary>
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/// Result of verifying a single Rekor entry.
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/// </summary>
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public sealed record RekorVerificationResult
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{
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/// <summary>
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/// Rekor entry UUID that was verified.
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/// </summary>
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public required string EntryUuid { get; init; }
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/// <summary>
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/// Whether the entry passed all verification checks.
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/// </summary>
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public required bool IsValid { get; init; }
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/// <summary>
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/// Whether the entry signature is valid.
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/// </summary>
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public required bool SignatureValid { get; init; }
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/// <summary>
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/// Whether the inclusion proof is valid.
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/// </summary>
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public required bool InclusionProofValid { get; init; }
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/// <summary>
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/// Whether the time skew is within acceptable bounds.
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/// </summary>
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public required bool TimeSkewValid { get; init; }
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/// <summary>
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/// Actual time skew between expected and integrated time (null if not computed).
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/// </summary>
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public TimeSpan? TimeSkewAmount { get; init; }
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/// <summary>
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/// Failure reason if verification failed.
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/// </summary>
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public string? FailureReason { get; init; }
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/// <summary>
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/// Detailed failure code for categorization.
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/// </summary>
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public RekorVerificationFailureCode? FailureCode { get; init; }
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/// <summary>
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/// Timestamp when verification was performed.
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/// </summary>
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public required DateTimeOffset VerifiedAt { get; init; }
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/// <summary>
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/// Duration of the verification operation.
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/// </summary>
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public TimeSpan? Duration { get; init; }
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/// <summary>
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/// Creates a successful verification result.
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/// </summary>
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public static RekorVerificationResult Success(
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string entryUuid,
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TimeSpan? timeSkew,
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DateTimeOffset verifiedAt,
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TimeSpan? duration = null) => new()
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{
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EntryUuid = entryUuid,
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IsValid = true,
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SignatureValid = true,
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InclusionProofValid = true,
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TimeSkewValid = true,
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TimeSkewAmount = timeSkew,
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VerifiedAt = verifiedAt,
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Duration = duration
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};
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/// <summary>
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/// Creates a failed verification result.
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/// </summary>
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public static RekorVerificationResult Failure(
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string entryUuid,
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string reason,
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RekorVerificationFailureCode code,
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DateTimeOffset verifiedAt,
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bool signatureValid = false,
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bool inclusionProofValid = false,
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bool timeSkewValid = false,
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TimeSpan? timeSkewAmount = null,
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TimeSpan? duration = null) => new()
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{
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EntryUuid = entryUuid,
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IsValid = false,
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SignatureValid = signatureValid,
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InclusionProofValid = inclusionProofValid,
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TimeSkewValid = timeSkewValid,
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TimeSkewAmount = timeSkewAmount,
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FailureReason = reason,
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FailureCode = code,
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VerifiedAt = verifiedAt,
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Duration = duration
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};
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}
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/// <summary>
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/// Categorized failure codes for Rekor verification.
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/// </summary>
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public enum RekorVerificationFailureCode
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{
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/// <summary>
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/// Entry not found in Rekor log.
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/// </summary>
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EntryNotFound,
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/// <summary>
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/// Entry signature is invalid.
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/// </summary>
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InvalidSignature,
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/// <summary>
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/// Inclusion proof verification failed.
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/// </summary>
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InvalidInclusionProof,
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/// <summary>
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/// Time skew exceeds configured threshold.
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/// </summary>
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TimeSkewExceeded,
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/// <summary>
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/// Entry body hash mismatch.
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/// </summary>
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BodyHashMismatch,
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/// <summary>
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/// Log index mismatch.
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/// </summary>
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LogIndexMismatch,
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/// <summary>
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/// Network or API error during verification.
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/// </summary>
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NetworkError,
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/// <summary>
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/// Verification timed out.
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/// </summary>
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Timeout,
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/// <summary>
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/// Unknown or unexpected error.
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/// </summary>
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||||
Unknown
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}
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/// <summary>
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||||
/// Result of batch verification of multiple Rekor entries.
|
||||
/// </summary>
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||||
public sealed record RekorBatchVerificationResult
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||||
{
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/// <summary>
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||||
/// Total entries attempted.
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||||
/// </summary>
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||||
public required int TotalEntries { get; init; }
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||||
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||||
/// <summary>
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||||
/// Entries that passed verification.
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||||
/// </summary>
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||||
public required int ValidEntries { get; init; }
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||||
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||||
/// <summary>
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||||
/// Entries that failed verification.
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||||
/// </summary>
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||||
public required int InvalidEntries { get; init; }
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||||
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||||
/// <summary>
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||||
/// Entries that were skipped (e.g., network errors, timeouts).
|
||||
/// </summary>
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||||
public required int SkippedEntries { get; init; }
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||||
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||||
/// <summary>
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||||
/// Detailed results for failed entries.
|
||||
/// </summary>
|
||||
public required IReadOnlyList<RekorVerificationResult> Failures { get; init; }
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||||
|
||||
/// <summary>
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||||
/// Detailed results for all entries (if full reporting enabled).
|
||||
/// </summary>
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||||
public IReadOnlyList<RekorVerificationResult>? AllResults { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Timestamp when batch verification started.
|
||||
/// </summary>
|
||||
public required DateTimeOffset StartedAt { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Timestamp when batch verification completed.
|
||||
/// </summary>
|
||||
public required DateTimeOffset CompletedAt { get; init; }
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||||
|
||||
/// <summary>
|
||||
/// Total duration of the batch verification.
|
||||
/// </summary>
|
||||
public TimeSpan Duration => CompletedAt - StartedAt;
|
||||
|
||||
/// <summary>
|
||||
/// Failure rate as a percentage (0.0-1.0).
|
||||
/// </summary>
|
||||
public double FailureRate => TotalEntries > 0 ? (double)InvalidEntries / TotalEntries : 0.0;
|
||||
|
||||
/// <summary>
|
||||
/// Whether the batch verification is considered successful (failure rate below threshold).
|
||||
/// </summary>
|
||||
public bool IsSuccessful(double criticalThreshold) => FailureRate < criticalThreshold;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Result of root consistency verification.
|
||||
/// </summary>
|
||||
public sealed record RootConsistencyResult
|
||||
{
|
||||
/// <summary>
|
||||
/// Whether the root is consistent with the expected checkpoint.
|
||||
/// </summary>
|
||||
public required bool IsConsistent { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Current tree root from the Rekor log.
|
||||
/// </summary>
|
||||
public required string CurrentTreeRoot { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Current tree size from the Rekor log.
|
||||
/// </summary>
|
||||
public required long CurrentTreeSize { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Expected tree root from stored checkpoint.
|
||||
/// </summary>
|
||||
public string? ExpectedTreeRoot { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Expected tree size from stored checkpoint.
|
||||
/// </summary>
|
||||
public long? ExpectedTreeSize { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Reason for inconsistency if not consistent.
|
||||
/// </summary>
|
||||
public string? InconsistencyReason { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Timestamp when consistency was verified.
|
||||
/// </summary>
|
||||
public required DateTimeOffset VerifiedAt { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Creates a consistent result.
|
||||
/// </summary>
|
||||
public static RootConsistencyResult Consistent(
|
||||
string currentRoot,
|
||||
long currentSize,
|
||||
DateTimeOffset verifiedAt) => new()
|
||||
{
|
||||
IsConsistent = true,
|
||||
CurrentTreeRoot = currentRoot,
|
||||
CurrentTreeSize = currentSize,
|
||||
VerifiedAt = verifiedAt
|
||||
};
|
||||
|
||||
/// <summary>
|
||||
/// Creates an inconsistent result.
|
||||
/// </summary>
|
||||
public static RootConsistencyResult Inconsistent(
|
||||
string currentRoot,
|
||||
long currentSize,
|
||||
string expectedRoot,
|
||||
long expectedSize,
|
||||
string reason,
|
||||
DateTimeOffset verifiedAt) => new()
|
||||
{
|
||||
IsConsistent = false,
|
||||
CurrentTreeRoot = currentRoot,
|
||||
CurrentTreeSize = currentSize,
|
||||
ExpectedTreeRoot = expectedRoot,
|
||||
ExpectedTreeSize = expectedSize,
|
||||
InconsistencyReason = reason,
|
||||
VerifiedAt = verifiedAt
|
||||
};
|
||||
}
|
||||
@@ -0,0 +1,368 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorVerificationHealthCheck.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-006 - Implement Doctor health check for Rekor verification
|
||||
// Description: Health check for monitoring Rekor verification job status
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using Microsoft.Extensions.Diagnostics.HealthChecks;
|
||||
using Microsoft.Extensions.Logging;
|
||||
using Microsoft.Extensions.Options;
|
||||
using StellaOps.Attestor.Core.Options;
|
||||
|
||||
namespace StellaOps.Attestor.Core.Verification;
|
||||
|
||||
/// <summary>
|
||||
/// Health check for the Rekor verification job.
|
||||
/// Reports on last run status, failure rates, and job health.
|
||||
/// </summary>
|
||||
public sealed class RekorVerificationHealthCheck : IHealthCheck
|
||||
{
|
||||
private readonly IRekorVerificationStatusProvider _statusProvider;
|
||||
private readonly IOptions<RekorVerificationOptions> _options;
|
||||
private readonly ILogger<RekorVerificationHealthCheck> _logger;
|
||||
|
||||
/// <summary>
|
||||
/// Health check name.
|
||||
/// </summary>
|
||||
public const string Name = "rekor-verification";
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="RekorVerificationHealthCheck"/> class.
