Review rev_89eef41286ab41d89296b29d7c449016

{
  "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/curve25519/bignum_invsqrt_p25519_alt.S",
      "hash": "blake3:91ca58f3381145736afdb575e99bd3598d91d6ef6a3a02187ef814d0447d701f",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_invsqrt_p25519_alt`, which performs modular inverse-square-root and Legendre-symbol calculations for Curve25519 field elements. I found no concrete supply-chain indicators in this file: no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/curve25519/bignum_madd_n25519.S",
      "hash": "blake3:2f31daf74967ab8252eafec7233214640e7c9b8479b4c74be1891c5ad7cbfa05",
      "summary": "Reviewed this x86-64 assembly routine for `bignum_madd_n25519`, which computes a 4-limb multiply-add and modular reduction for the Curve25519/Ed25519 basepoint order. I checked the file for install hooks, network or exfiltration logic, credential/secret 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/x86_att/curve25519/bignum_madd_n25519_alt.S",
      "hash": "blake3:62dfea464057a3fdd7bf9cdc9461676c5ad1a657c59d6d1ba66234c00fea128a",
      "summary": "Reviewed this x86-64 assembly implementation of `bignum_madd_n25519_alt`, which performs fixed-size modular multiply-add arithmetic for Curve25519/Edwards25519. I found no concrete indicators of install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation/packing, persistence, or other supply-chain compromise behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}