Review rev_a76d166300b24f5da2811d6581a3a4c7

{
  "summary": "Reviewed the target x86-64 assembly implementation of `bignum_invsqrt_p25519_alt`, which performs modular inverse-square-root arithmetic for Curve25519 and only uses local register/stack operations plus internal helper calls. I checked for install-time hooks, network or credential access, dynamic code loading, obfuscation/deobfuscation, persistence, and other supply-chain indicators; none were present in this file.",
  "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/s2n-bignum-imported/x86_att/curve25519/bignum_invsqrt_p25519_alt.S",
      "hash": "blake3:91ca58f3381145736afdb575e99bd3598d91d6ef6a3a02187ef814d0447d701f",
      "summary": "Reviewed the target x86-64 assembly implementation of `bignum_invsqrt_p25519_alt`, which performs modular inverse-square-root arithmetic for Curve25519 and only uses local register/stack operations plus internal helper calls. I checked for install-time hooks, network or credential access, dynamic code loading, obfuscation/deobfuscation, persistence, and other supply-chain indicators; none were present in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}