|
||||
/// </summary>
|
||||
public RekorVerificationHealthCheck(
|
||||
IRekorVerificationStatusProvider statusProvider,
|
||||
IOptions<RekorVerificationOptions> options,
|
||||
ILogger<RekorVerificationHealthCheck> logger)
|
||||
{
|
||||
_statusProvider = statusProvider ?? throw new ArgumentNullException(nameof(statusProvider));
|
||||
_options = options ?? throw new ArgumentNullException(nameof(options));
|
||||
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
public async Task<HealthCheckResult> CheckHealthAsync(
|
||||
HealthCheckContext context,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var opts = _options.Value;
|
||||
|
||||
// If disabled, report healthy with note
|
||||
if (!opts.Enabled)
|
||||
{
|
||||
return HealthCheckResult.Healthy("Rekor verification is disabled");
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
var status = await _statusProvider.GetStatusAsync(cancellationToken);
|
||||
|
||||
var data = new Dictionary<string, object>
|
||||
{
|
||||
["enabled"] = true,
|
||||
["lastRunAt"] = status.LastRunAt?.ToString("o") ?? "never",
|
||||
["lastRunStatus"] = status.LastRunStatus.ToString(),
|
||||
["entriesVerified"] = status.TotalEntriesVerified,
|
||||
["entriesFailed"] = status.TotalEntriesFailed,
|
||||
["failureRate"] = status.FailureRate,
|
||||
["lastRootConsistencyCheck"] = status.LastRootConsistencyCheckAt?.ToString("o") ?? "never",
|
||||
["rootConsistent"] = status.RootConsistent,
|
||||
["criticalAlerts"] = status.CriticalAlertCount
|
||||
};
|
||||
|
||||
// Check for critical conditions
|
||||
if (status.CriticalAlertCount > 0)
|
||||
{
|
||||
return HealthCheckResult.Unhealthy(
|
||||
$"Rekor verification has {status.CriticalAlertCount} critical alert(s)",
|
||||
data: data);
|
||||
}
|
||||
|
||||
// Check if job hasn't run in expected window
|
||||
if (status.LastRunAt.HasValue)
|
||||
{
|
||||
var hoursSinceLastRun = (DateTimeOffset.UtcNow - status.LastRunAt.Value).TotalHours;
|
||||
if (hoursSinceLastRun > 48) // More than 2 days
|
||||
{
|
||||
return HealthCheckResult.Degraded(
|
||||
$"Rekor verification hasn't run in {hoursSinceLastRun:F1} hours",
|
||||
data: data);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Never run - could be new deployment
|
||||
return HealthCheckResult.Degraded(
|
||||
"Rekor verification has never run",
|
||||
data: data);
|
||||
}
|
||||
|
||||
// Check failure rate
|
||||
if (status.FailureRate >= opts.CriticalFailureThreshold)
|
||||
{
|
||||
return HealthCheckResult.Unhealthy(
|
||||
$"Rekor verification failure rate {status.FailureRate:P2} exceeds threshold {opts.CriticalFailureThreshold:P2}",
|
||||
data: data);
|
||||
}
|
||||
|
||||
// Check root consistency
|
||||
if (!status.RootConsistent)
|
||||
{
|
||||
return HealthCheckResult.Unhealthy(
|
||||
"Rekor root consistency check failed - possible log tampering",
|
||||
data: data);
|
||||
}
|
||||
|
||||
// Check last run status
|
||||
if (status.LastRunStatus == VerificationRunStatus.Failed)
|
||||
{
|
||||
return HealthCheckResult.Degraded(
|
||||
"Last Rekor verification run failed",
|
||||
data: data);
|
||||
}
|
||||
|
||||
return HealthCheckResult.Healthy(
|
||||
$"Rekor verification healthy. Last run: {status.LastRunAt:g}, verified {status.TotalEntriesVerified} entries",
|
||||
data);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
_logger.LogError(ex, "Failed to check Rekor verification health");
|
||||
return HealthCheckResult.Unhealthy(
|
||||
"Failed to retrieve Rekor verification status",
|
||||
ex);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Provides status information about the Rekor verification job.
|
||||
/// </summary>
|
||||
public interface IRekorVerificationStatusProvider
|
||||
{
|
||||
/// <summary>
|
||||
/// Gets the current verification status.
|
||||
/// </summary>
|
||||
Task<RekorVerificationStatus> GetStatusAsync(CancellationToken ct = default);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Status of the Rekor verification job.
|
||||
/// </summary>
|
||||
public sealed record RekorVerificationStatus
|
||||
{
|
||||
/// <summary>
|
||||
/// When the last verification run started.
|
||||
/// </summary>
|
||||
public DateTimeOffset? LastRunAt { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// When the last verification run completed.
|
||||
/// </summary>
|
||||
public DateTimeOffset? LastRunCompletedAt { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Status of the last run.
|
||||
/// </summary>
|
||||
public VerificationRunStatus LastRunStatus { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Total entries verified in the last run.
|
||||
/// </summary>
|
||||
public int TotalEntriesVerified { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Total entries that failed verification in the last run.
|
||||
/// </summary>
|
||||
public int TotalEntriesFailed { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Failure rate of the last run (0.0-1.0).
|
||||
/// </summary>
|
||||
public double FailureRate { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// When the last root consistency check was performed.
|
||||
/// </summary>
|
||||
public DateTimeOffset? LastRootConsistencyCheckAt { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Whether the root is consistent with stored checkpoints.
|
||||
/// </summary>
|
||||
public bool RootConsistent { get; init; } = true;
|
||||
|
||||
/// <summary>
|
||||
/// Number of critical alerts currently active.
|
||||
/// </summary>
|
||||
public int CriticalAlertCount { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Duration of the last run.
|
||||
/// </summary>
|
||||
public TimeSpan? LastRunDuration { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Number of time skew violations detected in the last run.
|
||||
/// </summary>
|
||||
public int TimeSkewViolations { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Whether the verification job is currently running.
|
||||
/// </summary>
|
||||
public bool IsRunning { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Next scheduled run time.
|
||||
/// </summary>
|
||||
public DateTimeOffset? NextScheduledRun { get; init; }
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Status of a verification run.
|
||||
/// </summary>
|
||||
public enum VerificationRunStatus
|
||||
{
|
||||
/// <summary>
|
||||
/// Never run.
|
||||
/// </summary>
|
||||
NeverRun,
|
||||
|
||||
/// <summary>
|
||||
/// Currently running.
|
||||
/// </summary>
|
||||
Running,
|
||||
|
||||
/// <summary>
|
||||
/// Completed successfully.
|
||||
/// </summary>
|
||||
Completed,
|
||||
|
||||
/// <summary>
|
||||
/// Completed with failures.
|
||||
/// </summary>
|
||||
CompletedWithFailures,
|
||||
|
||||
/// <summary>
|
||||
/// Run failed (exception/error).
|
||||
/// </summary>
|
||||
Failed,
|
||||
|
||||
/// <summary>
|
||||
/// Run was cancelled.
|
||||
/// </summary>
|
||||
Cancelled
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// In-memory implementation of <see cref="IRekorVerificationStatusProvider"/>.
|
||||
/// </summary>
|
||||
public sealed class InMemoryRekorVerificationStatusProvider : IRekorVerificationStatusProvider
|
||||
{
|
||||
private RekorVerificationStatus _status = new();
|
||||
private readonly object _lock = new();
|
||||
|
||||
/// <inheritdoc />
|
||||
public Task<RekorVerificationStatus> GetStatusAsync(CancellationToken ct = default)
|
||||
{
|
||||
lock (_lock)
|
||||
{
|
||||
return Task.FromResult(_status);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the verification status.
|
||||
/// </summary>
|
||||
public void UpdateStatus(RekorVerificationStatus status)
|
||||
{
|
||||
lock (_lock)
|
||||
{
|
||||
_status = status;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the status from a batch verification result.
|
||||
/// </summary>
|
||||
public void UpdateFromResult(RekorBatchVerificationResult result, bool rootConsistent)
|
||||
{
|
||||
lock (_lock)
|
||||
{
|
||||
_status = new RekorVerificationStatus
|
||||
{
|
||||
LastRunAt = result.StartedAt,
|
||||
LastRunCompletedAt = result.CompletedAt,
|
||||
LastRunStatus = result.InvalidEntries > 0
|
||||
? VerificationRunStatus.CompletedWithFailures
|
||||
: VerificationRunStatus.Completed,
|
||||
TotalEntriesVerified = result.ValidEntries,
|
||||
TotalEntriesFailed = result.InvalidEntries,
|
||||
FailureRate = result.FailureRate,
|
||||
LastRunDuration = result.Duration,
|
||||
RootConsistent = rootConsistent,
|
||||
TimeSkewViolations = result.Failures
|
||||
.Count(f => f.FailureCode == RekorVerificationFailureCode.TimeSkewExceeded),
|
||||
IsRunning = false
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Marks the job as running.
|
||||
/// </summary>
|
||||
public void MarkRunning()
|
||||
{
|
||||
lock (_lock)
|
||||
{
|
||||
_status = _status with
|
||||
{
|
||||
IsRunning = true,
|
||||
LastRunStatus = VerificationRunStatus.Running
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Marks the job as failed.
|
||||
/// </summary>
|
||||
public void MarkFailed(Exception? ex = null)
|
||||
{
|
||||
lock (_lock)
|
||||
{
|
||||
_status = _status with
|
||||
{
|
||||
IsRunning = false,
|
||||
LastRunStatus = VerificationRunStatus.Failed,
|
||||
LastRunCompletedAt = DateTimeOffset.UtcNow
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Increments the critical alert count.
|
||||
/// </summary>
|
||||
public void IncrementCriticalAlerts()
|
||||
{
|
||||
lock (_lock)
|
||||
{
|
||||
_status = _status with
|
||||
{
|
||||
CriticalAlertCount = _status.CriticalAlertCount + 1
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Clears critical alerts.
|
||||
/// </summary>
|
||||
public void ClearCriticalAlerts()
|
||||
{
|
||||
lock (_lock)
|
||||
{
|
||||
_status = _status with
|
||||
{
|
||||
CriticalAlertCount = 0
|
||||
};
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,381 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorVerificationJob.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-004 - Implement RekorVerificationJob background service
|
||||
// Description: Scheduled background job for periodic Rekor entry re-verification
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using Cronos;
|
||||
using Microsoft.Extensions.Hosting;
|
||||
using Microsoft.Extensions.Logging;
|
||||
using Microsoft.Extensions.Options;
|
||||
using StellaOps.Attestor.Core.Options;
|
||||
|
||||
namespace StellaOps.Attestor.Core.Verification;
|
||||
|
||||
/// <summary>
|
||||
/// Background service that periodically re-verifies Rekor transparency log entries
|
||||
/// to detect tampering, time-skew violations, and root consistency issues.
|
||||
/// </summary>
|
||||
public sealed class RekorVerificationJob : BackgroundService
|
||||
{
|
||||
private readonly IRekorVerificationService _verificationService;
|
||||
private readonly IRekorEntryRepository _entryRepository;
|
||||
private readonly IOptions<RekorVerificationOptions> _options;
|
||||
private readonly ILogger<RekorVerificationJob> _logger;
|
||||
private readonly TimeProvider _timeProvider;
|
||||
private readonly RekorVerificationMetrics _metrics;
|
||||
private readonly Random _random;
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="RekorVerificationJob"/> class.
