sprints work.

src/__Libraries/StellaOps.Cryptography.CertificateStatus.Abstractions/ICertificateStatusProvider.cs

@@ -0,0 +1,50 @@
+// -----------------------------------------------------------------------------
+// ICertificateStatusProvider.cs
+// Sprint: SPRINT_20260119_008 Certificate Status Provider
+// Task: CSP-001 - Core Abstractions
+// Description: Main interface for certificate revocation checking.
+// -----------------------------------------------------------------------------
+
+using System.Security.Cryptography.X509Certificates;
+
+namespace StellaOps.Cryptography.CertificateStatus.Abstractions;
+
+/// <summary>
+/// Provides certificate revocation status checking via OCSP, CRL, or stapled responses.
+/// </summary>
+public interface ICertificateStatusProvider
+{
+    /// <summary>
+    /// Checks the revocation status of a certificate.
+    /// </summary>
+    /// <param name="request">The status check request.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The certificate status result.</returns>
+    Task<CertificateStatusResult> CheckStatusAsync(
+        CertificateStatusRequest request,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Checks the revocation status of a certificate chain.
+    /// </summary>
+    /// <param name="chain">The certificate chain to check.</param>
+    /// <param name="options">Status check options.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>Status results for each certificate in the chain.</returns>
+    Task<ChainStatusResult> CheckChainStatusAsync(
+        X509Chain chain,
+        CertificateStatusOptions? options = null,
+        CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Fetches revocation data for stapling (OCSP response and/or CRL).
+    /// </summary>
+    /// <param name="certificate">The certificate to get revocation data for.</param>
+    /// <param name="issuer">The issuer certificate.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>Stapled revocation data for bundling.</returns>
+    Task<StapledRevocationData?> FetchRevocationDataAsync(
+        X509Certificate2 certificate,
+        X509Certificate2 issuer,
+        CancellationToken cancellationToken = default);
+}