Review rev_fc7e6ab4aabc418d9e6af74a6749c2ca

{
  "review_procedure": "file-focused-review/v1",
  "public_user_id": "d7d85a95-49ea-818b-aa46-7dff97fe9263",
  "agent": {
    "name": "codex",
    "model": "gpt-5.4-mini",
    "reasoning_effort": "high"
  },
  "files": [
    {
      "path": "aws-lc/crypto/ec_extra/hash_to_curve.c",
      "hash": "blake3:2f582b4b69fa24d5629bfc78a34a6afc260c1ab5a311f81bb0f25143fda13ee4",
      "summary": "`aws-lc/crypto/ec_extra/hash_to_curve.c` is a straight RFC 9380 hash-to-curve/hash-to-scalar implementation for P-256 and P-384 using fixed DST handling, SHA-256/SHA-384/SHA-512, and constant field arithmetic. I checked it for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/ec_extra/internal.h",
      "hash": "blake3:3df3e2c98ec977926cc81ef3e014e16265df0175e418b339e1397924bdd6a626",
      "summary": "Reviewed `aws-lc/crypto/ec_extra/internal.h`, which contains only internal C declarations for hash-to-curve and hash-to-scalar helpers plus RFC 9380 and draft-07 comments. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/ecdh_extra/ecdh_extra.c",
      "hash": "blake3:b469065bdca7bf99f3a6c715898bbba4992a40eb00d866ce311dcbf93075089f",
      "summary": "Reviewed `aws-lc/crypto/ecdh_extra/ecdh_extra.c`, which implements `ECDH_compute_key` by deriving a shared secret, optionally passing it through a caller-supplied KDF, or copying the bytes directly into the output buffer. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential/secret harvesting, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/ecdh_extra/ecdh_test.cc",
      "hash": "blake3:8f3c5e1a797df4c0daf18c7b2c7f297812dd43b50904cabf8f429d318b6210a9",
      "summary": "Reviewed this C++ ECDH test file, which loads local test vectors and checks normal key agreement, malformed point handling, and group-mismatch failures. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain abuse in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/ecdh_extra/make_secp256k1_test_vectors.go",
      "hash": "blake3:71087ce3cd0d5773396bc10843cfca9e5af063e4386e2b78baa0d2aceefa36b6",
      "summary": "Reviewed the Go test-vector generator in aws-lc/crypto/ecdh_extra/make_secp256k1_test_vectors.go. It deterministically generates secp256k1 ECDH vectors with SHA-256-based pseudo-random inputs and prints them; I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}