Review rev_b0e2c34470564a5d9de3916fc2eb11a5

{
  "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/arm/p384/bignum_montsqr_p384_neon.S",
      "hash": "blake3:a86d9a138f578bfbffa5fb81ffbdf31dc88bbe74cf7f7d6454dec2f8a95973e5",
      "summary": "Reviewed the ARM64 assembly implementation of `bignum_montsqr_p384_neon`, which is a hand-optimized Montgomery squaring routine for P-384 with extensive inline scheduling comments. I found no concrete malicious or supply-chain indicators in the target file: no install hooks, network or exfiltration calls, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/arm/p384/bignum_mux_6.S",
      "hash": "blake3:75ff02c09b4998c22278a6771804e5928609d0e1a7bd2e3036b66ca6e7cdb6b8",
      "summary": "Reviewed `aws-lc/third_party/s2n-bignum/arm/p384/bignum_mux_6.S`, which is a small ARM64 routine that conditionally copies one of two 6-limb inputs into `z` based on `p`. I checked for install-time hooks, network or credential access, dynamic code loading, obfuscation, persistence, and other hidden payload behavior; none were present.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/arm/p384/bignum_neg_p384.S",
      "hash": "blake3:2173775d2170170796ce8df8b9fa27712781cb60fd61316b7fffffd062c2f7d6",
      "summary": "Reviewed the ARM64 assembly implementation of `bignum_neg_p384`, which loads a 6-limb field element, conditionally subtracts the P-384 modulus when the input is nonzero, and stores the reduced negation result. I checked for install-time hooks, network or credential access, dynamic code loading, obfuscation, persistence tampering, and other hidden payload behavior, and found none.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/arm/p384/bignum_nonzero_6.S",
      "hash": "blake3:596bfff666cdf3fed55c94c36df31a1eb92462d571f4958e2ef63f6adb491d77",
      "summary": "Reviewed the ARM assembly implementation of `bignum_nonzero_6`, which computes whether a 384-bit input is zero by OR-ing its limbs and returning 0/1. I checked for install-time hooks, network or exfiltration behavior, dynamic code loading, obfuscation, persistence, and secret access, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/arm/p384/bignum_optneg_p384.S",
      "hash": "blake3:68c40876df9ce65b784b12ad08889ec2e8ca982065034ff5d625b718b3cb105e",
      "summary": "Reviewed this ARM64 assembly routine that conditionally negates a 384-bit bignum modulo p_384 and preserves zero inputs. I checked for install-time hooks, hidden subprocesses, network or credential access, dynamic code loading, obfuscation, persistence, and other payload-construction behavior; none were present in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}