Review rev_ea6b3289f08f45cda62f7bbb65714a3e

{
  "summary": "Reviewed aws-lc/crypto/asn1/f_string.c, which contains a small ASN.1 string-to-BIO formatter that hex-encodes bytes and inserts line breaks every 35 characters. I checked for install hooks, network/exfiltration, credential or secret access, dynamic code loading, obfuscation/deobfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.\nReviewed `aws-lc/crypto/cipher_extra/e_rc4.c`, which only defines the RC4 EVP cipher wrapper and its key setup/encrypt routine. 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 in this file.\nReviewed `aws-lc/crypto/x509/a_digest.c`, which contains two small ASN.1 helper routines that serialize an object and hash the serialized bytes with `EVP_Digest`. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.\nReviewed `aws-lc/crypto/fipsmodule/kdf/internal.h`, which only defines KDF-related constants, opaque context structs, and digest/HMAC variant function prototypes. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.\nReviewed `aws-lc/crypto/x509/x_sig.c`, which only defines the `X509_SIG` ASN.1 structure and two accessor functions (`X509_SIG_get0`/`X509_SIG_getm`) that copy internal pointers to caller outputs. 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, 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/asn1/f_string.c",
      "hash": "blake3:e459de909023a2ce759ca09a0b464a902083e859aa0032a29f4939fdb85584d9",
      "summary": "Reviewed aws-lc/crypto/asn1/f_string.c, which contains a small ASN.1 string-to-BIO formatter that hex-encodes bytes and inserts line breaks every 35 characters. I checked for install hooks, network/exfiltration, credential or secret access, dynamic code loading, obfuscation/deobfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/cipher_extra/e_rc4.c",
      "hash": "blake3:f19eefaf98412469c3de73e5ac60b982a16ef4dcb43ff69f8bacab82454f8036",
      "summary": "Reviewed `aws-lc/crypto/cipher_extra/e_rc4.c`, which only defines the RC4 EVP cipher wrapper and its key setup/encrypt routine. 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 in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/x509/a_digest.c",
      "hash": "blake3:6523428e23ab2e81178bd8bb807e3cb5af727ad5f2bc29854cba4063db4858ba",
      "summary": "Reviewed `aws-lc/crypto/x509/a_digest.c`, which contains two small ASN.1 helper routines that serialize an object and hash the serialized bytes with `EVP_Digest`. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/kdf/internal.h",
      "hash": "blake3:c3ce4113792ac7646842b178031c44cf8ddd228902e3413c49a73cdc3bb335c8",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/kdf/internal.h`, which only defines KDF-related constants, opaque context structs, and digest/HMAC variant function prototypes. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/x509/x_sig.c",
      "hash": "blake3:89f05a85c5e6a385fc5fdd870962b0c8319a4ec262d54ce27f6eb4b20759b6b0",
      "summary": "Reviewed `aws-lc/crypto/x509/x_sig.c`, which only defines the `X509_SIG` ASN.1 structure and two accessor functions (`X509_SIG_get0`/`X509_SIG_getm`) that copy internal pointers to caller outputs. 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, or persistence/tampering logic.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}