Review rev_305fd4d0ac7b45839986db689a573008

{
  "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/p384/bignum_montmul_p384.S",
      "hash": "blake3:6c6641b973c57a2c6c04d1520fca73fe4f1770d332a56ed922f8fd3d323820d2",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_montmul_p384`, which performs Montgomery multiplication and final conditional subtraction for P-384 using only local register arithmetic. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_montmul_p384_alt.S",
      "hash": "blake3:5250d28a5f41a430ce3724c03eabbffec01f8450c8c0beb7ebaa3214cb12ed12",
      "summary": "This file is a hand-written x86-64 assembly implementation of P-384 Montgomery multiplication with ABI handling and register save/restore. I checked it for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, and other supply-chain indicators, and found no concrete malicious signs.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_montsqr_p384.S",
      "hash": "blake3:e015c4cb33b18e18247097fb637bdc8e901fdc25213da534e63d3b0cccae8885",
      "summary": "This file is hand-written x86-64 assembly for Montgomery squaring over P-384, consisting of arithmetic, register shuffling, ABI save/restore, and result stores only. I checked for install-time hooks, subprocess execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found none.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}