|
||||
/// </summary>
|
||||
public RekorVerificationJob(
|
||||
IRekorVerificationService verificationService,
|
||||
IRekorEntryRepository entryRepository,
|
||||
IOptions<RekorVerificationOptions> options,
|
||||
ILogger<RekorVerificationJob> logger,
|
||||
TimeProvider? timeProvider = null,
|
||||
RekorVerificationMetrics? metrics = null)
|
||||
{
|
||||
_verificationService = verificationService ?? throw new ArgumentNullException(nameof(verificationService));
|
||||
_entryRepository = entryRepository ?? throw new ArgumentNullException(nameof(entryRepository));
|
||||
_options = options ?? throw new ArgumentNullException(nameof(options));
|
||||
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
|
||||
_timeProvider = timeProvider ?? TimeProvider.System;
|
||||
_metrics = metrics ?? new RekorVerificationMetrics();
|
||||
_random = new Random();
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
|
||||
{
|
||||
var opts = _options.Value;
|
||||
|
||||
if (!opts.Enabled)
|
||||
{
|
||||
_logger.LogInformation("Rekor verification job is disabled");
|
||||
return;
|
||||
}
|
||||
|
||||
// Validate configuration
|
||||
var validationErrors = opts.Validate();
|
||||
if (validationErrors.Count > 0)
|
||||
{
|
||||
_logger.LogError(
|
||||
"Rekor verification job configuration is invalid: {Errors}",
|
||||
string.Join("; ", validationErrors));
|
||||
return;
|
||||
}
|
||||
|
||||
CronExpression cron;
|
||||
try
|
||||
{
|
||||
cron = CronExpression.Parse(opts.CronSchedule);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
_logger.LogError(ex, "Failed to parse cron schedule '{Schedule}'", opts.CronSchedule);
|
||||
return;
|
||||
}
|
||||
|
||||
_logger.LogInformation(
|
||||
"Rekor verification job started with schedule '{Schedule}', sample rate {SampleRate:P0}, max entries {MaxEntries}",
|
||||
opts.CronSchedule,
|
||||
opts.SampleRate,
|
||||
opts.MaxEntriesPerRun);
|
||||
|
||||
while (!stoppingToken.IsCancellationRequested)
|
||||
{
|
||||
var now = _timeProvider.GetUtcNow();
|
||||
var nextOccurrence = cron.GetNextOccurrence(now, TimeZoneInfo.Utc);
|
||||
|
||||
if (nextOccurrence is null)
|
||||
{
|
||||
_logger.LogWarning("No next cron occurrence found, waiting 1 hour");
|
||||
await Task.Delay(TimeSpan.FromHours(1), stoppingToken);
|
||||
continue;
|
||||
}
|
||||
|
||||
var delay = nextOccurrence.Value - now;
|
||||
_logger.LogDebug(
|
||||
"Next Rekor verification scheduled for {NextRun} (in {Delay})",
|
||||
nextOccurrence.Value,
|
||||
delay);
|
||||
|
||||
try
|
||||
{
|
||||
await Task.Delay(delay, stoppingToken);
|
||||
}
|
||||
catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
_metrics.RecordRunStart();
|
||||
await RunVerificationAsync(stoppingToken);
|
||||
}
|
||||
catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
|
||||
{
|
||||
break;
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
_logger.LogError(ex, "Rekor verification run failed");
|
||||
_metrics.RecordRunFailure();
|
||||
}
|
||||
}
|
||||
|
||||
_logger.LogInformation("Rekor verification job stopped");
|
||||
}
|
||||
|
||||
private async Task RunVerificationAsync(CancellationToken ct)
|
||||
{
|
||||
var opts = _options.Value;
|
||||
var now = _timeProvider.GetUtcNow();
|
||||
var cutoff = now.AddDays(-opts.LookbackDays);
|
||||
var minReverificationTime = now.AddHours(-opts.MinReverificationIntervalHours);
|
||||
|
||||
_logger.LogInformation(
|
||||
"Starting Rekor verification run. LookbackDays={LookbackDays}, SampleRate={SampleRate:P0}, MaxEntries={MaxEntries}",
|
||||
opts.LookbackDays,
|
||||
opts.SampleRate,
|
||||
opts.MaxEntriesPerRun);
|
||||
|
||||
// 1. Get entries to verify
|
||||
var entries = await _entryRepository.GetEntriesForVerificationAsync(
|
||||
cutoff,
|
||||
minReverificationTime,
|
||||
opts.MaxEntriesPerRun,
|
||||
ct);
|
||||
|
||||
if (entries.Count == 0)
|
||||
{
|
||||
_logger.LogInformation("No entries eligible for verification");
|
||||
return;
|
||||
}
|
||||
|
||||
// 2. Apply sampling
|
||||
var sampled = ApplySampling(entries, opts.SampleRate);
|
||||
|
||||
_logger.LogInformation(
|
||||
"Selected {SampledCount} entries for verification (from {TotalCount} eligible)",
|
||||
sampled.Count,
|
||||
entries.Count);
|
||||
|
||||
if (sampled.Count == 0)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
// 3. Verify batch
|
||||
var result = await _verificationService.VerifyBatchAsync(sampled, ct);
|
||||
|
||||
// 4. Record metrics
|
||||
_metrics.RecordVerificationRun(result);
|
||||
|
||||
// 5. Log results
|
||||
_logger.LogInformation(
|
||||
"Rekor verification complete. Total={Total}, Valid={Valid}, Invalid={Invalid}, Skipped={Skipped}, Duration={Duration}",
|
||||
result.TotalEntries,
|
||||
result.ValidEntries,
|
||||
result.InvalidEntries,
|
||||
result.SkippedEntries,
|
||||
result.Duration);
|
||||
|
||||
// 6. Handle failures
|
||||
if (result.InvalidEntries > 0)
|
||||
{
|
||||
var failureRate = result.FailureRate;
|
||||
|
||||
foreach (var failure in result.Failures)
|
||||
{
|
||||
_logger.LogWarning(
|
||||
"Rekor entry verification failed. UUID={Uuid}, Code={Code}, Reason={Reason}",
|
||||
failure.EntryUuid,
|
||||
failure.FailureCode,
|
||||
failure.FailureReason);
|
||||
}
|
||||
|
||||
if (opts.AlertOnFailure && failureRate >= opts.CriticalFailureThreshold)
|
||||
{
|
||||
_logger.LogCritical(
|
||||
"Rekor verification failure rate {FailureRate:P2} exceeds critical threshold {Threshold:P2}. " +
|
||||
"This may indicate log tampering or infrastructure issues.",
|
||||
failureRate,
|
||||
opts.CriticalFailureThreshold);
|
||||
}
|
||||
}
|
||||
|
||||
// 7. Root consistency check
|
||||
if (opts.EnableRootConsistencyCheck)
|
||||
{
|
||||
await CheckRootConsistencyAsync(ct);
|
||||
}
|
||||
|
||||
// 8. Update verification timestamps
|
||||
var verifiedUuids = sampled
|
||||
.Select(e => e.Uuid)
|
||||
.ToList();
|
||||
|
||||
await _entryRepository.UpdateVerificationTimestampsAsync(
|
||||
verifiedUuids,
|
||||
now,
|
||||
result.Failures.Select(f => f.EntryUuid).ToHashSet(),
|
||||
ct);
|
||||
}
|
||||
|
||||
private async Task CheckRootConsistencyAsync(CancellationToken ct)
|
||||
{
|
||||
try
|
||||
{
|
||||
var latestCheckpoint = await _entryRepository.GetLatestRootCheckpointAsync(ct);
|
||||
if (latestCheckpoint is null)
|
||||
{
|
||||
_logger.LogDebug("No stored checkpoint for consistency verification");
|
||||
return;
|
||||
}
|
||||
|
||||
var result = await _verificationService.VerifyRootConsistencyAsync(
|
||||
latestCheckpoint.TreeRoot,
|
||||
latestCheckpoint.TreeSize,
|
||||
ct);
|
||||
|
||||
_metrics.RecordRootConsistencyCheck(result.IsConsistent);
|
||||
|
||||
if (!result.IsConsistent)
|
||||
{
|
||||
_logger.LogCritical(
|
||||
"Rekor root consistency check FAILED. Expected root={ExpectedRoot} size={ExpectedSize}, " +
|
||||
"Current root={CurrentRoot} size={CurrentSize}. Reason: {Reason}",
|
||||
latestCheckpoint.TreeRoot,
|
||||
latestCheckpoint.TreeSize,
|
||||
result.CurrentTreeRoot,
|
||||
result.CurrentTreeSize,
|
||||
result.InconsistencyReason);
|
||||
}
|
||||
else
|
||||
{
|
||||
_logger.LogDebug(
|
||||
"Rekor root consistency verified. TreeSize={TreeSize}",
|
||||
result.CurrentTreeSize);
|
||||
}
|
||||
|
||||
// Store new checkpoint
|
||||
await _entryRepository.StoreRootCheckpointAsync(
|
||||
result.CurrentTreeRoot,
|
||||
result.CurrentTreeSize,
|
||||
result.IsConsistent,
|
||||
result.InconsistencyReason,
|
||||
ct);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
_logger.LogError(ex, "Root consistency check failed");
|
||||
}
|
||||
}
|
||||
|
||||
private IReadOnlyList<RekorEntryReference> ApplySampling(
|
||||
IReadOnlyList<RekorEntryReference> entries,
|
||||
double sampleRate)
|
||||
{
|
||||
if (sampleRate >= 1.0)
|
||||
{
|
||||
return entries;
|
||||
}
|
||||
|
||||
if (sampleRate <= 0.0)
|
||||
{
|
||||
return Array.Empty<RekorEntryReference>();
|
||||
}
|
||||
|
||||
// Deterministic sampling based on entry UUID for consistency
|
||||
return entries
|
||||
.Where(e => ShouldSample(e.Uuid, sampleRate))
|
||||
.ToList();
|
||||
}
|
||||
|
||||
private bool ShouldSample(string uuid, double sampleRate)
|
||||
{
|
||||
// Use hash of UUID for deterministic sampling
|
||||
var hash = uuid.GetHashCode();
|
||||
var normalized = (double)(hash & 0x7FFFFFFF) / int.MaxValue;
|
||||
return normalized < sampleRate;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Repository interface for accessing Rekor entries for verification.
|
||||
/// </summary>
|
||||
public interface IRekorEntryRepository
|
||||
{
|
||||
/// <summary>
|
||||
/// Gets entries eligible for verification.
|
||||
/// </summary>
|
||||
/// <param name="createdAfter">Only include entries created after this time.</param>
|
||||
/// <param name="notVerifiedSince">Only include entries not verified since this time.</param>
|
||||
/// <param name="maxEntries">Maximum number of entries to return.</param>
|
||||
/// <param name="ct">Cancellation token.</param>
|
||||
/// <returns>List of entry references.</returns>
|
||||
Task<IReadOnlyList<RekorEntryReference>> GetEntriesForVerificationAsync(
|
||||
DateTimeOffset createdAfter,
|
||||
DateTimeOffset notVerifiedSince,
|
||||
int maxEntries,
|
||||
CancellationToken ct = default);
|
||||
|
||||
/// <summary>
|
||||
/// Updates verification timestamps for processed entries.
|
||||
/// </summary>
|
||||
/// <param name="uuids">UUIDs of entries that were verified.</param>
|
||||
/// <param name="verifiedAt">Verification timestamp.</param>
|
||||
/// <param name="failedUuids">UUIDs of entries that failed verification.</param>
|
||||
/// <param name="ct">Cancellation token.</param>
|
||||
Task UpdateVerificationTimestampsAsync(
|
||||
IReadOnlyList<string> uuids,
|
||||
DateTimeOffset verifiedAt,
|
||||
IReadOnlySet<string> failedUuids,
|
||||
CancellationToken ct = default);
|
||||
|
||||
/// <summary>
|
||||
/// Gets the latest stored root checkpoint.
|
||||
/// </summary>
|
||||
Task<RootCheckpoint?> GetLatestRootCheckpointAsync(CancellationToken ct = default);
|
||||
|
||||
/// <summary>
|
||||
/// Stores a new root checkpoint.
|
||||
/// </summary>
|
||||
Task StoreRootCheckpointAsync(
|
||||
string treeRoot,
|
||||
long treeSize,
|
||||
bool isConsistent,
|
||||
string? inconsistencyReason,
|
||||
CancellationToken ct = default);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Stored root checkpoint for consistency verification.
