Review rev_71874cf525064d67ba51e717618d8a9c

{
  "summary": "Reviewed `aws-lc/util/fipstools/acvp/acvptool/subprocess/block.go`, which implements ACVP block-cipher test handling by parsing JSON vector sets, validating key/IV/input lengths, and invoking a provided `Transact` wrapper for AES/3DES AFT, CTR, and MCT flows. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration code, credential access, dynamic code loading, obfuscation, or persistence behavior.\nThis file is a static set of CAST cipher lookup tables (`CAST_S_table0` through `CAST_S_table7`) with no executable logic. I checked it for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation/deobfuscation, and persistence tampering, 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/util/fipstools/acvp/acvptool/subprocess/block.go",
      "hash": "blake3:fb09f95499af7a8244015cfe3d373f49d988f2748181913e1b1105a6b65a2c10",
      "summary": "Reviewed `aws-lc/util/fipstools/acvp/acvptool/subprocess/block.go`, which implements ACVP block-cipher test handling by parsing JSON vector sets, validating key/IV/input lengths, and invoking a provided `Transact` wrapper for AES/3DES AFT, CTR, and MCT flows. I found no concrete malicious or supply-chain indicators in this file: no install hooks, network or exfiltration code, credential access, dynamic code loading, obfuscation, or persistence behavior.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/decrepit/cast/cast_tables.c",
      "hash": "blake3:932ace84e155bf1406e70265cd7c1fd243c6422207d48c80ecb66c578a7d2971",
      "summary": "This file is a static set of CAST cipher lookup tables (`CAST_S_table0` through `CAST_S_table7`) with no executable logic. I checked it for install hooks, network or exfiltration behavior, credential access, dynamic code loading, obfuscation/deobfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}