Review rev_16be575ba9b9435b8569d6946d03175a

{
  "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_pepadd.S",
      "hash": "blake3:69ae97c559f1de8a1fa673b64da1316a6412a93d7a9354c50cedb3d7a47f8805",
      "summary": "Hand-written ARM assembly implementing edwards25519 mixed addition and field arithmetic. I checked this target for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/curve25519/edwards25519_pepadd_alt.S",
      "hash": "blake3:47494394dd91937456c8eb62637186e7a9267ded1b99f06684c1d49d0511eb44",
      "summary": "`aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/curve25519/edwards25519_pepadd_alt.S` is a hand-written ARM64 assembly routine for edwards25519 mixed point addition and field arithmetic, with only local register/stack operations and no apparent external control flow. I checked for install hooks, subprocess execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence mechanisms, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}