Review rev_c10629d90a72451392549158ddd430e3

{
  "summary": "Reviewed the x86-64 assembly routine in `aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_add_sm2.S`. It appears to be a straight SM2 modular addition implementation with fixed-register arithmetic and ABI shims only; I found no concrete install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior.\nReviewed this x86-64 assembly routine implementing optional negation modulo the SM2 field prime. It contains only fixed-operand arithmetic and ABI shims, with no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, or persistence behavior.\nReviewed `builder/cc_builder/apple_aarch64.rs`, which is a static Rust constant enumerating AArch64/ARM assembly source paths for the crypto build. I found no concrete indicators of install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.\nReviewed `builder/cc_builder/linux_aarch64.rs`, which is a static Rust constant enumerating Linux AArch64 crypto and assembly source paths for the build. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.\nReviewed the x86-64 assembly implementation of `bignum_modadd`, which performs an in-memory modular addition/reduction on caller-supplied limbs. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other hidden control transfer, and found no concrete malicious or supply-chain indicators 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/x86_att/sm2/bignum_add_sm2.S",
      "hash": "blake3:4ec288ed57062057c666f41a9263b0b18f17240c1b4b8fa60d3b8cb2d1169cc0",
      "summary": "Reviewed the x86-64 assembly routine in `aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_add_sm2.S`. It appears to be a straight SM2 modular addition implementation with fixed-register arithmetic and ABI shims only; I found no concrete install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/sm2/bignum_optneg_sm2.S",
      "hash": "blake3:01d66948c5da18e2f28bfc319f2913f99525325a8b9b9815e7281280f3638a84",
      "summary": "Reviewed this x86-64 assembly routine implementing optional negation modulo the SM2 field prime. It contains only fixed-operand arithmetic and ABI shims, with no install hooks, network or exfiltration paths, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "builder/cc_builder/apple_aarch64.rs",
      "hash": "blake3:240117277157f2503bf0fe84c84f1189da585ad590df30b0773fa61e5b4fb7a1",
      "summary": "Reviewed `builder/cc_builder/apple_aarch64.rs`, which is a static Rust constant enumerating AArch64/ARM assembly source paths for the crypto build. I found no concrete indicators of install hooks, network or exfiltration logic, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "builder/cc_builder/linux_aarch64.rs",
      "hash": "blake3:68c89f4439db1ff6e41deba55d9bebec59d379ec654837586802b85c85822c65",
      "summary": "Reviewed `builder/cc_builder/linux_aarch64.rs`, which is a static Rust constant enumerating Linux AArch64 crypto and assembly source paths for the build. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/x86_att/generic/bignum_modadd.S",
      "hash": "blake3:bf4a0028686e4390569d682fb70971129c3f01c8b70e4749b9df1694bd30bb6e",
      "summary": "Reviewed the x86-64 assembly implementation of `bignum_modadd`, which performs an in-memory modular addition/reduction on caller-supplied limbs. I checked for install-time hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, persistence, and other hidden control transfer, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}