Review rev_8d84ff333a214a5490f0f324e5e3127d

{
  "summary": "Reviewed the ARM64 assembly implementation of `bignum_montsqr_sm2`, which performs an in-place SM2 Montgomery square using fixed integer arithmetic and final conditional reduction. I checked for install hooks, hidden subprocess execution, network/exfiltration, credential access, dynamic code loading, obfuscation, and persistence, and found no concrete malicious or supply-chain indicators in this file.\nReviewed this AArch64 assembly routine implementing MLKEM base multiplication with explicit stack save/restore and straight-line SIMD arithmetic. I found no concrete malicious or supply-chain indicators in the target file: there are no install hooks, subprocess launches, network or exfiltration paths, credential access, dynamic code loading, obfuscation, or persistence/tampering behavior.\nReviewed the ARM assembly implementation of `bignum_montmul_sm2`, which is a straight-line Montgomery multiplication routine for SM2 field arithmetic. I checked this target for install-time hooks, network or exfiltration behavior, credential or secret access, dynamic code loading, obfuscation/deobfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.\nI reviewed `aws-lc/crypto/bio/bio_md_test.cc`, which is a gtest C++ test exercising OpenSSL-style digest BIO read/write behavior across multiple hash algorithms. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence 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/arm/sm2/bignum_montsqr_sm2.S",
      "hash": "blake3:466330424d40f71731d1fb9b640c7c3faa9a4dc141c2a1722b9d5f2ba87bcd88",
      "summary": "Reviewed the ARM64 assembly implementation of `bignum_montsqr_sm2`, which performs an in-place SM2 Montgomery square using fixed integer arithmetic and final conditional reduction. I checked for install hooks, hidden subprocess execution, network/exfiltration, credential access, dynamic code loading, obfuscation, and persistence, 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/mlkem/mlkem_basemul_k3.S",
      "hash": "blake3:86af7f9aa7d2a5a1837d3d9640e341bd96f5eae67dbc33ea9e7db11b71c333fc",
      "summary": "Reviewed this AArch64 assembly routine implementing MLKEM base multiplication with explicit stack save/restore and straight-line SIMD arithmetic. I found no concrete malicious or supply-chain indicators in the target file: there are no install hooks, subprocess launches, network or exfiltration paths, credential access, dynamic code loading, obfuscation, or persistence/tampering behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_montmul_sm2.S",
      "hash": "blake3:3309b7a4ddc8b9e74ea1f4e108b4b1fe3710f68c350e271739648f15dbc000c6",
      "summary": "Reviewed the ARM assembly implementation of `bignum_montmul_sm2`, which is a straight-line Montgomery multiplication routine for SM2 field arithmetic. I checked this target for install-time hooks, network or exfiltration behavior, credential or secret access, dynamic code loading, obfuscation/deobfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/bio/bio_md_test.cc",
      "hash": "blake3:b6df270eb3712a6f8c25e7c8960c821bf8fcccf1fd9a683179e7d0c16ae7cb0f",
      "summary": "I reviewed `aws-lc/crypto/bio/bio_md_test.cc`, which is a gtest C++ test exercising OpenSSL-style digest BIO read/write behavior across multiple hash algorithms. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}