Review rev_ca58efa4abbe411598469021d1f812d1

{
  "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/fastmul/bignum_mul_8_16.S",
      "hash": "blake3:890ac3229240af493f089fea428a9663fc024752cfb5b09177f14cba97856024",
      "summary": "Reviewed the ARM assembly implementation of `bignum_mul_8_16`, which performs a fixed big-number multiplication and writes the 16-limb result back to the caller-provided buffer. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other hidden payload execution, 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/arm/fastmul/bignum_mul_8_16_alt.S",
      "hash": "blake3:bfe59b460b23c70d37f2fa31c6481e42b87a0e01b28d5121ec21252a00d6f445",
      "summary": "Reviewed an ARM assembly implementation of `bignum_mul_8_16_alt`, which multiplies two 8-limb 64-bit integers into a 16-limb result using register arithmetic and stores the output directly. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/fastmul/bignum_sqr_4_8.S",
      "hash": "blake3:877d1d54b1cdacc5dd6aefa2f275ccd6ba1302e73e47d4e88e6061a420c7ec57",
      "summary": "Reviewed this ARM assembly implementation of `bignum_sqr_4_8`, which performs a constant-time 4-limb big-number square and stores the 8-limb result. I checked for install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found no concrete malicious behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}