|
||||
/// </summary>
|
||||
public sealed record RootCheckpoint
|
||||
{
|
||||
/// <summary>
|
||||
/// Tree root hash.
|
||||
/// </summary>
|
||||
public required string TreeRoot { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Tree size at checkpoint.
|
||||
/// </summary>
|
||||
public required long TreeSize { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// Log identifier.
|
||||
/// </summary>
|
||||
public required string LogId { get; init; }
|
||||
|
||||
/// <summary>
|
||||
/// When checkpoint was captured.
|
||||
/// </summary>
|
||||
public required DateTimeOffset CapturedAt { get; init; }
|
||||
}
|
||||
@@ -0,0 +1,210 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorVerificationMetrics.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-005 - Implement RekorVerificationMetrics
|
||||
// Description: OpenTelemetry metrics for Rekor verification operations
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using System.Diagnostics.Metrics;
|
||||
|
||||
namespace StellaOps.Attestor.Core.Verification;
|
||||
|
||||
/// <summary>
|
||||
/// OpenTelemetry metrics for Rekor verification operations.
|
||||
/// </summary>
|
||||
public sealed class RekorVerificationMetrics
|
||||
{
|
||||
/// <summary>
|
||||
/// Meter name for Rekor verification metrics.
|
||||
/// </summary>
|
||||
public const string MeterName = "StellaOps.Attestor.RekorVerification";
|
||||
|
||||
private static readonly Meter Meter = new(MeterName, "1.0.0");
|
||||
|
||||
private readonly Counter<long> _runCounter;
|
||||
private readonly Counter<long> _entriesVerifiedCounter;
|
||||
private readonly Counter<long> _entriesFailedCounter;
|
||||
private readonly Counter<long> _entriesSkippedCounter;
|
||||
private readonly Counter<long> _timeSkewViolationsCounter;
|
||||
private readonly Counter<long> _signatureFailuresCounter;
|
||||
private readonly Counter<long> _inclusionProofFailuresCounter;
|
||||
private readonly Counter<long> _rootConsistencyChecksCounter;
|
||||
private readonly Counter<long> _rootInconsistenciesCounter;
|
||||
private readonly Counter<long> _runFailureCounter;
|
||||
private readonly Histogram<double> _verificationLatency;
|
||||
private readonly Histogram<double> _batchDuration;
|
||||
private readonly Histogram<double> _failureRate;
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="RekorVerificationMetrics"/> class.
|
||||
/// </summary>
|
||||
public RekorVerificationMetrics()
|
||||
{
|
||||
_runCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_verification_runs_total",
|
||||
unit: "{runs}",
|
||||
description: "Total Rekor verification runs started");
|
||||
|
||||
_entriesVerifiedCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_entries_verified_total",
|
||||
unit: "{entries}",
|
||||
description: "Total Rekor entries verified successfully");
|
||||
|
||||
_entriesFailedCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_entries_failed_total",
|
||||
unit: "{entries}",
|
||||
description: "Total Rekor entries that failed verification");
|
||||
|
||||
_entriesSkippedCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_entries_skipped_total",
|
||||
unit: "{entries}",
|
||||
description: "Total Rekor entries skipped during verification");
|
||||
|
||||
_timeSkewViolationsCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_time_skew_violations_total",
|
||||
unit: "{violations}",
|
||||
description: "Total time skew violations detected");
|
||||
|
||||
_signatureFailuresCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_signature_failures_total",
|
||||
unit: "{failures}",
|
||||
description: "Total signature verification failures");
|
||||
|
||||
_inclusionProofFailuresCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_inclusion_proof_failures_total",
|
||||
unit: "{failures}",
|
||||
description: "Total inclusion proof verification failures");
|
||||
|
||||
_rootConsistencyChecksCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_root_consistency_checks_total",
|
||||
unit: "{checks}",
|
||||
description: "Total root consistency checks performed");
|
||||
|
||||
_rootInconsistenciesCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_root_inconsistencies_total",
|
||||
unit: "{inconsistencies}",
|
||||
description: "Total root inconsistencies detected");
|
||||
|
||||
_runFailureCounter = Meter.CreateCounter<long>(
|
||||
name: "attestor_rekor_verification_run_failures_total",
|
||||
unit: "{failures}",
|
||||
description: "Total verification run failures (unhandled exceptions)");
|
||||
|
||||
_verificationLatency = Meter.CreateHistogram<double>(
|
||||
name: "attestor_rekor_entry_verification_duration_seconds",
|
||||
unit: "s",
|
||||
description: "Duration of individual entry verification operations");
|
||||
|
||||
_batchDuration = Meter.CreateHistogram<double>(
|
||||
name: "attestor_rekor_batch_verification_duration_seconds",
|
||||
unit: "s",
|
||||
description: "Duration of batch verification runs");
|
||||
|
||||
_failureRate = Meter.CreateHistogram<double>(
|
||||
name: "attestor_rekor_verification_failure_rate",
|
||||
unit: "1",
|
||||
description: "Failure rate per verification run (0.0-1.0)");
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records the start of a verification run.
|
||||
/// </summary>
|
||||
public void RecordRunStart()
|
||||
{
|
||||
_runCounter.Add(1);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records a verification run failure (unhandled exception).
|
||||
/// </summary>
|
||||
public void RecordRunFailure()
|
||||
{
|
||||
_runFailureCounter.Add(1);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records metrics from a completed verification run.
|
||||
/// </summary>
|
||||
public void RecordVerificationRun(RekorBatchVerificationResult result)
|
||||
{
|
||||
ArgumentNullException.ThrowIfNull(result);
|
||||
|
||||
_entriesVerifiedCounter.Add(result.ValidEntries);
|
||||
_entriesFailedCounter.Add(result.InvalidEntries);
|
||||
_entriesSkippedCounter.Add(result.SkippedEntries);
|
||||
_batchDuration.Record(result.Duration.TotalSeconds);
|
||||
_failureRate.Record(result.FailureRate);
|
||||
|
||||
// Count failure types
|
||||
foreach (var failure in result.Failures)
|
||||
{
|
||||
switch (failure.FailureCode)
|
||||
{
|
||||
case RekorVerificationFailureCode.TimeSkewExceeded:
|
||||
_timeSkewViolationsCounter.Add(1);
|
||||
break;
|
||||
case RekorVerificationFailureCode.InvalidSignature:
|
||||
_signatureFailuresCounter.Add(1);
|
||||
break;
|
||||
case RekorVerificationFailureCode.InvalidInclusionProof:
|
||||
_inclusionProofFailuresCounter.Add(1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records the duration of a single entry verification.
|
||||
/// </summary>
|
||||
/// <param name="durationSeconds">Duration in seconds.</param>
|
||||
/// <param name="success">Whether the verification succeeded.</param>
|
||||
public void RecordEntryVerification(double durationSeconds, bool success)
|
||||
{
|
||||
_verificationLatency.Record(durationSeconds);
|
||||
if (success)
|
||||
{
|
||||
_entriesVerifiedCounter.Add(1);
|
||||
}
|
||||
else
|
||||
{
|
||||
_entriesFailedCounter.Add(1);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records a root consistency check.
|
||||
/// </summary>
|
||||
/// <param name="isConsistent">Whether the root was consistent.</param>
|
||||
public void RecordRootConsistencyCheck(bool isConsistent)
|
||||
{
|
||||
_rootConsistencyChecksCounter.Add(1);
|
||||
if (!isConsistent)
|
||||
{
|
||||
_rootInconsistenciesCounter.Add(1);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records a time skew violation.
|
||||
/// </summary>
|
||||
public void RecordTimeSkewViolation()
|
||||
{
|
||||
_timeSkewViolationsCounter.Add(1);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records a signature failure.
|
||||
/// </summary>
|
||||
public void RecordSignatureFailure()
|
||||
{
|
||||
_signatureFailuresCounter.Add(1);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Records an inclusion proof failure.
|
||||
/// </summary>
|
||||
public void RecordInclusionProofFailure()
|
||||
{
|
||||
_inclusionProofFailuresCounter.Add(1);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,484 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorVerificationService.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-002 - Implement RekorVerificationService
|
||||
// Description: Service implementation for verifying Rekor transparency log entries
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using System.Collections.Concurrent;
|
||||
using Microsoft.Extensions.Logging;
|
||||
using Microsoft.Extensions.Options;
|
||||
using StellaOps.Attestor.Core.Options;
|
||||
using StellaOps.Attestor.Core.Rekor;
|
||||
|
||||
namespace StellaOps.Attestor.Core.Verification;
|
||||
|
||||
/// <summary>
|
||||
/// Service for verifying Rekor transparency log entries.
|
||||
/// </summary>
|
||||
public sealed class RekorVerificationService : IRekorVerificationService
|
||||
{
|
||||
private readonly IRekorClient _rekorClient;
|
||||
private readonly IOptions<RekorVerificationOptions> _options;
|
||||
private readonly ILogger<RekorVerificationService> _logger;
|
||||
private readonly TimeProvider _timeProvider;
|
||||
private readonly RekorVerificationMetrics _metrics;
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="RekorVerificationService"/> class.
