Review rev_135b6ef6fa214414aee8950653d76e6d

{
  "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/arm/p384/bignum_sub_p384.S",
      "hash": "blake3:eac58f2d204210d1f73b0f02a4114455038c39e98f0e7e894f56100a842254ba",
      "summary": "Reviewed the ARM64 assembly routine in `bignum_sub_p384.S`, which performs constant-time subtraction modulo the P-384 prime using carry/borrow handling and masked correction. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/p384/bignum_tomont_p384.S",
      "hash": "blake3:475709875b920625575e245ba0c9a1b6ccd54d8b6fb7f9e31f138f5160d17777",
      "summary": "This target file is ARM64 assembly for `bignum_tomont_p384`, implementing Montgomery conversion for the P-384 field and simple loads/stores/arithmetic only. I reviewed it for install-time hooks, hidden subprocesses, network or credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found none.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/p384/bignum_triple_p384.S",
      "hash": "blake3:0120b9339c5aff9fcc07fbe102db66cf3d07b74f9ae1492d9c646ee1e2061997",
      "summary": "Reviewed the ARM assembly implementation of `bignum_triple_p384`, which performs modular tripling and reduction for the P-384 field. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}