Review rev_6f486abdec9946a3aa163d077719a20d

{
  "summary": "Reviewed the ARM assembly in `aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/sm2_montjadd.S`, which implements SM2 Montgomery-Jacobian point addition using local field arithmetic, stack temporaries, and conditional moves only. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this target file.\nReviewed the target file as a standalone x86-64 assembly implementation of `bignum_ksqr_16_32`, which performs fixed-function big-number squaring with register saves/restores and ABI handling only. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators.",
  "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/sm2_montjadd.S",
      "hash": "blake3:090f8f1967322340da7bf91bed2fc0adca0deba04eb7287ca571870ef86e76a5",
      "summary": "Reviewed the ARM assembly in `aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/sm2_montjadd.S`, which implements SM2 Montgomery-Jacobian point addition using local field arithmetic, stack temporaries, and conditional moves only. I found no concrete indicators of install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, or persistence in this target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/fastmul/bignum_ksqr_16_32.S",
      "hash": "blake3:adc1b1a52d8bbac13945d6db12f350261ccf7409ab100c719f117f8d98c3a1cb",
      "summary": "Reviewed the target file as a standalone x86-64 assembly implementation of `bignum_ksqr_16_32`, which performs fixed-function big-number squaring with register saves/restores and ABI handling only. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence tampering, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}