Binary Diff Examples

This directory contains examples demonstrating the binary diff attestation feature.

Prerequisites

StellaOps CLI (stella) installed
Access to a container registry
Docker or containerd runtime (for image pulling)

Examples

Basic Comparison

basic-comparison.md - Simple binary diff between two image versions

DSSE Attestation

dsse-attestation.md - Generating and verifying DSSE-signed attestations

Policy Integration

policy-integration.md - Using binary diff evidence in policy rules

CI/CD Integration

ci-cd-integration.md - GitHub Actions and GitLab CI examples

Sample Outputs

The sample-outputs/ directory contains:

diff-table.txt - Sample table-formatted output
diff.json - Sample JSON output
attestation.dsse.json - Sample DSSE envelope

Quick Start

# Compare two image versions
stella scan diff --base myapp:1.0.0 --target myapp:1.0.1

# Generate attestation
stella scan diff --base myapp:1.0.0 --target myapp:1.0.1 \
  --mode=elf --emit-dsse=./attestations \
  --signing-key=./keys/binarydiff.pem

# Attach attestation to the image
stella attest attach \
  --image docker://myapp:1.0.1 \
  --attestation ./attestations/linux-amd64-binarydiff.dsse.json

# Verify attestation (example with cosign)
cosign verify-attestation \
  --type stellaops.binarydiff.v1 \
  --key ./keys/binarydiff.pub \
  docker://myapp:1.0.1

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