Review rev_1dbe64fd305f4375a9e9c5b146e72148

{
  "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/p384/bignum_littleendian_6.S",
      "hash": "blake3:a0f8d772b58a10d6fcfb26d287df33467cb2dc34e56776bf3c0f574116730e1f",
      "summary": "Reviewed the x86-64 assembly routine that aliases `bignum_littleendian_6`, `bignum_fromlebytes_6`, and `bignum_tolebytes_6`. It is a straight 6-word copy between input and output buffers, and I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_mod_n384.S",
      "hash": "blake3:cbd5c33fecc083aa8cc2de8d83e6f2ef2b410adbe5931bac85c701f5a165ff68",
      "summary": "Reviewed the x86-64 assembly implementation of P-384 modular reduction in `bignum_mod_n384.S`. It appears to perform only constant-time big-number arithmetic and register save/restore, with no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior present in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_mod_n384_6.S",
      "hash": "blake3:e0585fde0ca524c877f82f13f0b58fd14e63729e13ad32c42852391d4bcb3e7b",
      "summary": "Reviewed the handwritten x86-64 assembly routine for P-384 modular reduction in `bignum_mod_n384_6.S`. It contains only fixed arithmetic, ABI shims, and stack metadata directives; I found no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, or persistence behavior in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_mod_n384_alt.S",
      "hash": "blake3:d38e072ce5a87fac5076128c9d74bb9e5cd63af7d84e0d3e5a62c2190eef110f",
      "summary": "Reviewed this x86-64 assembly implementation of `bignum_mod_n384_alt`, which performs fixed P-384 modular reduction with ABI setup, register saves, a short-input copy path, and a loop over big integer limbs. I found no concrete indicators of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, or other supply-chain compromise in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/p384/bignum_mod_p384.S",
      "hash": "blake3:a63e2d74a6c278f47dc68fed798a6e88f3eaaa0d3f6f8e1f18ae56c3620f17d3",
      "summary": "Reviewed the x86-64 assembly routine implementing modular reduction for P-384, including ABI setup, register save/restore, limb loading, and the reduction loop. I found no concrete signs of install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain malicious behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}