Review rev_594dfdcd40ea4d3caa8bf81186a4d609

{
  "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_montsqr.S",
      "hash": "blake3:b57034976a9bd8203224140209d9dc641cac0a98a28f958f0836fd50df7d7125",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_montsqr`, a Montgomery squaring routine in AWS-LC’s bignum code. I checked for install-time hooks, subprocess spawning, network or exfiltration, 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_mul.S",
      "hash": "blake3:9c0918f690b92b469b1d597acfd1b8ca1fa2925e006325d3e04cd8f0fc45d5af",
      "summary": "Reviewed `bignum_mul.S`, an x86-64 assembly implementation of big-number multiplication that only performs register setup, arithmetic loops, and memory stores for the destination buffer. I found no concrete indicators of install-time execution, network or exfiltration behavior, secret access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_muladd10.S",
      "hash": "blake3:3634ab0c65abfa8cc94956c73de50381801cff46aaf5c406af0f14989488b5cf",
      "summary": "Reviewed the x86-64 assembly routine `bignum_muladd10`, which implements an in-place bignum multiply-by-10-and-add-carry loop with standard ABI handling. I found no concrete signs 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_mux.S",
      "hash": "blake3:11c2caab763f8f1324e679b5e53ffcf63470fd797d279d8d0a0c84acd80e4b44",
      "summary": "Reviewed `bignum_mux.S`, which is a small x86-64 assembly routine that conditionally copies one big-number array to another based on a nonzero predicate, with ABI shims for Windows and ELF stack metadata. I checked for install-time hooks, subprocess execution, network or exfiltration behavior, credential/secret access, dynamic code loading, obfuscation, and persistence, 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_mux16.S",
      "hash": "blake3:a57c03f76a4d8cdcf2c345b2d17f4bb56b2b8fdb9bced38625d7450deee9d389",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_mux16`, which copies one of 16 fixed-size bignum entries into the output buffer using register-only table selection logic. I checked for install-time hooks, subprocess execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}