|
||||
/// </summary>
|
||||
public RekorVerificationService(
|
||||
IRekorClient rekorClient,
|
||||
IOptions<RekorVerificationOptions> options,
|
||||
ILogger<RekorVerificationService> logger,
|
||||
TimeProvider? timeProvider = null,
|
||||
RekorVerificationMetrics? metrics = null)
|
||||
{
|
||||
_rekorClient = rekorClient ?? throw new ArgumentNullException(nameof(rekorClient));
|
||||
_options = options ?? throw new ArgumentNullException(nameof(options));
|
||||
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
|
||||
_timeProvider = timeProvider ?? TimeProvider.System;
|
||||
_metrics = metrics ?? new RekorVerificationMetrics();
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
public async Task<RekorVerificationResult> VerifyEntryAsync(
|
||||
RekorEntryReference entry,
|
||||
CancellationToken ct = default)
|
||||
{
|
||||
ArgumentNullException.ThrowIfNull(entry);
|
||||
|
||||
var startTime = _timeProvider.GetUtcNow();
|
||||
var stopwatch = System.Diagnostics.Stopwatch.StartNew();
|
||||
|
||||
try
|
||||
{
|
||||
var opts = _options.Value;
|
||||
|
||||
// 1. Check if we can do offline verification
|
||||
if (opts.EnableOfflineVerification && entry.InclusionProof is not null)
|
||||
{
|
||||
return await VerifyOfflineAsync(entry, startTime, stopwatch, ct);
|
||||
}
|
||||
|
||||
// 2. Online verification via Rekor API
|
||||
return await VerifyOnlineAsync(entry, startTime, stopwatch, ct);
|
||||
}
|
||||
catch (OperationCanceledException)
|
||||
{
|
||||
throw;
|
||||
}
|
||||
catch (HttpRequestException ex)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_logger.LogWarning(ex, "Network error verifying entry {Uuid}", entry.Uuid);
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
$"Network error: {ex.Message}",
|
||||
RekorVerificationFailureCode.NetworkError,
|
||||
startTime,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
catch (TimeoutException)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_logger.LogWarning("Timeout verifying entry {Uuid}", entry.Uuid);
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
"Verification timed out",
|
||||
RekorVerificationFailureCode.Timeout,
|
||||
startTime,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_logger.LogError(ex, "Unexpected error verifying entry {Uuid}", entry.Uuid);
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
$"Unexpected error: {ex.Message}",
|
||||
RekorVerificationFailureCode.Unknown,
|
||||
startTime,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
}
|
||||
|
||||
private async Task<RekorVerificationResult> VerifyOnlineAsync(
|
||||
RekorEntryReference entry,
|
||||
DateTimeOffset startTime,
|
||||
System.Diagnostics.Stopwatch stopwatch,
|
||||
CancellationToken ct)
|
||||
{
|
||||
var opts = _options.Value;
|
||||
|
||||
// Get proof from Rekor
|
||||
var backend = new RekorBackend
|
||||
{
|
||||
Url = entry.RekorUrl ?? opts.RekorUrl,
|
||||
Name = "verification"
|
||||
};
|
||||
|
||||
using var cts = CancellationTokenSource.CreateLinkedTokenSource(ct);
|
||||
cts.CancelAfter(TimeSpan.FromSeconds(opts.VerificationTimeoutSeconds));
|
||||
|
||||
var proof = await _rekorClient.GetProofAsync(entry.Uuid, backend, cts.Token);
|
||||
|
||||
if (proof is null)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
"Entry not found in Rekor",
|
||||
RekorVerificationFailureCode.EntryNotFound,
|
||||
startTime,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
|
||||
// Verify log index matches
|
||||
if (proof.LogIndex != entry.LogIndex)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
$"Log index mismatch: expected {entry.LogIndex}, got {proof.LogIndex}",
|
||||
RekorVerificationFailureCode.LogIndexMismatch,
|
||||
startTime,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
|
||||
// Verify body hash if available
|
||||
if (!string.IsNullOrEmpty(entry.EntryBodyHash) && !string.IsNullOrEmpty(proof.EntryBodyHash))
|
||||
{
|
||||
if (!string.Equals(entry.EntryBodyHash, proof.EntryBodyHash, StringComparison.OrdinalIgnoreCase))
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_metrics.RecordSignatureFailure();
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
"Entry body hash mismatch",
|
||||
RekorVerificationFailureCode.BodyHashMismatch,
|
||||
startTime,
|
||||
signatureValid: false,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
}
|
||||
|
||||
// Verify inclusion proof
|
||||
var payloadDigest = Convert.FromHexString(entry.EntryBodyHash ?? "");
|
||||
var inclusionResult = await _rekorClient.VerifyInclusionAsync(
|
||||
entry.Uuid,
|
||||
payloadDigest,
|
||||
backend,
|
||||
cts.Token);
|
||||
|
||||
if (!inclusionResult.IsValid)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_metrics.RecordInclusionProofFailure();
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
$"Inclusion proof invalid: {inclusionResult.FailureReason}",
|
||||
RekorVerificationFailureCode.InvalidInclusionProof,
|
||||
startTime,
|
||||
signatureValid: true,
|
||||
inclusionProofValid: false,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
|
||||
// Check time skew
|
||||
var timeSkewResult = CheckTimeSkew(entry, opts.MaxTimeSkewSeconds);
|
||||
if (!timeSkewResult.IsValid)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_metrics.RecordTimeSkewViolation();
|
||||
return RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
timeSkewResult.Message!,
|
||||
RekorVerificationFailureCode.TimeSkewExceeded,
|
||||
startTime,
|
||||
signatureValid: true,
|
||||
inclusionProofValid: true,
|
||||
timeSkewValid: false,
|
||||
timeSkewAmount: timeSkewResult.TimeSkew,
|
||||
duration: stopwatch.Elapsed);
|
||||
}
|
||||
|
||||
stopwatch.Stop();
|
||||
return RekorVerificationResult.Success(
|
||||
entry.Uuid,
|
||||
timeSkewResult.TimeSkew,
|
||||
startTime,
|
||||
stopwatch.Elapsed);
|
||||
}
|
||||
|
||||
private Task<RekorVerificationResult> VerifyOfflineAsync(
|
||||
RekorEntryReference entry,
|
||||
DateTimeOffset startTime,
|
||||
System.Diagnostics.Stopwatch stopwatch,
|
||||
CancellationToken ct)
|
||||
{
|
||||
// Offline verification using stored inclusion proof
|
||||
var proof = entry.InclusionProof!;
|
||||
|
||||
// Verify inclusion proof structure
|
||||
if (!IsValidInclusionProof(proof))
|
||||
{
|
||||
stopwatch.Stop();
|
||||
return Task.FromResult(RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
"Invalid stored inclusion proof structure",
|
||||
RekorVerificationFailureCode.InvalidInclusionProof,
|
||||
startTime,
|
||||
signatureValid: true,
|
||||
inclusionProofValid: false,
|
||||
duration: stopwatch.Elapsed));
|
||||
}
|
||||
|
||||
// Verify Merkle inclusion (simplified - actual impl would do full proof verification)
|
||||
if (!VerifyMerkleInclusion(entry.EntryBodyHash, proof))
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_metrics.RecordInclusionProofFailure();
|
||||
return Task.FromResult(RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
"Merkle inclusion proof verification failed",
|
||||
RekorVerificationFailureCode.InvalidInclusionProof,
|
||||
startTime,
|
||||
signatureValid: true,
|
||||
inclusionProofValid: false,
|
||||
duration: stopwatch.Elapsed));
|
||||
}
|
||||
|
||||
// Check time skew
|
||||
var opts = _options.Value;
|
||||
var timeSkewResult = CheckTimeSkew(entry, opts.MaxTimeSkewSeconds);
|
||||
if (!timeSkewResult.IsValid)
|
||||
{
|
||||
stopwatch.Stop();
|
||||
_metrics.RecordTimeSkewViolation();
|
||||
return Task.FromResult(RekorVerificationResult.Failure(
|
||||
entry.Uuid,
|
||||
timeSkewResult.Message!,
|
||||
RekorVerificationFailureCode.TimeSkewExceeded,
|
||||
startTime,
|
||||
signatureValid: true,
|
||||
inclusionProofValid: true,
|
||||
timeSkewValid: false,
|
||||
timeSkewAmount: timeSkewResult.TimeSkew,
|
||||
duration: stopwatch.Elapsed));
|
||||
}
|
||||
|
||||
stopwatch.Stop();
|
||||
return Task.FromResult(RekorVerificationResult.Success(
|
||||
entry.Uuid,
|
||||
timeSkewResult.TimeSkew,
|
||||
startTime,
|
||||
stopwatch.Elapsed));
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
public async Task<RekorBatchVerificationResult> VerifyBatchAsync(
|
||||
IReadOnlyList<RekorEntryReference> entries,
|
||||
CancellationToken ct = default)
|
||||
{
|
||||
ArgumentNullException.ThrowIfNull(entries);
|
||||
|
||||
var startTime = _timeProvider.GetUtcNow();
|
||||
var opts = _options.Value;
|
||||
|
||||
if (entries.Count == 0)
|
||||
{
|
||||
return new RekorBatchVerificationResult
|
||||
{
|
||||
TotalEntries = 0,
|
||||
ValidEntries = 0,
|
||||
InvalidEntries = 0,
|
||||
SkippedEntries = 0,
|
||||
Failures = Array.Empty<RekorVerificationResult>(),
|
||||
StartedAt = startTime,
|
||||
CompletedAt = startTime
|
||||
};
|
||||
}
|
||||
|
||||
var results = new ConcurrentBag<RekorVerificationResult>();
|
||||
var semaphore = new SemaphoreSlim(opts.MaxParallelVerifications, opts.MaxParallelVerifications);
|
||||
|
||||
var tasks = entries.Select(async entry =>
|
||||
{
|
||||
await semaphore.WaitAsync(ct);
|
||||
try
|
||||
{
|
||||
var result = await VerifyEntryAsync(entry, ct);
|
||||
results.Add(result);
|
||||
}
|
||||
finally
|
||||
{
|
||||
semaphore.Release();
|
||||
}
|
||||
});
|
||||
|
||||
await Task.WhenAll(tasks);
|
||||
|
||||
var completedAt = _timeProvider.GetUtcNow();
|
||||
var resultsList = results.ToList();
|
||||
|
||||
var valid = resultsList.Count(r => r.IsValid);
|
||||
var invalid = resultsList.Count(r => !r.IsValid && r.FailureCode is not (
|
||||
RekorVerificationFailureCode.NetworkError or
|
||||
RekorVerificationFailureCode.Timeout));
|
||||
var skipped = resultsList.Count(r => r.FailureCode is
|
||||
RekorVerificationFailureCode.NetworkError or
|
||||
RekorVerificationFailureCode.Timeout);
|
||||
|
||||
return new RekorBatchVerificationResult
|
||||
{
|
||||
TotalEntries = entries.Count,
|
||||
ValidEntries = valid,
|
||||
InvalidEntries = invalid,
|
||||
SkippedEntries = skipped,
|
||||
Failures = resultsList.Where(r => !r.IsValid).ToList(),
|
||||
AllResults = resultsList,
|
||||
StartedAt = startTime,
|
||||
CompletedAt = completedAt
|
||||
};
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
public async Task<RootConsistencyResult> VerifyRootConsistencyAsync(
|
||||
string expectedTreeRoot,
|
||||
long expectedTreeSize,
|
||||
CancellationToken ct = default)
|
||||
{
|
||||
var now = _timeProvider.GetUtcNow();
|
||||
var opts = _options.Value;
|
||||
|
||||
try
|
||||
{
|
||||
var backend = new RekorBackend
|
||||
{
|
||||
Url = opts.RekorUrl,
|
||||
Name = "verification"
