Review rev_d0a46966ff2f409297a0a373c3250482

{
  "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/p521/bignum_sqr_p521.S",
      "hash": "blake3:67e7b2587e3bc908750c556f08d7d4e4309d17bd9aea2eb7e48ffc4e5be345f0",
      "summary": "This file is handwritten ARM64 assembly for `bignum_sqr_p521`, implementing P-521 finite-field squaring and modular reduction on nine 64-bit limbs before storing the result back to the caller-provided output buffer. I checked the target for install-time hooks, subprocess launches, network/exfiltration, credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}