Review rev_18196090a0d24745b3dfde19b9ba6b09

{
  "summary": "Reviewed the ARM assembly implementation of SHA-256 block processing in `sha256-armv4.S`, including the scalar and NEON code paths, for install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and other payload-construction behavior. The file only contains deterministic cryptographic round logic, constant tables, and architecture-specific optimizations; no concrete malicious or supply-chain indicators were found.",
  "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/generated-src/linux-arm/crypto/fipsmodule/sha256-armv4.S",
      "hash": "blake3:5f357361cb3056139a77c93f0d03c5930d3d74b86f64316baceb8c87b514741f",
      "summary": "Reviewed the ARM assembly implementation of SHA-256 block processing in `sha256-armv4.S`, including the scalar and NEON code paths, for install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, and other payload-construction behavior. The file only contains deterministic cryptographic round logic, constant tables, and architecture-specific optimizations; no concrete malicious or supply-chain indicators were found.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}