Review rev_ca5ea82fc9464a12bdb9024210768f95

{
  "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/ctr.c`, which implements CTR-mode block encryption helpers and counter increment logic for AES-like use. I checked for install hooks, network or exfiltration paths, credential/secret access, dynamic code loading, obfuscation, persistence tampering, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.\nReviewed `aws-lc/include/openssl/base64.h`, a public C header that declares base64 encoding/decoding APIs and an internal context struct. I checked for install hooks, hidden subprocess execution, network or exfiltration paths, credential or secret access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators in this file.\nReviewed `aws-lc/util/fipstools/acvp/acvptool/subprocess/kas.go`, which is a parser/dispatcher for ACVP KAS vector sets that validates test-group fields, hex-decodes inputs, and calls a provided `Transactable` to compute or verify ECDH outputs. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.\nReviewed `aws-lc/crypto/fipsmodule/digest/md32_common.h`, a generic 32-bit digest buffer/finalization helper for hashing contexts. I checked for install-time hooks, subprocesses, network or credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.\nReviewed `aws-lc/crypto/perlasm/x86nasm.pl`, a Perl backend that emits NASM/MASM-style assembly directives and label decorations for the build system. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior 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/crypto/fipsmodule/modes/ctr.c",
      "hash": "blake3:888b3281a493f593c4c973abc843ef289eb9e0687a1cc56cb7ff3bde32bfcb86",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/modes/ctr.c`, which implements CTR-mode block encryption helpers and counter increment logic for AES-like use. I checked for install hooks, network or exfiltration paths, credential/secret access, dynamic code loading, obfuscation, persistence tampering, and hidden subprocess execution, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/include/openssl/base64.h",
      "hash": "blake3:e2cc96a09946b9bd5b89367657dcd2242bf29e1e2b4726d486a0e70aee489376",
      "summary": "Reviewed `aws-lc/include/openssl/base64.h`, a public C header that declares base64 encoding/decoding APIs and an internal context struct. I checked for install hooks, hidden subprocess execution, network or exfiltration paths, credential or secret access, dynamic code loading, obfuscation, and persistence tampering, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/util/fipstools/acvp/acvptool/subprocess/kas.go",
      "hash": "blake3:b829a3e38ab66a5e1b051d288d6cbdc8d0adf8a6c68a0610f47f521f588ab2c4",
      "summary": "Reviewed `aws-lc/util/fipstools/acvp/acvptool/subprocess/kas.go`, which is a parser/dispatcher for ACVP KAS vector sets that validates test-group fields, hex-decodes inputs, and calls a provided `Transactable` to compute or verify ECDH outputs. I found no concrete indicators of install hooks, network/exfiltration, credential access, dynamic code loading, obfuscation, persistence, or other supply-chain compromise behavior in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/digest/md32_common.h",
      "hash": "blake3:a165fa8e24df36c8ea1a161bcceb195908377294b2b3a6b63871dfe371c2f63d",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/digest/md32_common.h`, a generic 32-bit digest buffer/finalization helper for hashing contexts. I checked for install-time hooks, subprocesses, network or credential access, dynamic code loading, obfuscation, and persistence behavior, and found no concrete malicious or supply-chain indicators in this file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/perlasm/x86nasm.pl",
      "hash": "blake3:770bca9831527642c797cbed410ccdc4f177e7d7a64a478914ede2317a2f3030",
      "summary": "Reviewed `aws-lc/crypto/perlasm/x86nasm.pl`, a Perl backend that emits NASM/MASM-style assembly directives and label decorations for the build system. I found no concrete indicators of install-time execution, network/exfiltration, credential access, dynamic code loading, obfuscation, or persistence behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}