Review rev_df1036fecc674493af4add09ad71a0d9

{
  "summary": "Reviewed `aws-lc/util/fipstools/acvp/acvptool/subprocess/keyedMac.go`, which parses ACVP keyed-MAC test vectors, validates lengths and directions, hex-decodes inputs, and dispatches MAC generation/verification through a `Transactable` interface. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.\nReviewed `aws-lc/crypto/fipsmodule/modes/cbc.c`, which contains standard CBC-mode encrypt/decrypt routines with IV handling, aliasing checks, and block-wise XOR/copy logic. 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 mechanisms.\nReviewed `aws-lc/ssl/ssl_decrepit.c`, which contains a small filesystem-backed helper that opens a directory, iterates entries, and passes candidate certificate files to OpenSSL. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration logic, credential harvesting, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.\n`aws-lc/crypto/dh_extra/dh_asn1.c` is a small C source file that only implements ASN.1 parse/marshal helpers for Diffie-Hellman parameters (`DH_parse_parameters`, `DH_marshal_parameters`, `d2i_DHparams`, `i2d_DHparams`). I found no concrete malicious or supply-chain indicators in the reviewed file: no install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, persistence tampering, or hidden subprocess execution.\nReviewed `aws-lc/crypto/test/wycheproof_util.cc`, a test-helper implementation for parsing Wycheproof results, digests, curves, and hex BIGNUM values. I found no concrete indicators of install hooks, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence; the file is limited to local parsing/validation logic and OpenSSL API selection.",
  "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/util/fipstools/acvp/acvptool/subprocess/keyedMac.go",
      "hash": "blake3:e2d5dfc44095d044cea2953a6bdfd6561c084dabc95061e18b2c93513f493781",
      "summary": "Reviewed `aws-lc/util/fipstools/acvp/acvptool/subprocess/keyedMac.go`, which parses ACVP keyed-MAC test vectors, validates lengths and directions, hex-decodes inputs, and dispatches MAC generation/verification through a `Transactable` interface. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/modes/cbc.c",
      "hash": "blake3:311545072114db14acdb7e1310e16b5ae9526f1705a540b3eee128fd5750e5bf",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/cbc.c`, which contains standard CBC-mode encrypt/decrypt routines with IV handling, aliasing checks, and block-wise XOR/copy logic. 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 mechanisms.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/ssl/ssl_decrepit.c",
      "hash": "blake3:f6964579f7580ca56fe91f932925605b919d1ba6dc32a2491222cfecaa3e465b",
      "summary": "Reviewed `aws-lc/ssl/ssl_decrepit.c`, which contains a small filesystem-backed helper that opens a directory, iterates entries, and passes candidate certificate files to OpenSSL. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration logic, credential harvesting, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/dh_extra/dh_asn1.c",
      "hash": "blake3:855ead4bea0b09a3bb338092220178c68081a211986553d193ba8450870f3895",
      "summary": "`aws-lc/crypto/dh_extra/dh_asn1.c` is a small C source file that only implements ASN.1 parse/marshal helpers for Diffie-Hellman parameters (`DH_parse_parameters`, `DH_marshal_parameters`, `d2i_DHparams`, `i2d_DHparams`). I found no concrete malicious or supply-chain indicators in the reviewed file: no install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, persistence tampering, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/test/wycheproof_util.cc",
      "hash": "blake3:6769b9fa349c08c84a25e41cabac87b10755a85c4476a471b2fada3b9b25544d",
      "summary": "Reviewed `aws-lc/crypto/test/wycheproof_util.cc`, a test-helper implementation for parsing Wycheproof results, digests, curves, and hex BIGNUM values. I found no concrete indicators of install hooks, network or exfiltration, credential access, dynamic code loading, obfuscation, or persistence; the file is limited to local parsing/validation logic and OpenSSL API selection.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}