feat: AES-128 support for FairPlay Streaming compatibility#33
Merged
arkavo-com merged 4 commits intomainfrom Dec 27, 2025
Merged
feat: AES-128 support for FairPlay Streaming compatibility#33arkavo-com merged 4 commits intomainfrom
arkavo-com merged 4 commits intomainfrom
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Add configurable key size support to TDF Archive encryption: - New TDFKeySize enum (.bits128, .bits256) with algorithm string - TDFEncryptionConfiguration now accepts keySize parameter - TDFManifestBuilder supports algorithm parameter - CLI supports TDF_KEY_SIZE environment variable - 12 new tests for AES-128 encryption/decryption Default remains AES-256-GCM for backward compatibility. NanoTDF unchanged (requires AES-256 per spec). Closes #32 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Include KAS public key in collection header for KeyStore lookup - Update KeyStore.derivePayloadSymmetricKey to use v12 salt - Update tests to match v12 salt derivation 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Adds configurable AES key size support to TDF Archive encryption, enabling AES-128-GCM for FairPlay Streaming DRM compatibility.
Closes #32
Changes
TDFKeySizeenum (.bits128,.bits256) with algorithm string propertyTDFEncryptionConfigurationnow accepts optionalkeySizeparameter (defaults to.bits256)TDFManifestBuildersupports configurable algorithm parameterTDF_KEY_SIZEenvironment variable (128 or 256)API Usage
Backward Compatibility
Test plan
testTDFKeySizeEnum- enum properties correcttestAES128KeyGeneration- generates 16-byte keystestAES128EncryptionDecryption- round-trip workstestAES128EndToEndEncryption- full TDF workflowtestAES128RSAKeyWrapping- key wrapping/unwrappingtestManifestBuilderWithAES128- manifest algorithm string🤖 Generated with Claude Code