Review rev_c0d7b3bd6dab416aac33ddfff740e0ae

{
  "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/curve25519/edwards25519_epadd.S",
      "hash": "blake3:7ac3161b5468794bc9404c911e4a47096e0879b5efde0b92a7b892f0f8b62061",
      "summary": "Reviewed this ARM assembly implementation of `edwards25519_epadd`, which performs constant-time field arithmetic for Edwards25519 point addition using local stack/register temporaries and immediate constants. I checked for install-time hooks, subprocesses, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and hidden payload unpacking, 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/curve25519/edwards25519_epadd_alt.S",
      "hash": "blake3:1fa0f7a6ab0d7491266f1688221ffa98a1ee01b47e3fdb06b2a7a82355d27b0b",
      "summary": "Reviewed the ARM assembly implementation of `edwards25519_epadd_alt`, which performs extended-projective Edwards25519 point addition using fixed field-arithmetic macros and stack temporaries. I checked for install-time execution, network or exfiltration behavior, credential or secret access, dynamic code loading, obfuscation, persistence tampering, and other hidden control-flow, and found no concrete supply-chain or malicious indicators in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}