security: RFC 7638 JWK Thumbprint for TEE nonce key binding#321
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Replace SHA-256(raw_pub_key_bytes) with the RFC 7638 JWK Thumbprint (SHA-256 of sorted JSON OKP members) in the TEE nonce fingerprint and verifier. Both sites now use _jwk_thumbprint_sha256(x_b64url) which produces the standard JWK identifier per RFC 7638 §3. Signed-off-by: Imran Siddique <imran.siddique@opaque.co>
…ance Introduce evidence_class field on AuditEntry (hash-only | tls-pinned). The proxy sets tls-pinned when the catalog entry carries a real TLS fingerprint (not the dev placeholder) and the upstream URL is HTTPS. Verifiers can use this field to distinguish responses received over a verified TLS channel from those received without cert pinning. Documents both classes and the non-repudiation limitation in LIMITATIONS.md. Signed-off-by: Imran Siddique <imran.siddique@opaque.co>
validate base64 decoding without storing the result. Signed-off-by: Imran Siddique <imran.siddique@opaque.co>
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Switches CRYPTO-001 TEE key binding from SHA-256(raw_pub_key_bytes) to the RFC 7638 JWK Thumbprint (SHA-256 of JSON-serialized sorted OKP members). Both startup.py (nonce construction) and verify.py (verification) now use _jwk_thumbprint_sha256(x_b64url) which produces the standard JWK identifier per RFC 7638 §3. Updates test helper and one inline test accordingly. All 23 verify tests pass.