Review rev_fe66a4abaf4947e691275210059ef06a

{
  "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/cipher_extra/e_rc2.c",
      "hash": "blake3:02b687e135aa98fe986e429cc98e07135d708da0a477f04659c7be8e76eef491",
      "summary": "This file contains the RC2 block cipher implementation for AWS-LC, including key schedule generation, CBC encrypt/decrypt routines, and EVP_CIPHER wrappers. I checked for install-time execution, network/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/cipher_extra/e_rc4.c",
      "hash": "blake3:f19eefaf98412469c3de73e5ac60b982a16ef4dcb43ff69f8bacab82454f8036",
      "summary": "`aws-lc/crypto/cipher_extra/e_rc4.c` is a small RC4 EVP cipher wrapper that only initializes an RC4 key and streams input through `RC4()`. I checked for install-time hooks, network or credential access, 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/cipher_extra/e_tls.c",
      "hash": "blake3:1812f93dbb4585b91cd47b15200f25e39cc56a4a2e97a781660ab0df5326e354",
      "summary": "Reviewed `aws-lc/crypto/cipher_extra/e_tls.c`, which implements TLS-specific AEAD wrappers for CBC and NULL ciphers with HMAC, padding handling, and constant-time MAC verification. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence tampering, or other supply-chain compromise behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}