private _SeqOfRequest createRequestList(X509Certificate userCert, X509Certificate caCert) throws Exception {
		_SeqOfRequest requestList = new _SeqOfRequest(1);
		CertID certID = new CertID();
		certID.hashAlgorithm = getHashAlgId();
		certID.issuerNameHash = new Asn1OctetString(digestm(caCert.getSubjectX500Principal().getEncoded(), JCP.GOST_DIGEST_NAME));
		certID.issuerKeyHash = new Asn1OctetString(digestm(caCert.getPublicKey().getEncoded(), JCP.GOST_DIGEST_NAME));
		certID.serialNumber = new CertificateSerialNumber(userCert.getSerialNumber());

		ReqCert reqCert = new ReqCert();
		reqCert.set_certID(certID);
		requestList.elements[0] = new Request(reqCert);

		return requestList;
}
public static byte[] digestm(byte[] bytes, String digestAlgorithmName) throws Exception {
		final MessageDigest digest = MessageDigest.getInstance(digestAlgorithmName);
		digest.update(bytes);
		return digest.digest();
}