Review rev_c889ef01ba8847db974f37ad1ccca776

{
  "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/crypto/chacha/chacha.c",
      "hash": "blake3:d20c3e22660f1e0de05a25d11a841e59fc23ef292be4addce8e12e9be356f98e",
      "summary": "Reviewed the ChaCha20/HChaCha20 implementation in aws-lc/crypto/chacha/chacha.c, including the ASM-dispatch wrapper and the pure C fallback, and found only in-memory cipher state setup and block processing. I did not find concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/chacha/chacha_test.cc",
      "hash": "blake3:081605f91e99c0f92bdd9d6bcbf8142127485cf1a343e650f55592a26f898467",
      "summary": "`aws-lc/crypto/chacha/chacha_test.cc` is a C++ unit test for ChaCha20 that verifies known-answer vectors, counter overflow behavior, and optional ABI-specific implementations across multiple input lengths. I checked for install-time execution, network or exfiltration paths, credential or secret access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/chacha/internal.h",
      "hash": "blake3:d37ceda4fd05a4155c3b61e291d91910199fd7fde1840195b8750604751f7f32",
      "summary": "Reviewed `aws-lc/crypto/chacha/internal.h`, which is a ChaCha20/HChaCha20 internal API header that only contains function declarations and architecture-gated capability helpers. I checked for install-time execution, network or exfiltration paths, credential access, dynamic code loading, obfuscation, and persistence hooks, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}