Review rev_eb9f99cf896144f4b861750e19300be2

{
  "summary": "Reviewed `aws-lc/crypto/x509/x509_txt.c`, which is a small C helper that maps X.509 verification error codes to static strings. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.\nReviewed the ARM assembly implementation of `bignum_cmul_p256`, a fixed-purpose modular multiplication routine for P-256. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators in this file.\nReviewed this x86-64 assembly implementation of `bignum_cmul_sm2`, which performs a constant-time modular multiplication for the SM2 prime using `mulxq`, shifts, carries, and a masked conditional subtraction. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other hidden execution paths, and found no concrete malicious or supply-chain indicators in this file.\nReviewed a small NetBSD AArch64 CPU-capability probe that queries per-core sysctl CPU ID registers and sets OpenSSL feature flags based on the intersection across cores. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.\nReviewed this ARM64 assembly routine for edwards25519 point compression. It only loads the x/y coordinates from the input buffer, combines the x parity bit into the encoded y value, and writes 32 output bytes; I found no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in the 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/x509/x509_txt.c",
      "hash": "blake3:fbf5183f9cd78c7afbafe111c99b0f1ab8a6a2f22b64966f3ac3f4f6ac167d67",
      "summary": "Reviewed `aws-lc/crypto/x509/x509_txt.c`, which is a small C helper that maps X.509 verification error codes to static strings. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/p256/bignum_cmul_p256.S",
      "hash": "blake3:a7da6f103ffef9e453a3693b3ad1d4965f2425c057cecd3809537d29038fb46a",
      "summary": "Reviewed the ARM assembly implementation of `bignum_cmul_p256`, a fixed-purpose modular multiplication routine for P-256. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence tampering, 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/x86_att/sm2/bignum_cmul_sm2.S",
      "hash": "blake3:2352831daf0f009df74b2f199158f962569f8305b9c4d2aba54044682ad18534",
      "summary": "Reviewed this x86-64 assembly implementation of `bignum_cmul_sm2`, which performs a constant-time modular multiplication for the SM2 prime using `mulxq`, shifts, carries, and a masked conditional subtraction. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other hidden execution paths, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/cpucap/cpu_aarch64_netbsd.c",
      "hash": "blake3:c5f25a0d55be83f2f5ec815c695d58b621c3d15c32d856a0d1edab9efbcb666f",
      "summary": "Reviewed a small NetBSD AArch64 CPU-capability probe that queries per-core sysctl CPU ID registers and sets OpenSSL feature flags based on the intersection across cores. I found no concrete malicious or supply-chain indicators in this file: there are no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/curve25519/edwards25519_encode.S",
      "hash": "blake3:eec32c112831e983d288bf58398dfbab1bb64901f95acbc238d60a579ba76d0c",
      "summary": "Reviewed this ARM64 assembly routine for edwards25519 point compression. It only loads the x/y coordinates from the input buffer, combines the x parity bit into the encoded y value, and writes 32 output bytes; I found no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}