Review rev_b221590ddfe0421f943da63161e2415d

{
  "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/x86_att/p384/bignum_littleendian_6.S",
      "hash": "blake3:75598a09aadf87d7168be12a186ded7201233f9c5cc6fe99f9da09e99f0d0fc7",
      "summary": "This target file is a small x86-64 assembly routine that copies six 64-bit limbs between buffers for `bignum_littleendian_6`/`bignum_fromlebytes_6`/`bignum_tolebytes_6`. I checked for install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_mod_n384.S",
      "hash": "blake3:e28149aba1da2261a67ca29f84d92ae381ca4e7bc04fe17667829e968feefae7",
      "summary": "The target file is a hand-written x86-64 assembly routine for reducing a big integer modulo the P-384 group order. I checked it for install-time execution, hidden subprocesses, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_mod_n384_6.S",
      "hash": "blake3:576a8a34a037481e75e282c870fd9fd74657ce3a2cfc9f0f16a39cc3b4ac68fb",
      "summary": "Reviewed this x86-64 assembly routine for P-384 modular reduction. It contains only fixed-constant arithmetic and ABI handling for the exported function, with no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior present in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_mod_n384_alt.S",
      "hash": "blake3:0158749f4a2e6f65443adbe63b4f0169cf9a7e223a7569e2072e7c0948b51294",
      "summary": "Reviewed this x86-64 assembly source for P-384 modular reduction. It contains straight-line arithmetic and ABI save/restore code only; I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain payload behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_mod_p384.S",
      "hash": "blake3:30893055b7547285f5fe9794c661e67377ff21fa058c6cb995903118ba2a763d",
      "summary": "Reviewed an x86-64 assembly implementation of modular reduction for P-384 (`bignum_mod_p384`) and checked it for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence changes. The file contains only deterministic arithmetic, register save/restore, and ABI handling, with no concrete malicious or supply-chain indicators found.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}