com.googlecode.jinahya.nica.util.Sha Maven / Gradle / Ivy
/*
* Copyright 2012 Jin Kwon .
*
* 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 com.googlecode.jinahya.nica.util;
import java.io.UnsupportedEncodingException;
/**
* An abstract class for SHA-1 hashing.
*
* @author Jin Kwon
*/
public abstract class Sha {
/**
* Hashes given {@code data}.
*
* @param data data to hash
*
* @return hashed output
*/
public abstract byte[] hash(final byte[] data);
/**
* Hashes given {@code data}.
*
* @param data the string to hash
*
* @return hashed output
*/
public byte[] hash(final String data) {
if (data == null) {
throw new NullPointerException("data");
}
try {
return hash(data.getBytes("UTF-8"));
} catch (UnsupportedEncodingException uee) {
throw new IllegalArgumentException("\"UTF-8\" is not supported?");
}
}
/**
* Hashes given {@code data} and returns the result as a HEX string.
*
* @param data data to hash.
*
* @return hashed output as a HEX string.
*/
public String hashToString(final byte[] data) {
return Hex.encodeToString(hash(data));
}
/**
* Hashes given {@code data} and returns the result as a HEX string.
*
* @param data the string to hash.
*
* @return hashed output as a HEX string.
*/
public String hashToString(final String data) {
return Hex.encodeToString(hash(data));
}
}