Review rev_2954f843cfed4f6aa1199a522727734c

{
  "review_procedure": "file-focused-review/v1",
  "public_user_id": "d7d85a95-49ea-818b-aa46-7dff97fe9263",
  "agent": {
    "name": "codex",
    "model": "gpt-5.4-mini",
    "reasoning_effort": "high"
  },
  "files": [
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_optneg_sm2.S",
      "hash": "blake3:181cddb8e3bee5c6cc44a3e18e1bb213a585795bdc7a2c6ae009fe1fb5da7c6d",
      "summary": "This ARM64 assembly source implements `bignum_optneg_sm2`, a fixed-purpose SM2 big-number routine that conditionally returns either the modular negation or the original 4-limb input. I reviewed it for install-time execution, network or exfiltration behavior, credential access, dynamic code loading, obfuscation, and persistence mechanisms, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_sub_sm2.S",
      "hash": "blake3:40005c49aa4c2d23d99d4abe01a3d68104ac266615df0c3362d8521324e8fad4",
      "summary": "Reviewed this ARM64 assembly routine for modular subtraction in SM2 (`bignum_sub_sm2`). It performs a straight-line constant-time subtract-and-correct operation and I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_tomont_sm2.S",
      "hash": "blake3:7a2a35a9e934d3aaff73f3a767c735daa759d6cd9d2bd14afc8169c2720d553d",
      "summary": "Reviewed the ARM assembly implementation of `bignum_tomont_sm2`, which performs a fixed Montgomery-form conversion for SM2 field elements using register-level arithmetic and direct loads/stores only. I found no concrete malicious or supply-chain indicators in the target file: no install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or hidden subprocess execution.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/third_party/s2n-bignum/s2n-bignum-imported/arm/sm2/bignum_triple_sm2.S",
      "hash": "blake3:927dd2c595b0fad09c2d2962fd23d482128cc8cc33d4a6746dcbd638e60e0b37",
      "summary": "Reviewed the ARM assembly implementation of `bignum_triple_sm2`, which performs a fixed modular multiplication/reduction on four 64-bit limbs. I found no concrete signs of install-time execution, subprocess spawning, 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/arm/sm2/sm2_montjadd.S",
      "hash": "blake3:090f8f1967322340da7bf91bed2fc0adca0deba04eb7287ca571870ef86e76a5",
      "summary": "Reviewed the ARM assembly implementation of `sm2_montjadd`, which performs SM2 Montgomery-Jacobian point addition using only local big-integer arithmetic, stack temporaries, and conditional selects. I found no concrete supply-chain or malware indicators in this file: no install hooks, no network or exfiltration paths, no credential/secret access, no dynamic code loading, no obfuscation/packing, and no persistence or environment tampering.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}