Review rev_3085c98316394daca7f82282622d8556

{
  "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/p384/bignum_deamont_p384.S",
      "hash": "blake3:8e053e2a128aa560ceba1183251efcc9f1cdd15c4ac47c3729a9912d6fa71988",
      "summary": "Reviewed the ARM assembly implementation of `bignum_deamont_p384`, which performs constant-time Montgomery de-reduction and stores the result back to the caller-provided buffer. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, 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/arm/p384/bignum_demont_p384.S",
      "hash": "blake3:aedebf14dc6a90bb3b8e9c8bc21ea0dbbbb7def5bee5522fa06e42c43f2082b3",
      "summary": "Reviewed the ARM assembly implementation of `bignum_demont_p384`/`bignum_demont_p384_alt`, which only performs fixed-register Montgomery reduction with direct loads/stores and arithmetic. I found no indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/p384/bignum_double_p384.S",
      "hash": "blake3:405781d3b374deadb6326ee9cd9631ca96ad0a4e6e8d7216d05ba0655f753957",
      "summary": "Reviewed this ARM64 assembly routine for `bignum_double_p384`, which loads a 384-bit field element, doubles it, conditionally subtracts the P-384 modulus, and stores the reduced result. I found no concrete malicious or supply-chain indicators in the target file: no install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence logic.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/p384/bignum_half_p384.S",
      "hash": "blake3:00315a182b816bcc89350d537a0f343dfb5b588d8c7ca8e636dc29e165aef384",
      "summary": "Reviewed the ARM64 assembly implementation of `bignum_half_p384`, which halves a 384-bit integer modulo the P-384 field prime by conditionally adding `p_384`, shifting right, and storing the result. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}