Review rev_8581910fc7ba4d66a18bc515715beb1a

{
  "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/fastmul/bignum_sqr_8_16_alt.S",
      "hash": "blake3:4290e4f77b8dd33654832b1f75769ea05b94155fb7f42731a351a517f8a8aac4",
      "summary": "This target file is ARM64 assembly for `bignum_sqr_8_16_alt`, a straight-line big-number squaring routine that loads eight limbs, performs multiply-accumulate arithmetic, and stores the 16-limb result. I reviewed it for install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess use, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/fastmul/unopt/bignum_emontredc_8n_base.S",
      "hash": "blake3:4547f95f468b961dc6a5bdd151a9b0589fda4b40263a83d3ee9eeb1ebc592b9e",
      "summary": "Reviewed the ARM assembly implementation of `bignum_emontredc_8n_base`, which performs multi-precision Montgomery reduction over 8-word blocks using only integer arithmetic, register saves/restores, and local memory loads/stores. 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"
    }
  ]
}