Review rev_9cc5f79cb01b4256975604a2f2e04c45

{
  "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/secp256k1/bignum_montmul_p256k1_alt.S",
      "hash": "blake3:9814170f70ba26dd4dc02c2e6560a001a6cf35c83919d1f8b0af923b1b7bd281",
      "summary": "Reviewed this x86-64 AT&T assembly file implementing secp256k1 Montgomery multiplication and reduction. I checked for install-time execution, 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/secp256k1/bignum_montsqr_p256k1.S",
      "hash": "blake3:d179e4508a447c8170ea3d326d040125ce7d9ee65a29f7e21d3a2582610ec6b7",
      "summary": "Reviewed the target assembly routine `bignum_montsqr_p256k1.S`, which implements a constant-time Montgomery square for secp256k1 using x86-64 arithmetic and ABI save/restore code. I checked for install-time execution, hidden subprocesses, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence hooks, 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/secp256k1/bignum_montsqr_p256k1_alt.S",
      "hash": "blake3:59c5060e8d11ddf892b219adcc5a35dab68ee4a237aa76374389c23ab82141a7",
      "summary": "Reviewed `bignum_montsqr_p256k1_alt.S`, a deterministic x86-64 assembly implementation of Montgomery squaring for secp256k1 with ABI setup, register save/restore, and constant-time arithmetic. I checked for install hooks, subprocesses, network or exfiltration paths, credential or environment 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/secp256k1/bignum_mul_p256k1.S",
      "hash": "blake3:db28cf7cfa7d1418f841fd1144c36ff1c0aa447388fd33e9358a3e161b541622",
      "summary": "Reviewed `aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/secp256k1/bignum_mul_p256k1.S`, an x86-64 assembly routine that computes secp256k1 modular multiplication with standard register saves, carry chains, and final reduction. I found no concrete malicious or supply-chain indicators in the file: no install-time hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/secp256k1/bignum_mul_p256k1_alt.S",
      "hash": "blake3:ef251e6458b08d5c688301a6787b679f4a68c3b0037a6b48a4da7abc2c35436e",
      "summary": "Reviewed this x86-64 assembly implementation of modular multiplication for secp256k1 in `aws-lc`; it is a straight arithmetic routine with ABI setup, register save/restore, and constant-time style reduction logic. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise in the target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}