Review rev_d42d1d8f091d4cbeaa29bbd8cae8d5b2

{
  "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_amontsqr.S",
      "hash": "blake3:633ffafaa3fadfe9f7316ad322dce13ee0f6e9e69d55afa69e55a5e7fa457bf2",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_amontsqr`, including ABI setup, register saves, big-integer multiply/reduction loops, and the final conditional subtraction. I found no concrete indicators of install-time execution, network or secret exfiltration, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_bitfield.S",
      "hash": "blake3:51b174af866dd54d68e605b0c3525ac20860ff65934c308f943ce80fd1da6aa1",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_bitfield`, which performs constant-time bitfield extraction from an in-memory bignum and returns the masked result. I found no concrete indicators of install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain payload behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_bitsize.S",
      "hash": "blake3:c35055e596871ea707260e9421ee3ceb687b97ac1f9c9e69902df9fc5e6256a7",
      "summary": "Reviewed the x86-64 assembly routine for `bignum_bitsize`, which scans a caller-provided limb array and computes its bit length with local arithmetic and conditional moves. I found no concrete indicators of install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_cdiv.S",
      "hash": "blake3:a9feaf0c090432d03e65624098e5181cc5f6e262e0accb40f16e79407ea1c7a3",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_cdiv`, which is a pure arithmetic routine for word-by-word division and remainder calculation. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_cdiv_exact.S",
      "hash": "blake3:dd6a7e0406aabd928e49355755c6478249d34db5e72b40429a20eb9a9304ba34",
      "summary": "Reviewed the x86-64 assembly routine implementing `bignum_cdiv_exact`, including its ABI setup and arithmetic loop. I checked for install-time hooks, 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"
    }
  ]
}