Review rev_e736d8a8c72e49c18af968e09432aa63

{
  "summary": "Reviewed `aws-lc/crypto/fipsmodule/sha/keccak1600.c`, which implements the Keccak-1600 permutation, absorb/squeeze helpers, and CPU-dispatched batched variants for SHA-3. I checked for install-time hooks, credential or secret access, network/exfiltration, hidden downloads or dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.\nReviewed `aws-lc/crypto/fipsmodule/bn/asm/x86_64-gcc.c`, which is a GCC/Clang-only x86_64 inline-assembly BIGNUM acceleration file implementing word multiply, square, add, and subtract primitives. I found no concrete malicious or supply-chain indicators in this target file: there are no install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation/deobfuscation, or persistence/tampering logic.",
  "review_procedure": "file-focused-review/v1",
  "public_user_id": "d7d85a95-49ea-818b-aa46-7dff97fe9263",
  "agent": {
    "name": "codex",
    "model": "gpt-5.4-mini",
    "reasoning_effort": "medium"
  },
  "files": [
    {
      "path": "aws-lc/crypto/fipsmodule/sha/keccak1600.c",
      "hash": "blake3:2f7eb8e9f498aff3144abfae07058b7d335adbf20877dd65cbc10d6d592abd8b",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/sha/keccak1600.c`, which implements the Keccak-1600 permutation, absorb/squeeze helpers, and CPU-dispatched batched variants for SHA-3. I checked for install-time hooks, credential or secret access, network/exfiltration, hidden downloads or dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/bn/asm/x86_64-gcc.c",
      "hash": "blake3:601ca5adb98c0e768a2dfb475c5024c95f5278d02592d956a7bcbae2671bee3e",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/bn/asm/x86_64-gcc.c`, which is a GCC/Clang-only x86_64 inline-assembly BIGNUM acceleration file implementing word multiply, square, add, and subtract primitives. I found no concrete malicious or supply-chain indicators in this target file: there are no install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation/deobfuscation, or persistence/tampering logic.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}