Review rev_09626aa1226044c79297f19e14df9ddd

{
  "summary": "Reviewed the Go generator script that emits secp256k1 ECDH test vectors by deriving pseudo-random scalars from SHA-256 and printing public/private/shared values. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.\nReviewed the ARM64 assembly routine in `aws-lc/third_party/s2n-bignum/arm/p384/bignum_sub_p384.S`; it is a straight-line modular subtraction implementation for P-384 with fixed input/output pointers, conditional correction via carry mask, and a final store, and I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess behavior.\nReviewed `aws-lc/crypto/dilithium/pqcrystals_dilithium_ref_common/poly.h`, which is a plain C header declaring Dilithium polynomial types and function prototypes. I checked for install-time hooks, hidden subprocesses, network or credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators, and found none in this file.\nReviewed `aws-lc/crypto/refcount_test.cc`, a small GoogleTest unit test covering refcount increment/decrement saturation and threaded race behavior. I checked for install hooks, network or exfiltration, credential access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators in this file.\nReviewed `aws-lc/crypto/x509/i2d_pr.c`, which contains a small `i2d_PrivateKey` dispatcher that serializes RSA, EC, and DSA private keys and returns an ASN.1 error for unsupported key types. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators; none were present 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/crypto/ecdh_extra/make_secp256k1_test_vectors.go",
      "hash": "blake3:71087ce3cd0d5773396bc10843cfca9e5af063e4386e2b78baa0d2aceefa36b6",
      "summary": "Reviewed the Go generator script that emits secp256k1 ECDH test vectors by deriving pseudo-random scalars from SHA-256 and printing public/private/shared values. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/arm/p384/bignum_sub_p384.S",
      "hash": "blake3:953cbf018d5e2189d546c620c96e5549eafcba7a84f4ff5b8473033d7766b0e6",
      "summary": "Reviewed the ARM64 assembly routine in `aws-lc/third_party/s2n-bignum/arm/p384/bignum_sub_p384.S`; it is a straight-line modular subtraction implementation for P-384 with fixed input/output pointers, conditional correction via carry mask, and a final store, and I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/dilithium/pqcrystals_dilithium_ref_common/poly.h",
      "hash": "blake3:7e71668d497622509cb4bf539cc49bdf58a0a2b35c54400e2c4e06a78f0224e6",
      "summary": "Reviewed `aws-lc/crypto/dilithium/pqcrystals_dilithium_ref_common/poly.h`, which is a plain C header declaring Dilithium polynomial types and function prototypes. I checked for install-time hooks, hidden subprocesses, network or 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/refcount_test.cc",
      "hash": "blake3:17afb4c4ca9400b7db12874b4f3463987106d45e7841d4078622fb9e4fb186de",
      "summary": "Reviewed `aws-lc/crypto/refcount_test.cc`, a small GoogleTest unit test covering refcount increment/decrement saturation and threaded race behavior. I checked for install hooks, network or exfiltration, 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/crypto/x509/i2d_pr.c",
      "hash": "blake3:e02e6befe927af5c064ff7386368a296a6d0855b834476ac3722d525b9035717",
      "summary": "Reviewed `aws-lc/crypto/x509/i2d_pr.c`, which contains a small `i2d_PrivateKey` dispatcher that serializes RSA, EC, and DSA private keys and returns an ASN.1 error for unsupported key types. I checked for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other supply-chain indicators; none were present in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}