Review rev_d7ec59b990f848bfa52b0dc4630d2ed7

{
  "summary": "Reviewed this x86-64 assembly routine for SM2 modular subtraction. It contains only fixed-point arithmetic and ABI glue, with no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior visible in the target file.\nReviewed `aws-lc/crypto/chacha/internal.h`, which is a C header declaring ChaCha20/HChaCha20 entry points and small architecture capability helpers for selecting SSSE3/NEON/AVX2 implementations. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network or exfiltration code, credential access, dynamic loading, obfuscation, or persistence behavior.\nReviewed `aws-lc/crypto/decrepit/ripemd/ripemd_test.cc`, which is a deterministic unit test for RIPEMD-160 vectors and a large-input digest check. 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 hidden subprocess execution.\nReviewed `aws-lc/crypto/fipsmodule/cpucap/cpu_ppc64le.c`, which only probes PPC64LE hardware capability bits, optionally overrides them from the `OPENSSL_ppccap` environment variable, and exposes a vcrypto capability check. 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/x509/t_crl.c`, which only implements CRL pretty-printing helpers (`X509_CRL_print_fp` and `X509_CRL_print`) using OpenSSL/AWS-LC APIs to format issuer, validity, extensions, and revoked entries. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this 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/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_sub_sm2.S",
      "hash": "blake3:52ea92ed658c99fade577c20174d9f09e6ac05e9d7ba90b61de227c51b64ff2e",
      "summary": "Reviewed this x86-64 assembly routine for SM2 modular subtraction. It contains only fixed-point arithmetic and ABI glue, with no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior visible in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/chacha/internal.h",
      "hash": "blake3:d37ceda4fd05a4155c3b61e291d91910199fd7fde1840195b8750604751f7f32",
      "summary": "Reviewed `aws-lc/crypto/chacha/internal.h`, which is a C header declaring ChaCha20/HChaCha20 entry points and small architecture capability helpers for selecting SSSE3/NEON/AVX2 implementations. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network or exfiltration code, credential access, dynamic loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/decrepit/ripemd/ripemd_test.cc",
      "hash": "blake3:fcccb95468ba755a62c2ec7138c52dcfe99bfbafd91968a64c87b66ed95e2b9f",
      "summary": "Reviewed `aws-lc/crypto/decrepit/ripemd/ripemd_test.cc`, which is a deterministic unit test for RIPEMD-160 vectors and a large-input digest check. 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 hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/cpucap/cpu_ppc64le.c",
      "hash": "blake3:b2fdc5d05a7d62c42a71a79ad3ead7649c50265080f21d1345187dd3dc61de8e",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/cpucap/cpu_ppc64le.c`, which only probes PPC64LE hardware capability bits, optionally overrides them from the `OPENSSL_ppccap` environment variable, and exposes a vcrypto capability check. 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/x509/t_crl.c",
      "hash": "blake3:b416f32d8ca770b9e93f56b4a629fc3eaee6efde93b3485eae68ff955f919f9b",
      "summary": "Reviewed `aws-lc/crypto/x509/t_crl.c`, which only implements CRL pretty-printing helpers (`X509_CRL_print_fp` and `X509_CRL_print`) using OpenSSL/AWS-LC APIs to format issuer, validity, extensions, and revoked entries. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}