pure-php implementation of authenticode verifier.

• authenticode hash (PE32/PE32+)
• signedData integrity
• timestamping (simple countersignature/RFC 3161)
• certificate chain engine with validation:
• signature (RSA/ECDSA with SHA-1/2)
• validity period
• keyUsage/extKeyUsage
• basicConstraints (CA)

require_once "Authenticode.php";

$acVerifier = new Authenticode($pathToPE);
var_dump($acVerifier->isValid());

php tools/verifyAC.php /path/to/PE

certificates (pem format) in trusted/codesigning are trusted as root CA

• CRL validation
• CRL loader
• CRL parser/validator
• validate certificate with CRL
• OCSP support
• OCSP client
• validate certificate with OCSP result
• basicConstraints (pathlen)
• restrict usage of CA certificates