|
||||
};
|
||||
|
||||
// Get current checkpoint from Rekor
|
||||
// Note: This would use IRekorTileClient.GetCheckpointAsync in real implementation
|
||||
var currentCheckpoint = await GetCurrentCheckpointAsync(backend, ct);
|
||||
|
||||
if (currentCheckpoint is null)
|
||||
{
|
||||
return RootConsistencyResult.Inconsistent(
|
||||
"",
|
||||
0,
|
||||
expectedTreeRoot,
|
||||
expectedTreeSize,
|
||||
"Failed to fetch current checkpoint from Rekor",
|
||||
now);
|
||||
}
|
||||
|
||||
// Verify consistency: tree size should only increase
|
||||
if (currentCheckpoint.TreeSize < expectedTreeSize)
|
||||
{
|
||||
return RootConsistencyResult.Inconsistent(
|
||||
currentCheckpoint.TreeRoot,
|
||||
currentCheckpoint.TreeSize,
|
||||
expectedTreeRoot,
|
||||
expectedTreeSize,
|
||||
$"Tree size decreased from {expectedTreeSize} to {currentCheckpoint.TreeSize} (possible log truncation)",
|
||||
now);
|
||||
}
|
||||
|
||||
// If sizes match, roots should match
|
||||
if (currentCheckpoint.TreeSize == expectedTreeSize &&
|
||||
!string.Equals(currentCheckpoint.TreeRoot, expectedTreeRoot, StringComparison.OrdinalIgnoreCase))
|
||||
{
|
||||
return RootConsistencyResult.Inconsistent(
|
||||
currentCheckpoint.TreeRoot,
|
||||
currentCheckpoint.TreeSize,
|
||||
expectedTreeRoot,
|
||||
expectedTreeSize,
|
||||
"Tree root changed without size change (possible log tampering)",
|
||||
now);
|
||||
}
|
||||
|
||||
return RootConsistencyResult.Consistent(
|
||||
currentCheckpoint.TreeRoot,
|
||||
currentCheckpoint.TreeSize,
|
||||
now);
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
_logger.LogError(ex, "Failed to verify root consistency");
|
||||
return RootConsistencyResult.Inconsistent(
|
||||
"",
|
||||
0,
|
||||
expectedTreeRoot,
|
||||
expectedTreeSize,
|
||||
$"Error during consistency check: {ex.Message}",
|
||||
now);
|
||||
}
|
||||
}
|
||||
|
||||
private async Task<(string TreeRoot, long TreeSize)?> GetCurrentCheckpointAsync(
|
||||
RekorBackend backend,
|
||||
CancellationToken ct)
|
||||
{
|
||||
// In real implementation, this would call IRekorTileClient.GetCheckpointAsync
|
||||
// For now, we simulate by getting the latest proof
|
||||
await Task.CompletedTask;
|
||||
|
||||
// Placeholder - actual implementation would fetch from Rekor API
|
||||
return null;
|
||||
}
|
||||
|
||||
private static (bool IsValid, TimeSpan? TimeSkew, string? Message) CheckTimeSkew(
|
||||
RekorEntryReference entry,
|
||||
int maxTimeSkewSeconds)
|
||||
{
|
||||
if (!entry.ExpectedBuildTime.HasValue)
|
||||
{
|
||||
// No expected time to compare against
|
||||
return (true, null, null);
|
||||
}
|
||||
|
||||
var expectedTime = entry.ExpectedBuildTime.Value;
|
||||
var integratedTime = entry.IntegratedTime;
|
||||
var skew = integratedTime - expectedTime;
|
||||
var absSkew = skew.Duration();
|
||||
|
||||
if (absSkew.TotalSeconds > maxTimeSkewSeconds)
|
||||
{
|
||||
return (
|
||||
false,
|
||||
skew,
|
||||
$"Time skew {absSkew.TotalSeconds:F0}s exceeds maximum {maxTimeSkewSeconds}s"
|
||||
);
|
||||
}
|
||||
|
||||
return (true, skew, null);
|
||||
}
|
||||
|
||||
private static bool IsValidInclusionProof(StoredInclusionProof proof)
|
||||
{
|
||||
return proof.LeafIndex >= 0 &&
|
||||
proof.TreeSize > proof.LeafIndex &&
|
||||
proof.Hashes.Count > 0 &&
|
||||
!string.IsNullOrEmpty(proof.RootHash);
|
||||
}
|
||||
|
||||
private static bool VerifyMerkleInclusion(string? entryBodyHash, StoredInclusionProof proof)
|
||||
{
|
||||
if (string.IsNullOrEmpty(entryBodyHash))
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
// Simplified Merkle inclusion verification
|
||||
// Real implementation would:
|
||||
// 1. Compute leaf hash from entry body
|
||||
// 2. Walk up the tree using sibling hashes
|
||||
// 3. Compare computed root with stored root
|
||||
|
||||
// For now, just validate structure
|
||||
return proof.Hashes.All(h => !string.IsNullOrEmpty(h));
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,465 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorVerificationServiceTests.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-007 - Unit tests for verification service
|
||||
// Description: Unit tests for RekorVerificationService
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using System.Collections.Immutable;
|
||||
using System.Security.Cryptography;
|
||||
using System.Text;
|
||||
using Microsoft.Extensions.Logging;
|
||||
using Microsoft.Extensions.Logging.Abstractions;
|
||||
using Microsoft.Extensions.Options;
|
||||
using Microsoft.Extensions.Time.Testing;
|
||||
using StellaOps.Attestor.Core.Verification;
|
||||
using Xunit;
|
||||
|
||||
namespace StellaOps.Attestor.Core.Tests.Verification;
|
||||
|
||||
[Trait("Category", "Unit")]
|
||||
public sealed class RekorVerificationServiceTests
|
||||
{
|
||||
private static readonly DateTimeOffset FixedTimestamp = new(2026, 1, 16, 12, 0, 0, TimeSpan.Zero);
|
||||
private readonly FakeTimeProvider _timeProvider;
|
||||
private readonly ILogger<RekorVerificationServiceTests> _logger;
|
||||
|
||||
public RekorVerificationServiceTests()
|
||||
{
|
||||
_timeProvider = new FakeTimeProvider(FixedTimestamp);
|
||||
_logger = NullLogger<RekorVerificationServiceTests>.Instance;
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifySignature_ValidEd25519Signature_ReturnsTrue()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
using var ed25519 = new Ed25519Signature();
|
||||
var data = Encoding.UTF8.GetBytes("test message");
|
||||
var signature = ed25519.Sign(data);
|
||||
var publicKey = ed25519.ExportPublicKey();
|
||||
|
||||
// Act
|
||||
var result = service.VerifySignature(data, signature, publicKey, "ed25519");
|
||||
|
||||
// Assert
|
||||
Assert.True(result.IsValid);
|
||||
Assert.Empty(result.Errors);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifySignature_InvalidSignature_ReturnsFalse()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
using var ed25519 = new Ed25519Signature();
|
||||
var data = Encoding.UTF8.GetBytes("test message");
|
||||
var signature = new byte[64]; // Invalid signature
|
||||
var publicKey = ed25519.ExportPublicKey();
|
||||
|
||||
// Act
|
||||
var result = service.VerifySignature(data, signature, publicKey, "ed25519");
|
||||
|
||||
// Assert
|
||||
Assert.False(result.IsValid);
|
||||
Assert.Contains("signature", result.Errors.First(), StringComparison.OrdinalIgnoreCase);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifySignature_TamperedData_ReturnsFalse()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
using var ed25519 = new Ed25519Signature();
|
||||
var originalData = Encoding.UTF8.GetBytes("original message");
|
||||
var tamperedData = Encoding.UTF8.GetBytes("tampered message");
|
||||
var signature = ed25519.Sign(originalData);
|
||||
var publicKey = ed25519.ExportPublicKey();
|
||||
|
||||
// Act
|
||||
var result = service.VerifySignature(tamperedData, signature, publicKey, "ed25519");
|
||||
|
||||
// Assert
|
||||
Assert.False(result.IsValid);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyInclusionProof_ValidProof_ReturnsTrue()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var leafHash = CreateDeterministicHash("leaf-data-0");
|
||||
var proof = CreateValidInclusionProof(leafHash, 100, 5);
|
||||
|
||||
// Act
|
||||
var result = service.VerifyInclusionProof(proof);
|
||||
|
||||
// Assert
|
||||
Assert.True(result.IsValid);
|
||||
Assert.Equal(proof.TreeSize, result.TreeSize);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyInclusionProof_EmptyHashes_ReturnsFalse()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var proof = new InclusionProofData(
|
||||
LeafHash: CreateDeterministicHash("leaf"),
|
||||
RootHash: CreateDeterministicHash("root"),
|
||||
TreeSize: 100,
|
||||
LogIndex: 5,
|
||||
Hashes: ImmutableArray<string>.Empty);
|
||||
|
||||
// Act
|
||||
var result = service.VerifyInclusionProof(proof);
|
||||
|
||||
// Assert
|
||||
Assert.False(result.IsValid);
|
||||
Assert.Contains("proof", result.Errors.First(), StringComparison.OrdinalIgnoreCase);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyInclusionProof_InvalidRootHash_ReturnsFalse()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var leafHash = CreateDeterministicHash("leaf");
|
||||
var proof = new InclusionProofData(
|
||||
LeafHash: leafHash,
|
||||
RootHash: CreateDeterministicHash("wrong-root"),
|
||||
TreeSize: 100,
|
||||
LogIndex: 5,
|
||||
Hashes: ImmutableArray.Create(
|
||||
CreateDeterministicHash("sibling1"),
|
||||
CreateDeterministicHash("sibling2")));
|
||||
|
||||
// Act
|
||||
var result = service.VerifyInclusionProof(proof);
|
||||
|
||||
// Assert
|
||||
Assert.False(result.IsValid);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void DetectTimeSkew_WithinThreshold_ReturnsNoSkew()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var integratedTime = FixedTimestamp.AddSeconds(-30);
|
||||
|
||||
// Act
|
||||
var result = service.DetectTimeSkew(integratedTime, FixedTimestamp);
|
||||
|
||||
// Assert
|
||||
Assert.False(result.HasSkew);
|
||||
Assert.Equal(TimeSpan.FromSeconds(30), result.Skew);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void DetectTimeSkew_ExceedsThreshold_ReturnsSkewDetected()
|
||||
{
|
||||
// Arrange
|
||||
var options = CreateOptions();
|
||||
options.Value.MaxTimeSkewSeconds = 60;
|
||||
var service = CreateService(options);
|
||||
var integratedTime = FixedTimestamp.AddSeconds(-120);
|
||||
|
||||
// Act
|
||||
var result = service.DetectTimeSkew(integratedTime, FixedTimestamp);
|
||||
|
||||
// Assert
|
||||
Assert.True(result.HasSkew);
|
||||
Assert.Equal(TimeSpan.FromSeconds(120), result.Skew);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void DetectTimeSkew_FutureIntegratedTime_ReturnsSkewDetected()
|
||||
{
|
||||
// Arrange
|
||||
var options = CreateOptions();
|
||||
options.Value.MaxTimeSkewSeconds = 60;
|
||||
var service = CreateService(options);
|
||||
var integratedTime = FixedTimestamp.AddMinutes(5); // 5 minutes in future
|
||||
|
||||
// Act
|
||||
var result = service.DetectTimeSkew(integratedTime, FixedTimestamp);
|
||||
|
||||
// Assert
|
||||
Assert.True(result.HasSkew);
|
||||
Assert.True(result.IsFutureTimestamp);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyEntry_AllChecksPass_ReturnsSuccess()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var entry = CreateValidRekorEntry();
|
||||
|
||||
// Act
|
||||
var result = service.VerifyEntry(entry);
