Review rev_cd858df5cf20431fa2616cf49472e1e2

{
  "summary": "Reviewed `aws-lc/crypto/fipsmodule/rsa/padding.c`, which implements RSA PKCS#1 type 1 and PSS padding add/check routines plus MGF1 digest expansion. I found no concrete malicious or supply-chain indicators: there are no install hooks, network or exfiltration paths, credential/secret access, dynamic code loading, obfuscation, or persistence/tampering behavior in the target file.\nReviewed `aws-lc/crypto/fipsmodule/sha/sha256.c`, which is a conventional SHA-224/SHA-256 implementation with FIPS service-indicator bookkeeping and hardware-capability dispatch. 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/ml_kem/mlkem/native/x86_64/src/poly_compress_d10.S`, an auto-derived AVX2 assembly routine that compresses polynomial coefficients into a packed byte buffer. I checked for install hooks, hidden subprocess or loader behavior, network/exfiltration, credential access, obfuscation, persistence tampering, and other supply-chain indicators, and found no concrete malicious or suspicious 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/rsa/padding.c",
      "hash": "blake3:0182201998cb7f27b261c7479bd2743a1322d08086e2d81b5a47d06996bd1207",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/rsa/padding.c`, which implements RSA PKCS#1 type 1 and PSS padding add/check routines plus MGF1 digest expansion. I found no concrete malicious or supply-chain indicators: there are no install hooks, network or exfiltration paths, credential/secret access, dynamic code loading, obfuscation, or persistence/tampering behavior in the target file.",
      "severity": "none",
      "confidence": "high"
    },
    {
      "path": "aws-lc/crypto/fipsmodule/sha/sha256.c",
      "hash": "blake3:f038e0677eb4ef4452d7f87c63b65ac01af46e29043625a824b7209cea447274",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/sha/sha256.c`, which is a conventional SHA-224/SHA-256 implementation with FIPS service-indicator bookkeeping and hardware-capability dispatch. 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/ml_kem/mlkem/native/x86_64/src/poly_compress_d10.S",
      "hash": "blake3:b4380c971147c6826e2c26b9eee35c4d3d9fad18665bcc6cb861539b9c4f694c",
      "summary": "Reviewed `aws-lc/crypto/fipsmodule/ml_kem/mlkem/native/x86_64/src/poly_compress_d10.S`, an auto-derived AVX2 assembly routine that compresses polynomial coefficients into a packed byte buffer. I checked for install hooks, hidden subprocess or loader behavior, network/exfiltration, credential access, obfuscation, persistence tampering, and other supply-chain indicators, and found no concrete malicious or suspicious behavior in this file.",
      "severity": "none",
      "confidence": "high"
    }
  ]
}