test(drm): gold-standard CENC conformance vs Bento4 (independent reference)#609
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test(drm): gold-standard CENC conformance vs Bento4 (independent reference)#609RicherTunes wants to merge 1 commit into
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…rence) Cross-validates CencSegmentDecryptor against Bento4 (mp4encrypt/mp4decrypt) — the battle-tested reference implementation — not just our own NIST-vector + synthetic-box fixtures. The embedded fixture is a REAL cenc-encrypted DASH media segment (moof+mdat, 10 samples) produced by 'mp4encrypt --method MPEG-CENC' with a known key/KID, and the expected plaintext is the exact output of 'mp4decrypt' on it. Decrypting with CencSegmentDecryptor yields byte-identical output, proving our walker + senc/trun/tfhd parsers + AES-CTR core agree with an independent tool. Fixture is base64-embedded so CI runs without Bento4 installed. Closes the 'real-segment plaintext diff' gap flagged in the conformance-validation strategy (Bento4 generates the sample; no .wvd needed). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Cross-validates
CencSegmentDecryptoragainst Bento4 (mp4encrypt/mp4decrypt) — the battle-tested reference implementation — not just our own NIST-vector + synthetic-box fixtures.The embedded fixture is a real
cenc-encrypted DASH media segment (moof+mdat, 10 samples) produced bymp4encrypt --method MPEG-CENCwith a known key/KID; the expected plaintext is the exact output ofmp4decrypton the same segment. Decrypting it withCencSegmentDecryptoryields byte-identical output — proving our walker + senc/trun/tfhd parsers + AES-CTR core agree with an independent tool..wvdor live content is needed.🤖 Generated with Claude Code