Review rev_4eb4e0d1545f4edeb0f9a2cde7927116

{
  "summary": "Reviewed the target assembly implementation of `bignum_sqrt_p25519`, which performs constant-time modular arithmetic and local stack/register bookkeeping for Curve25519 square-root extraction. I found no concrete malicious or supply-chain indicators in this file: no install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation/packing, persistence, or unrelated system probing.",
  "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_sqrt_p25519.S",
      "hash": "blake3:448ce7d7e3c1754f3d074a25a5adaa726fda3441ba251ddd3e3f4545682a8596",
      "summary": "Reviewed the target assembly implementation of `bignum_sqrt_p25519`, which performs constant-time modular arithmetic and local stack/register bookkeeping for Curve25519 square-root extraction. I found no concrete malicious or supply-chain indicators in this file: no install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation/packing, persistence, or unrelated system probing.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}