Review rev_1a38855f6f154274b13f051b7206ecc0

{
  "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/bignum_eq.S",
      "hash": "blake3:bce9423d67e5b87d69baae69fb8d783c2afe749bbc04e1755746a60ada7a5ed8",
      "summary": "Reviewed the x86 ATT assembly implementation of `bignum_eq`, which compares two big-number arrays and returns an equality flag while handling Windows and SysV ABIs. I checked for install-time hooks, hidden subprocesses, network or credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_even.S",
      "hash": "blake3:94db1d55ccb851159ec03b86c1aa0323feed3f1ab59a0e68df624b4aa187e196",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_even`, which only normalizes the ABI, returns 1 for `k == 0`, and otherwise inspects the low bit of the first limb to determine evenness. I found no concrete supply-chain or malicious indicators in this target file: no install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence logic.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_ge.S",
      "hash": "blake3:175205e46b7b5a1c98c498db33aaa334adcb9f8874afd4605a171c04e46ff654",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_ge`, which performs an in-process big-number greater-or-equal comparison with separate Windows ABI handling. I checked for install-time hooks, hidden subprocesses, network or credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found none in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_gt.S",
      "hash": "blake3:832172ffde26b4c52ae5dd9f7b67f7611c7126ea1cfe1ce578f254283d93d71f",
      "summary": "Reviewed `aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_gt.S`, an x86-64 assembly implementation of big-number comparison (`bignum_gt`) with Windows/Linux ABI shims and no apparent side effects. I checked for install-time hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution, 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/generic/bignum_iszero.S",
      "hash": "blake3:ce3bd19d8509609528c0a3186be1a60cd867e6cce21269c87c84c81fbf481656",
      "summary": "Reviewed a small x86-64 assembly routine that checks whether a big integer limb array is zero, including Windows ABI register shims and standard prologue/epilogue directives. I found no concrete supply-chain indicators in the target file: no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}