/*
* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
*
* Licensed 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 li.strolch.privilege.handler;
import java.util.Map;
/**
* The {@link EncryptionHandler} exposes API which is used to handle encrypting of strings, or returning secure tokens
* for certificates and so forth
*
* @author Robert von Burg <eitch@eitchnet.ch>
*/
public interface EncryptionHandler {
/**
* Calculates or generates a token which can be used to identify certificates and so forth
*
* @return the secure token
*/
public String nextToken();
/**
* Converts a given string, e.g. a password to a hash which is defined by the concrete implementation
*
* @param string
* the string to convert
* @return the hash of the string after converting
*/
public String convertToHash(String string);
/**
* Converts a given byte array, e.g. a password to a hash which is defined by the concrete implementation
*
* @param bytes
* the bytes to convert
* @return the hash of the string after converting
*/
public String convertToHash(byte[] bytes);
/**
* Initialize the concrete {@link EncryptionHandler}. The passed parameter map contains any configuration the
* concrete {@link EncryptionHandler} might need
*
* @param parameterMap
* a map containing configuration properties
*/
public void initialize(Map<String, String> parameterMap);
}