Review rev_fede55cc666f44a58bd4ec989acb74c0

{
  "summary": "Reviewed `aws-lc/crypto/digest_extra/digest_extra.c`, which contains digest OID/name lookup, ASN.1 marshal/parse helpers, and local wrappers for MD4, BLAKE2b-256, and null digest implementations. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.\nReviewed the target ARM64 assembly routine implementing secp256k1 Montgomery multiplication and its final reduction/correction path. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration behavior, credential/secret access, dynamic code loading, obfuscation, or persistence logic.\nReviewed `aws-lc/crypto/ocsp/internal.h`, which only defines OCSP-related structs, constants, and function prototypes for AWS-LC/OpenSSL compatibility. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain payload logic in this target file.\nReviewed the ARM assembly implementation of `bignum_mul_6_12`, which performs fixed-size 6-limb by 6-limb big-number multiplication with carry propagation and stores the result back to the output buffer. I found no concrete malicious or supply-chain indicators in this target file: no install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence/tampering logic.",
  "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/digest_extra/digest_extra.c",
      "hash": "blake3:5ff1ea0b1dfbd39978cce4f7493fe649cd303ff7d0e12c1929d4e8e949e22cc0",
      "summary": "Reviewed `aws-lc/crypto/digest_extra/digest_extra.c`, which contains digest OID/name lookup, ASN.1 marshal/parse helpers, and local wrappers for MD4, BLAKE2b-256, and null digest implementations. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/secp256k1/bignum_montmul_p256k1.S",
      "hash": "blake3:7f04cb6fd67233dc81cf16e9571092d4a9c452e308193ecfb3906e262e0ddfff",
      "summary": "Reviewed the target ARM64 assembly routine implementing secp256k1 Montgomery multiplication and its final reduction/correction path. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration behavior, credential/secret access, dynamic code loading, obfuscation, or persistence logic.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/ocsp/internal.h",
      "hash": "blake3:48b46f50058d6fe1ef1ee0a161401a8406c9d3d815af176c59bd8c0a3ae103c1",
      "summary": "Reviewed `aws-lc/crypto/ocsp/internal.h`, which only defines OCSP-related structs, constants, and function prototypes for AWS-LC/OpenSSL compatibility. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain payload logic in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/fastmul/bignum_mul_6_12.S",
      "hash": "blake3:3e33320ab4bbfd356dee195b7e1c79a7feac0b3844054fca2bbfeab576d7a152",
      "summary": "Reviewed the ARM assembly implementation of `bignum_mul_6_12`, which performs fixed-size 6-limb by 6-limb big-number multiplication with carry propagation and stores the result back to the output buffer. I found no concrete malicious or supply-chain indicators in this target file: no install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence/tampering logic.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}