Review rev_6672916552554522ae57cd14870481d3

{
  "summary": "Reviewed aws-lc/crypto/cipher_extra/e_des.c, which implements DES and 3DES EVP cipher wrappers (CBC/ECB) using local OpenSSL-compatible DES routines. I checked for install-time hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution; none were present in this file.\nReviewed the target x86_64 AVX2 assembly routine, which appears to only decompress 4-bit packed ML-KEM polynomial coefficients into an output buffer using fixed vector constants and straightforward loads/stores. I checked for install-time hooks, hidden subprocess execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found none in this file.\nReviewed `aws-lc/crypto/ocsp/ocsp_extension.c`, which implements OCSP request/response extension helpers and nonce creation/comparison. I checked for install hooks, network or exfiltration, credential/secret access, dynamic code loading, obfuscation, persistence, and other hidden payload behavior; none were present in this file.\nReviewed `aws-lc/crypto/test/test_util.h`, a test utility header that only declares helpers for hex encoding/decoding, PEM/DER conversion, temporary files, threading/fork test wrappers, and certificate/RSA test construction. I checked for install hooks, hidden subprocess execution, network or exfiltration, credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.\nReviewed the ARMv8.4-A assembly implementation of `sha3_keccak_f1600_alt`, which loads a 25-word Keccak state, runs 24 permutation rounds with round constants from the caller, and writes the state back. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this target file.",
  "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/cipher_extra/e_des.c",
      "hash": "blake3:6e6a308ec2a5fd5e3821693fffd0957f2922fff17199a0304925b033645a3cbb",
      "summary": "Reviewed aws-lc/crypto/cipher_extra/e_des.c, which implements DES and 3DES EVP cipher wrappers (CBC/ECB) using local OpenSSL-compatible DES routines. I checked for install-time hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution; none were present in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/ml_kem/mlkem/native/x86_64/src/poly_decompress_d4.S",
      "hash": "blake3:02bc78796598fff17e6fb8655234d8f158de2b190607163445ab67fd0131cbd0",
      "summary": "Reviewed the target x86_64 AVX2 assembly routine, which appears to only decompress 4-bit packed ML-KEM polynomial coefficients into an output buffer using fixed vector constants and straightforward loads/stores. I checked for install-time hooks, hidden subprocess execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found none in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/ocsp/ocsp_extension.c",
      "hash": "blake3:9dccbd40dcd58375b28ce3c6ecd8bf20d43f5a2b6d94c3ca9ce5035a117a8648",
      "summary": "Reviewed `aws-lc/crypto/ocsp/ocsp_extension.c`, which implements OCSP request/response extension helpers and nonce creation/comparison. I checked for install hooks, network or exfiltration, credential/secret access, dynamic code loading, obfuscation, persistence, and other hidden payload behavior; none were present in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/test/test_util.h",
      "hash": "blake3:951251506ae4264848b6057e51ff2779cd64d62b53f5600ac779c002b8308087",
      "summary": "Reviewed `aws-lc/crypto/test/test_util.h`, a test utility header that only declares helpers for hex encoding/decoding, PEM/DER conversion, temporary files, threading/fork test wrappers, and certificate/RSA test construction. I checked for install hooks, hidden subprocess execution, network or exfiltration, 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/third_party/s2n-bignum/s2n-bignum-imported/arm/sha3/sha3_keccak_f1600_alt.S",
      "hash": "blake3:df9fd7570fb379fe5561591aa08f551369ac9dc6acb21ae9a3d38ee06bdd5172",
      "summary": "Reviewed the ARMv8.4-A assembly implementation of `sha3_keccak_f1600_alt`, which loads a 25-word Keccak state, runs 24 permutation rounds with round constants from the caller, and writes the state back. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}