Review rev_0e07f1d873274d00863c51e1b76b981a

{
  "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/x86_att/p384/bignum_add_p384.S",
      "hash": "blake3:5ca39aa7e446715e819a89bce119055bf6944e39a1ee242845de87440c3cda4a",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_add_p384`, which performs a constant-time modular addition for P-384 using only register arithmetic, conditional carry handling, and ABI save/restore on Windows. I found no concrete indicators of install-time execution, subprocess spawning, network or exfiltration behavior, credential or environment access, dynamic code loading, obfuscation, or persistence mechanisms in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_bigendian_6.S",
      "hash": "blake3:9985ebc822eb000963e726ac0771779c69b8babd4d130158bd5d5c37c8728973",
      "summary": "Reviewed the x86-64 assembly routine that converts 384-bit bignum words to and from big-endian form by loading six 64-bit words, applying `bswapq`, and storing them in mirrored order for both SysV and Windows ABIs. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_cmul_p384.S",
      "hash": "blake3:2e409c28f8523a1f32df18375c632d8a6da7b3702f01b0588ef1b75e85c89abc",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_cmul_p384`, which performs fixed modular arithmetic for P-384 using registers, stack save/restore, and direct stores to the output buffer. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_cmul_p384_alt.S",
      "hash": "blake3:af6a82df81b25abc609edc59ebe336490ac88673731b8daf727b93c36b83f14f",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_cmul_p384_alt`, which performs constant-time modular multiplication by a single word for the P-384 field. I checked for install-time hooks, network or credential access, dynamic code loading, obfuscation, persistence, and other payload behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_deamont_p384.S",
      "hash": "blake3:4bcad448744b9bf4020c0cf006b92d28742e1f9923951ebe64a7cc569864af58",
      "summary": "Reviewed the x86-64 assembly in `aws-lc/third_party/s2n-bignum/x86_att/p384/bignum_deamont_p384.S`, which implements P-384 de-Montgomery reduction using fixed arithmetic and ABI register shuffling. I checked for install-time hooks, network or exfiltration behavior, credential or secret access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}