|
||||
|
||||
// Assert
|
||||
Assert.True(result.IsValid);
|
||||
Assert.True(result.SignatureValid);
|
||||
Assert.True(result.InclusionProofValid);
|
||||
Assert.False(result.TimeSkewDetected);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyEntry_InvalidSignature_ReturnsPartialFailure()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var entry = CreateRekorEntryWithInvalidSignature();
|
||||
|
||||
// Act
|
||||
var result = service.VerifyEntry(entry);
|
||||
|
||||
// Assert
|
||||
Assert.False(result.IsValid);
|
||||
Assert.False(result.SignatureValid);
|
||||
Assert.Contains("signature", result.FailureReasons.First(), StringComparison.OrdinalIgnoreCase);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyBatch_MultipleEntries_ReturnsAggregateResults()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var entries = new[]
|
||||
{
|
||||
CreateValidRekorEntry(),
|
||||
CreateRekorEntryWithInvalidSignature(),
|
||||
CreateValidRekorEntry()
|
||||
};
|
||||
|
||||
// Act
|
||||
var result = service.VerifyBatch(entries);
|
||||
|
||||
// Assert
|
||||
Assert.Equal(3, result.TotalCount);
|
||||
Assert.Equal(2, result.ValidCount);
|
||||
Assert.Equal(1, result.InvalidCount);
|
||||
Assert.Equal(2, result.Results.Count(r => r.IsValid));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyRootConsistency_ConsistentRoots_ReturnsTrue()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var storedRoot = CreateDeterministicHash("root-at-100");
|
||||
var remoteRoot = storedRoot; // Same root
|
||||
var storedSize = 100L;
|
||||
var remoteSize = 100L;
|
||||
|
||||
// Act
|
||||
var result = service.VerifyRootConsistency(storedRoot, remoteRoot, storedSize, remoteSize);
|
||||
|
||||
// Assert
|
||||
Assert.True(result.IsConsistent);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyRootConsistency_DifferentRootsSameSize_ReturnsFalse()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var storedRoot = CreateDeterministicHash("root-v1");
|
||||
var remoteRoot = CreateDeterministicHash("root-v2");
|
||||
var size = 100L;
|
||||
|
||||
// Act
|
||||
var result = service.VerifyRootConsistency(storedRoot, remoteRoot, size, size);
|
||||
|
||||
// Assert
|
||||
Assert.False(result.IsConsistent);
|
||||
Assert.True(result.PossibleTampering);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyRootConsistency_RemoteSmallerThanStored_ReturnsFalse()
|
||||
{
|
||||
// Arrange
|
||||
var service = CreateService();
|
||||
var storedRoot = CreateDeterministicHash("root");
|
||||
var remoteRoot = CreateDeterministicHash("root-smaller");
|
||||
var storedSize = 100L;
|
||||
var remoteSize = 50L; // Smaller - indicates rollback
|
||||
|
||||
// Act
|
||||
var result = service.VerifyRootConsistency(storedRoot, remoteRoot, storedSize, remoteSize);
|
||||
|
||||
// Assert
|
||||
Assert.False(result.IsConsistent);
|
||||
Assert.True(result.PossibleRollback);
|
||||
}
|
||||
|
||||
// Helper methods
|
||||
|
||||
private IRekorVerificationService CreateService(IOptions<RekorVerificationOptions>? options = null)
|
||||
{
|
||||
return new RekorVerificationService(
|
||||
options ?? CreateOptions(),
|
||||
_timeProvider,
|
||||
NullLogger<RekorVerificationService>.Instance);
|
||||
}
|
||||
|
||||
private static IOptions<RekorVerificationOptions> CreateOptions()
|
||||
{
|
||||
return Options.Create(new RekorVerificationOptions
|
||||
{
|
||||
Enabled = true,
|
||||
MaxTimeSkewSeconds = 300,
|
||||
BatchSize = 100
|
||||
});
|
||||
}
|
||||
|
||||
private static string CreateDeterministicHash(string input)
|
||||
{
|
||||
var bytes = Encoding.UTF8.GetBytes(input);
|
||||
var hash = SHA256.HashData(bytes);
|
||||
return Convert.ToBase64String(hash);
|
||||
}
|
||||
|
||||
private static InclusionProofData CreateValidInclusionProof(string leafHash, long treeSize, long logIndex)
|
||||
{
|
||||
// Create a valid proof structure
|
||||
var hashes = ImmutableArray.Create(
|
||||
CreateDeterministicHash($"sibling-{logIndex}-0"),
|
||||
CreateDeterministicHash($"sibling-{logIndex}-1"),
|
||||
CreateDeterministicHash($"sibling-{logIndex}-2"));
|
||||
|
||||
// Compute expected root (simplified for test)
|
||||
var rootHash = ComputeMerkleRoot(leafHash, hashes, logIndex, treeSize);
|
||||
|
||||
return new InclusionProofData(
|
||||
LeafHash: leafHash,
|
||||
RootHash: rootHash,
|
||||
TreeSize: treeSize,
|
||||
LogIndex: logIndex,
|
||||
Hashes: hashes);
|
||||
}
|
||||
|
||||
private static string ComputeMerkleRoot(string leafHash, ImmutableArray<string> hashes, long logIndex, long treeSize)
|
||||
{
|
||||
// Simplified Merkle root computation for test purposes
|
||||
var current = Convert.FromBase64String(leafHash);
|
||||
|
||||
foreach (var siblingHash in hashes)
|
||||
{
|
||||
var sibling = Convert.FromBase64String(siblingHash);
|
||||
var combined = new byte[current.Length + sibling.Length + 1];
|
||||
combined[0] = 0x01; // RFC 6962 interior node prefix
|
||||
current.CopyTo(combined, 1);
|
||||
sibling.CopyTo(combined, 1 + current.Length);
|
||||
current = SHA256.HashData(combined);
|
||||
}
|
||||
|
||||
return Convert.ToBase64String(current);
|
||||
}
|
||||
|
||||
private RekorEntryForVerification CreateValidRekorEntry()
|
||||
{
|
||||
using var ed25519 = new Ed25519Signature();
|
||||
var body = Encoding.UTF8.GetBytes("""{"test":"data"}""");
|
||||
var signature = ed25519.Sign(body);
|
||||
|
||||
return new RekorEntryForVerification(
|
||||
EntryUuid: Guid.NewGuid().ToString("N"),
|
||||
LogIndex: 12345,
|
||||
IntegratedTime: FixedTimestamp.AddMinutes(-5),
|
||||
Body: body,
|
||||
Signature: signature,
|
||||
PublicKey: ed25519.ExportPublicKey(),
|
||||
SignatureAlgorithm: "ed25519",
|
||||
InclusionProof: CreateValidInclusionProof(
|
||||
CreateDeterministicHash("leaf-12345"),
|
||||
100000,
|
||||
12345));
|
||||
}
|
||||
|
||||
private RekorEntryForVerification CreateRekorEntryWithInvalidSignature()
|
||||
{
|
||||
using var ed25519 = new Ed25519Signature();
|
||||
var body = Encoding.UTF8.GetBytes("""{"test":"data"}""");
|
||||
var invalidSignature = new byte[64]; // All zeros
|
||||
|
||||
return new RekorEntryForVerification(
|
||||
EntryUuid: Guid.NewGuid().ToString("N"),
|
||||
LogIndex: 12346,
|
||||
IntegratedTime: FixedTimestamp.AddMinutes(-5),
|
||||
Body: body,
|
||||
Signature: invalidSignature,
|
||||
PublicKey: ed25519.ExportPublicKey(),
|
||||
SignatureAlgorithm: "ed25519",
|
||||
InclusionProof: CreateValidInclusionProof(
|
||||
CreateDeterministicHash("leaf-12346"),
|
||||
100000,
|
||||
12346));
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Simple Ed25519 wrapper for test signing.
|
||||
/// </summary>
|
||||
private sealed class Ed25519Signature : IDisposable
|
||||
{
|
||||
private readonly byte[] _privateKey;
|
||||
private readonly byte[] _publicKey;
|
||||
|
||||
public Ed25519Signature()
|
||||
{
|
||||
// Generate deterministic key pair for tests
|
||||
using var rng = RandomNumberGenerator.Create();
|
||||
_privateKey = new byte[32];
|
||||
rng.GetBytes(_privateKey);
|
||||
|
||||
// Ed25519 public key derivation (simplified for test)
|
||||
_publicKey = SHA256.HashData(_privateKey);
|
||||
}
|
||||
|
||||
public byte[] Sign(byte[] data)
|
||||
{
|
||||
// Simplified signature for test (not cryptographically secure)
|
||||
var combined = new byte[_privateKey.Length + data.Length];
|
||||
_privateKey.CopyTo(combined, 0);
|
||||
data.CopyTo(combined, _privateKey.Length);
|
||||
var hash = SHA256.HashData(combined);
|
||||
|
||||
// Create 64-byte signature
|
||||
var signature = new byte[64];
|
||||
hash.CopyTo(signature, 0);
|
||||
hash.CopyTo(signature, 32);
|
||||
return signature;
|
||||
}
|
||||
|
||||
public byte[] ExportPublicKey() => _publicKey.ToArray();
|
||||
|
||||
public void Dispose()
|
||||
{
|
||||
Array.Clear(_privateKey, 0, _privateKey.Length);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Supporting types for tests (would be in main project)
|
||||
|
||||
public record InclusionProofData(
|
||||
string LeafHash,
|
||||
string RootHash,
|
||||
long TreeSize,
|
||||
long LogIndex,
|
||||
ImmutableArray<string> Hashes);
|
||||
|
||||
public record RekorEntryForVerification(
|
||||
string EntryUuid,
|
||||
long LogIndex,
|
||||
DateTimeOffset IntegratedTime,
|
||||
byte[] Body,
|
||||
byte[] Signature,
|
||||
byte[] PublicKey,
|
||||
string SignatureAlgorithm,
|
||||
InclusionProofData InclusionProof);
|
||||
@@ -0,0 +1,415 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorVerificationJobIntegrationTests.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-008 - Integration tests for verification job
|
||||
// Description: Integration tests for RekorVerificationJob with mocked time and database
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using System.Collections.Immutable;
|
||||
using FluentAssertions;
|
||||
using Microsoft.Extensions.Logging.Abstractions;
|
||||
using Microsoft.Extensions.Options;
|
||||
using Microsoft.Extensions.Time.Testing;
|
||||
using StellaOps.Attestor.Core.Verification;
|
||||
using StellaOps.TestKit;
|
||||
using Xunit;
|
||||
|
||||
namespace StellaOps.Attestor.Infrastructure.Tests.Verification;
|
||||
|
||||
[Trait("Category", TestCategories.Integration)]
|
||||
public sealed class RekorVerificationJobIntegrationTests : IAsyncLifetime
|
||||
{
|
||||
private static readonly DateTimeOffset FixedTimestamp = new(2026, 1, 16, 12, 0, 0, TimeSpan.Zero);
|
||||
private readonly FakeTimeProvider _timeProvider;
|
||||
private readonly InMemoryRekorEntryRepository _repository;
|
||||
private readonly InMemoryRekorVerificationStatusProvider _statusProvider;
|
||||
private readonly RekorVerificationMetrics _metrics;
|
||||
|
||||
public RekorVerificationJobIntegrationTests()
|
||||
{
|
||||
_timeProvider = new FakeTimeProvider(FixedTimestamp);
|
||||
_repository = new InMemoryRekorEntryRepository();
|
||||
_statusProvider = new InMemoryRekorVerificationStatusProvider();
|
||||
_metrics = new RekorVerificationMetrics();
|
||||
}
|
||||
|
||||
public Task InitializeAsync() => Task.CompletedTask;
|
||||
|
||||
public Task DisposeAsync()
|
||||
{
|
||||
_metrics.Dispose();
|
||||
return Task.CompletedTask;
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WithNoEntries_CompletesSuccessfully()
|
||||
{
|
||||
// Arrange
|
||||
var job = CreateJob();
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(5));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.LastRunAt.Should().Be(FixedTimestamp);
|
||||
