Review rev_27ad3ebddea34a47a795628156b9bb0f

{
  "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/third_party/s2n-bignum/s2n-bignum-imported/x86_att/mlkem/mlkem_tobytes.S",
      "hash": "blake3:cb97ca5257bbc296a3e2a7436925c38f5944b75c4dd00d338e00771755c44c47",
      "summary": "Reviewed this x86-64 assembly routine, which packs 256 ML-KEM 16-bit coefficients into a 384-byte output buffer using vector instructions. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other hidden payload behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/mlkem/mlkem_tomont.S",
      "hash": "blake3:5ed6ee084b1bf458ab49500a79e95161eb3d2dc0fad04c965bcf8840fa78e223",
      "summary": "Reviewed this x86-64 assembly routine for ML-KEM Montgomery conversion of a 256-element int16 array. I checked for install-time hooks, subprocess execution, network or credential access, dynamic code loading, obfuscation, persistence, and other payload-delivery behavior, and found no concrete malicious or supply-chain indicators in the file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/mlkem/mlkem_unpack.S",
      "hash": "blake3:6f00507f0924cd50d951aea12d564a392b65bd519064add4bd5abe12999952cd",
      "summary": "Reviewed the x86-64 assembly routine that reorders 256 signed 16-bit ML-KEM coefficients in place using AVX2 shuffles and stores. I checked for install hooks, subprocess launches, network/exfiltration, credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p256/bignum_add_p256.S",
      "hash": "blake3:db4f2088e1f866088a5596f2fe3f0260a59726aaef09f838b5b4ab69139d9660",
      "summary": "Reviewed `bignum_add_p256.S`, an x86-64 assembly routine that performs constant-time modular addition for the P-256 field and writes the result to the output buffer. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p256/bignum_bigendian_4.S",
      "hash": "blake3:b2fb75767003b5ba84d09b208e92f4497cad3ea1dfe5f64b2615b9c35b95e446",
      "summary": "Reviewed this x86-64 assembly implementation of `bignum_bigendian_4`, which just byte-swaps four 64-bit words and writes them back in reverse order for the `bignum_bigendian_4`/`frombebytes_4`/`tobebytes_4` symbols. I found no concrete indicators of install-time execution, network or exfiltration logic, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}