Review rev_a50ac94b4d004dacab7f5ad3eaeb08e7

{
  "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/p521_jmixadd_alt.S",
      "hash": "blake3:b48e8fbd3190ed59d5e6f552d350104c6f62efb92ec4857781b89a388a290f51",
      "summary": "Reviewed an ARM64 assembly implementation of `p521_jmixadd_alt` that performs P-521 mixed Jacobian point addition with field arithmetic, stack/register save-restore, and conditional selection of the identity case. I checked for install-time hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence tampering, and other hidden payload behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}