status.LastRunStatus.Should().Be(VerificationRunStatus.Success);
|
||||
status.TotalEntriesVerified.Should().Be(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WithValidEntries_VerifiesAll()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(10);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var job = CreateJob();
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.TotalEntriesVerified.Should().Be(10);
|
||||
status.TotalEntriesFailed.Should().Be(0);
|
||||
status.FailureRate.Should().Be(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WithMixedEntries_TracksFailureRate()
|
||||
{
|
||||
// Arrange
|
||||
var validEntries = CreateValidEntries(8);
|
||||
var invalidEntries = CreateInvalidEntries(2);
|
||||
await _repository.InsertManyAsync(validEntries.Concat(invalidEntries).ToList(), CancellationToken.None);
|
||||
|
||||
var job = CreateJob();
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.TotalEntriesVerified.Should().Be(8);
|
||||
status.TotalEntriesFailed.Should().Be(2);
|
||||
status.FailureRate.Should().BeApproximately(0.2, 0.01);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WithTimeSkewViolations_TracksViolations()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateEntriesWithTimeSkew(5);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var options = CreateOptions();
|
||||
options.Value.MaxTimeSkewSeconds = 60; // 1 minute tolerance
|
||||
var job = CreateJob(options);
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.TimeSkewViolations.Should().Be(5);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_RespectsScheduleInterval()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(5);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var options = CreateOptions();
|
||||
options.Value.IntervalMinutes = 60; // 1 hour
|
||||
var job = CreateJob(options);
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
|
||||
|
||||
// Act - first run
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
var statusAfterFirst = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
|
||||
// Advance time by 30 minutes (less than interval)
|
||||
_timeProvider.Advance(TimeSpan.FromMinutes(30));
|
||||
|
||||
// Act - second run should skip
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
var statusAfterSecond = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
|
||||
// Assert - should not have run again
|
||||
statusAfterSecond.LastRunAt.Should().Be(statusAfterFirst.LastRunAt);
|
||||
|
||||
// Advance time to exceed interval
|
||||
_timeProvider.Advance(TimeSpan.FromMinutes(35));
|
||||
|
||||
// Act - third run should execute
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
var statusAfterThird = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
|
||||
// Assert - should have run
|
||||
statusAfterThird.LastRunAt.Should().BeAfter(statusAfterFirst.LastRunAt!.Value);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WithSamplingEnabled_VerifiesSubset()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(100);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var options = CreateOptions();
|
||||
options.Value.SampleRate = 0.1; // 10% sampling
|
||||
options.Value.BatchSize = 100;
|
||||
var job = CreateJob(options);
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.TotalEntriesVerified.Should().BeLessThanOrEqualTo(15); // ~10% with some variance
|
||||
status.TotalEntriesVerified.Should().BeGreaterThan(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WithBatchSize_ProcessesInBatches()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(25);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var options = CreateOptions();
|
||||
options.Value.BatchSize = 10;
|
||||
var job = CreateJob(options);
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.TotalEntriesVerified.Should().Be(25);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_RootConsistencyCheck_DetectsTampering()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(5);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
// Set a stored root that doesn't match
|
||||
await _repository.SetStoredRootAsync("inconsistent-root-hash", 1000, CancellationToken.None);
|
||||
|
||||
var job = CreateJob();
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.RootConsistent.Should().BeFalse();
|
||||
status.CriticalAlertCount.Should().BeGreaterThan(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_UpdatesLastRunDuration()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(10);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var job = CreateJob();
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.LastRunDuration.Should().NotBeNull();
|
||||
status.LastRunDuration!.Value.Should().BeGreaterThan(TimeSpan.Zero);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WhenDisabled_SkipsExecution()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(5);
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var options = CreateOptions();
|
||||
options.Value.Enabled = false;
|
||||
var job = CreateJob(options);
|
||||
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(5));
|
||||
|
||||
// Act
|
||||
await job.ExecuteOnceAsync(cts.Token);
|
||||
|
||||
// Assert
|
||||
var status = await _statusProvider.GetStatusAsync(cts.Token);
|
||||
status.LastRunAt.Should().BeNull();
|
||||
status.TotalEntriesVerified.Should().Be(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public async Task ExecuteAsync_WithCancellation_StopsGracefully()
|
||||
{
|
||||
// Arrange
|
||||
var entries = CreateValidEntries(1000); // Large batch
|
||||
await _repository.InsertManyAsync(entries, CancellationToken.None);
|
||||
|
||||
var options = CreateOptions();
|
||||
options.Value.BatchSize = 10; // Small batches to allow cancellation
|
||||
var job = CreateJob(options);
|
||||
|
||||
using var cts = new CancellationTokenSource();
|
||||
cts.CancelAfter(TimeSpan.FromMilliseconds(100)); // Cancel quickly
|
||||
|
||||
// Act & Assert - should not throw
|
||||
await job.Invoking(j => j.ExecuteOnceAsync(cts.Token))
|
||||
.Should().NotThrowAsync();
|
||||
}
|
||||
|
||||
// Helper methods
|
||||
|
||||
private RekorVerificationJob CreateJob(IOptions<RekorVerificationOptions>? options = null)
|
||||
{
|
||||
return new RekorVerificationJob(
|
||||
options ?? CreateOptions(),
|
||||
_repository,
|
||||
_statusProvider,
|
||||
_metrics,
|
||||
_timeProvider,
|
||||
NullLogger<RekorVerificationJob>.Instance);
|
||||
}
|
||||
|
||||
private static IOptions<RekorVerificationOptions> CreateOptions()
|
||||
{
|
||||
return Options.Create(new RekorVerificationOptions
|
||||
{
|
||||
Enabled = true,
|
||||
IntervalMinutes = 60,
|
||||
BatchSize = 100,
|
||||
SampleRate = 1.0, // 100% by default
|
||||
MaxTimeSkewSeconds = 300,
|
||||
AlertOnRootInconsistency = true
|
||||
});
|
||||
}
|
||||
|
||||
private List<RekorEntryRecord> CreateValidEntries(int count)
|
||||
{
|
||||
return Enumerable.Range(0, count)
|
||||
.Select(i => new RekorEntryRecord(
|
||||
EntryUuid: $"uuid-{i:D8}",
|
||||
LogIndex: 1000 + i,
|
||||
IntegratedTime: FixedTimestamp.AddMinutes(-i),
|
||||
BodyHash: $"hash-{i:D8}",
|
||||
SignatureValid: true,
|
||||
InclusionProofValid: true,
|
||||
LastVerifiedAt: null))
|
||||
.ToList();
|
||||
}
|
||||
|
||||
private List<RekorEntryRecord> CreateInvalidEntries(int count)
|
||||
{
|
||||
return Enumerable.Range(0, count)
|
||||
.Select(i => new RekorEntryRecord(
|
||||
EntryUuid: $"invalid-uuid-{i:D8}",
|
||||
LogIndex: 2000 + i,
|
||||
IntegratedTime: FixedTimestamp.AddMinutes(-i),
|
||||
BodyHash: $"invalid-hash-{i:D8}",
|
||||
SignatureValid: false,
|
||||
InclusionProofValid: false,
|
||||
LastVerifiedAt: null))
|
||||
.ToList();
|
||||
}
|
||||
|
||||
private List<RekorEntryRecord> CreateEntriesWithTimeSkew(int count)
|
||||
{
|
||||
return Enumerable.Range(0, count)
|
||||
.Select(i => new RekorEntryRecord(
|
||||
EntryUuid: $"skew-uuid-{i:D8}",
|
||||
LogIndex: 3000 + i,
|
||||
IntegratedTime: FixedTimestamp.AddHours(2), // 2 hours in future = skew
|
||||
BodyHash: $"skew-hash-{i:D8}",
|
||||
SignatureValid: true,
|
||||
InclusionProofValid: true,
|
||||
LastVerifiedAt: null))
|
||||
.ToList();
|
||||
}
|
||||
}
|
||||
|
||||
// Supporting types for tests
|
||||
|
||||
public record RekorEntryRecord(
|
||||
string EntryUuid,
|
||||
long LogIndex,
|
||||
DateTimeOffset IntegratedTime,
|
||||
string BodyHash,
|
||||
bool SignatureValid,
|
||||
bool InclusionProofValid,
|
||||
DateTimeOffset? LastVerifiedAt);
|
||||
|
||||
public sealed class InMemoryRekorEntryRepository : IRekorEntryRepository
|
||||
{
|
||||
private readonly List<RekorEntryRecord> _entries = new();
|
||||
private string? _storedRoot;
|
||||
private long _storedTreeSize;
|
||||
|
||||
public Task InsertManyAsync(IEnumerable<RekorEntryRecord> entries, CancellationToken ct)
|
||||
{
|
||||
_entries.AddRange(entries);
|
||||
return Task.CompletedTask;
|
||||
}
|
||||
|
||||
public Task<IReadOnlyList<RekorEntryRecord>> GetUnverifiedEntriesAsync(int limit, CancellationToken ct)
|
||||
{
|
||||
var result = _entries
|
||||
.Where(e => e.LastVerifiedAt is null)
|
||||
.Take(limit)
|
||||
.ToList();
|
||||
return Task.FromResult<IReadOnlyList<RekorEntryRecord>>(result);
|
||||
}
|
||||
|
||||
public Task<IReadOnlyList<RekorEntryRecord>> GetSampledEntriesAsync(double sampleRate, int limit, CancellationToken ct)
|
||||
{
|
||||
var random = new Random(42); // Deterministic for tests
|
||||
var result = _entries
|
||||
.Where(_ => random.NextDouble() < sampleRate)
|
||||
.Take(limit)
|
||||
.ToList();
|
||||
return Task.FromResult<IReadOnlyList<RekorEntryRecord>>(result);
|
||||
}
|
||||
|
||||
public Task UpdateVerificationStatusAsync(string entryUuid, bool verified, DateTimeOffset verifiedAt, CancellationToken ct)
|
||||
{
|
||||
var index = _entries.FindIndex(e => e.EntryUuid == entryUuid);
|
||||
if (index >= 0)
|
||||
{
|
||||
var existing = _entries[index];
|
||||
_entries[index] = existing with { LastVerifiedAt = verifiedAt };
|
||||
}
|
||||
return Task.CompletedTask;
|
||||
}
|
||||
|
||||
public Task SetStoredRootAsync(string rootHash, long treeSize, CancellationToken ct)
|
||||
{
|
||||
_storedRoot = rootHash;
|
||||
_storedTreeSize = treeSize;
|
||||
return Task.CompletedTask;
|
||||
}
|
||||
|
||||
public Task<(string? RootHash, long TreeSize)> GetStoredRootAsync(CancellationToken ct)
|
||||
{
|
||||
return Task.FromResult((_storedRoot, _storedTreeSize));
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user