Review rev_b7e63343c67749e1b122068931eab86e

{
  "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/x86_att/p256/bignum_mod_p256_4.S",
      "hash": "blake3:249def095b0abaf5c08c56b2a27f1748b1a7adb270ee3339b012c36cf9d453b6",
      "summary": "Reviewed an x86-64 assembly implementation of modular reduction for the P-256 field in s2n-bignum. It contains only arithmetic and ABI wrapper logic; I found no concrete signs of install-time execution, network or credential access, dynamic code loading, obfuscation, persistence, or other supply-chain behavior in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p256/bignum_mod_p256_alt.S",
      "hash": "blake3:4927d90bda048775865f855e4abec30932e77b010bbbcb964ebb0897c193a679",
      "summary": "Reviewed the x86-64 assembly in `bignum_mod_p256_alt.S`, which implements modular reduction modulo the P-256 field prime with ABI setup, register save/restore, and integer arithmetic only. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}