/**
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */
package org.apache.kerby.kerberos.kerb.crypto.enc;

import org.apache.kerby.kerberos.kerb.KrbException;

/**
 * Ref. MIT Krb5:krb5_enc_provider
 */

/**
 * Encryption provider that provides encryption/decryption functions
 * for implementing an encryption type defined by Kerberos RFC3961.
 */
public interface EncryptProvider {

    int keyInputSize(); //input size to make key
    int keySize(); //output key size
    int blockSize(); //crypto block size

    void encrypt(byte[] key, byte[] cipherState, byte[] data) throws KrbException;
    void decrypt(byte[] key, byte[] cipherState, byte[] data) throws KrbException;
    void encrypt(byte[] key, byte[] data) throws KrbException;
    void decrypt(byte[] key, byte[] data) throws KrbException;
    byte[] cbcMac(byte[] key, byte[] iv, byte[] data) throws KrbException;
    boolean supportCbcMac();

}
