com.github.shepherdviolet.glacimon.java.crypto.base.BaseBCDigestCipher Maven / Gradle / Ivy
/*
* Copyright (C) 2022-2022 S.Violet
*
* 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.
*
* Project GitHub: https://github.com/shepherdviolet/glacimon
* Email: [email protected]
*/
package com.github.shepherdviolet.glacimon.java.crypto.base;
import org.bouncycastle.crypto.Digest;
import com.github.shepherdviolet.glacimon.java.misc.CloseableUtils;
import java.io.IOException;
import java.io.InputStream;
/**
* [Bouncy castle]摘要基本逻辑
*
* Not recommended for direct use
*
* 不建议直接使用
*
* Cipher/Signature/MessageDigest线程不安全!!!
*
* @author shepherdviolet
*/
public class BaseBCDigestCipher {
static {
BouncyCastleProviderUtils.installProvider();
}
/**
* 摘要byte[]
*
* @param bytes bytes
* @param digest 摘要器实例
* @return 摘要bytes
*/
public static byte[] digest(byte[] bytes, Digest digest) {
if (bytes == null){
throw new NullPointerException("[DigestCipher]digest: bytes is null");
}
if (digest == null) {
throw new NullPointerException("[DigestCipher]digest: digest instance is null");
}
digest.update(bytes, 0, bytes.length);
byte[] result = new byte[digest.getDigestSize()];
digest.doFinal(result, 0);
return result;
}
/**
* 摘要输入流(处理完毕会关闭输入流)
*
* @param inputStream 输入流
* @param digest 摘要器实例
* @return 摘要bytes
*/
public static byte[] digestInputStream(InputStream inputStream, Digest digest) throws IOException {
if (inputStream == null){
throw new NullPointerException("[DigestCipher]digestInputStream: inputStream is null");
}
if (digest == null) {
throw new NullPointerException("[DigestCipher]digestInputStream: digest instance is null");
}
try {
byte[] buff = new byte[CryptoConstants.BUFFER_SIZE];
int size;
while((size = inputStream.read(buff)) != -1){
digest.update(buff, 0, size);
}
byte[] result = new byte[digest.getDigestSize()];
digest.doFinal(result, 0);
return result;
}finally {
CloseableUtils.closeQuiet(inputStream);
}
}
}