Review rev_9e8ff68cdcc441dcbde5f82eb018144b

{
  "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_ntt.S",
      "hash": "blake3:a4126529fab24359612eef4d28929ad2994f30e6d90951180705d6129c4acb13",
      "summary": "Reviewed the x86-64 assembly implementation of `mlkem_ntt_x86`, which performs an in-place ML-KEM number-theoretic transform using only register arithmetic and fixed memory reads/writes against its input and constant tables. I checked this target file for install hooks, subprocess execution, network or credential access, dynamic code loading, obfuscation, and persistence behavior, 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/mlkem/mlkem_reduce.S",
      "hash": "blake3:864478768804fbab10788a08aca4b78faf5529e8bfd5a43888a6c07405987b84",
      "summary": "Reviewed an x86-64 AVX2 assembly routine that performs in-place canonical reduction of 256 ML-KEM polynomial coefficients modulo 3329. I checked the file for install-time hooks, subprocess or shell execution, network or exfiltration behavior, credential/secret access, dynamic code loading, obfuscation, persistence, and other hidden payload indicators, 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/mlkem/mlkem_rej_uniform_VARIABLE_TIME.S",
      "hash": "blake3:bcbcac0a6129b1cff4c336bd968ec718a92b8b53f5b827f9dd115cd762bc5787",
      "summary": "Reviewed this x86-64 assembly implementation of ML-KEM uniform rejection sampling, which only manipulates the input buffer, filters 12-bit values against the 3329 threshold, and copies accepted values into the output array. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}