Review rev_32308f68fd374aa4917fb997c0acd91e

{
  "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/fipsmodule/modes/gcm_nohw.c",
      "hash": "blake3:a8ecb81e69a9505f188f17456f9a191780fd38089614868898d28a411bfc85b1",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/gcm_nohw.c`, which is a constant-time GHASH/POLYVAL fallback implementation with uint128, SSE2, and pure-C multiplication paths plus block-processing helpers. I checked for install-time execution, subprocesses, network or exfiltration, credential/secret access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/modes/gcm_test.cc",
      "hash": "blake3:f90ab4914ac44eb02cbd4c277ef9dad376005935fdead7cd74c4ddfcfb003b72",
      "summary": "`aws-lc/crypto/fipsmodule/modes/gcm_test.cc` is a C++ GoogleTest file that verifies AES-GCM test vectors and architecture-specific ABI behavior for GCM helpers. I checked it for install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/modes/internal.h",
      "hash": "blake3:59c8d361e7f3cce823c77e2c2d64809cb41f0994128124cc571db95c7963fac1",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/internal.h`, which is a C header declaring AES/GCM/CBC/OFB/CFB/XTS/POLYVAL interfaces and platform-specific GHASH/GCM acceleration hooks. I found no concrete supply-chain indicators in this file: no install-time execution, network or exfiltration logic, credential access, dynamic code loading, obfuscation, persistence, or other hidden payload behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/modes/ofb.c",
      "hash": "blake3:0e4b446a54a1942e0d7415d9834cb9f9152f7bb5dc5dc974ae080219e5cf06a2",
      "summary": "Reviewed the AES OFB mode implementation in `aws-lc/crypto/fipsmodule/modes/ofb.c`. It is a small in-place/block XOR routine with assertions and no evidence of install-time execution, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/modes/polyval.c",
      "hash": "blake3:e738d3cbd04349453517b46e5fb2393484cd6f974f74dab4a3dfc5e096c65843",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/polyval.c`, which implements POLYVAL initialization, block updates, and finalization via byte-reversal and GHASH helpers. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or unrelated system probing.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}