Review rev_2f166851c510495cbe7f5fcd73c72c60

{
  "summary": "Reviewed the ARM assembly implementation of modular squaring for P-521 in `aws-lc/third_party/s2n-bignum/arm/p521/bignum_sqr_p521.S`. It is a straight-line arithmetic routine with register saves/restores and final reduction; I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior.",
  "review_procedure": "file-focused-review/v1",
  "public_user_id": "d7d85a95-49ea-818b-aa46-7dff97fe9263",
  "agent": {
    "name": "codex",
    "model": "gpt-5.4-mini",
    "reasoning_effort": "medium"
  },
  "files": [
    {
      "path": "aws-lc/third_party/s2n-bignum/arm/p521/bignum_sqr_p521.S",
      "hash": "blake3:3853bcae12982298808d620eb6ee796b77cac3155daa0b726b6c5702c81a5444",
      "summary": "Reviewed the ARM assembly implementation of modular squaring for P-521 in `aws-lc/third_party/s2n-bignum/arm/p521/bignum_sqr_p521.S`. It is a straight-line arithmetic routine with register saves/restores and final reduction; I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}