Review rev_3ecc8387fbd542d7a5f2cad13fda3747

{
  "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/generic/word_negmodinv.S",
      "hash": "blake3:87e334849e54ad70186d64196d8ac8a1654b2bc8107b365d40531c0cf20a2b8d",
      "summary": "This target is a standalone x86-64 assembly implementation of `word_negmodinv` that performs local arithmetic refinement to compute a negated modular inverse for an odd 64-bit input. I checked it for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators and found none.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/word_popcount.S",
      "hash": "blake3:500891150cf64d4744d6839a02ff0171ce82f7fd6163a71ac5377683b89f86fa",
      "summary": "Reviewed `word_popcount.S`, a small x86-64 assembly routine that computes a 64-bit population count with Windows ABI shims and a commented gcc-generated bit-twiddling implementation. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/word_recip.S",
      "hash": "blake3:173dd866b3f3afb757283d67b79092c55a663f52257ea57185e00c4bdbe438a0",
      "summary": "Reviewed this x86-64 assembly routine for computing a single-word reciprocal in the s2n-bignum library. The file contains only straight-line arithmetic and ABI-handling code; I found no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/mldsa/mldsa_intt.S",
      "hash": "blake3:8e94ab2ea85042c581cbc917c7906e81b82381a2b9f588d306b8350d170a3d78",
      "summary": "This file is a deterministic x86-64 AVX2 assembly implementation of the ML-DSA inverse NTT, with constant-time Montgomery arithmetic, butterfly stages, and ABI save/restore logic. I checked it for install-time hooks, subprocess execution, 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/third_party/s2n-bignum/s2n-bignum-imported/x86_att/mldsa/mldsa_ntt.S",
      "hash": "blake3:5f3d33c735b05f150718f80836923d91714579c35ebc1774e609348fbc4a6b77",
      "summary": "This file is x86-64 AVX2 assembly for the ML-DSA forward NTT, performing in-place polynomial transforms with Montgomery reduction and ABI-specific register handling. I checked it for install-time hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}