Review rev_2949059445074ecb8c1528f2fdefee97

{
  "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/sm2/bignum_add_sm2.S",
      "hash": "blake3:4ec288ed57062057c666f41a9263b0b18f17240c1b4b8fa60d3b8cb2d1169cc0",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_add_sm2`, which performs a fixed SM2 modular addition with Windows ABI shims and no apparent install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior. I found no concrete malicious or supply-chain indicators in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_cmul_sm2.S",
      "hash": "blake3:2352831daf0f009df74b2f199158f962569f8305b9c4d2aba54044682ad18534",
      "summary": "Reviewed this x86-64 assembly routine for SM2 modular single-word multiplication. It only performs in-register arithmetic and conditional reduction, with no install hooks, subprocess launches, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior present in the file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_cmul_sm2_alt.S",
      "hash": "blake3:7b2492dffdc533c726ade888b72b9dd84e1075c7a61cc6106dbf08ecaba9dc89",
      "summary": "Reviewed `bignum_cmul_sm2_alt.S`, an x86-64 assembly routine that multiplies a 256-bit SM2 field element by a single word and reduces it modulo `p_sm2`, with ABI-specific register shuffling and conditional correction logic. I checked for install-time hooks, secret access, network/exfiltration, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found no concrete malicious behavior in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_deamont_sm2.S",
      "hash": "blake3:23a0e4bd85ec6845a5cfb8eaf921b57dc11ad63b9119298d3d435000b7f1847f",
      "summary": "Reviewed this x86-64 assembly routine for SM2 almost-Montgomery reduction. It only performs fixed arithmetic, ABI setup, and conditional carry handling; I found no install hooks, subprocesses, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_demont_sm2.S",
      "hash": "blake3:2877ec117a916bb9676721cf324f591273ceb7232c427feed51bb6033d4109b7",
      "summary": "This file is a straight-line x86-64 assembly implementation of SM2 Montgomery reduction that loads four 64-bit limbs, performs four reduction steps, and writes the result back. I found no install hooks, network or exfiltration behavior, secret access, dynamic code loading, obfuscation, or persistence in the target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}