Review rev_28bb35250a1d4aa2b24a30458fc1b2a2

{
  "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/fastmul/bignum_ksqr_16_32.S",
      "hash": "blake3:adc1b1a52d8bbac13945d6db12f350261ccf7409ab100c719f117f8d98c3a1cb",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_ksqr_16_32`, which performs a fixed large-integer squaring routine using BMI2/ADX instructions and register-based carry handling. I found no concrete indicators of install-time execution, network or credential access, dynamic code loading, obfuscation, persistence, or other supply-chain payload behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}