138 lines
3.4 KiB
Java
138 lines
3.4 KiB
Java
/* WolfCryptMessageDigestSha512.java
|
|
*
|
|
* Copyright (C) 2006-2022 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfSSL. (formerly known as CyaSSL)
|
|
*
|
|
* wolfSSL is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfSSL is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
package com.wolfssl.provider.jce;
|
|
|
|
import java.util.Arrays;
|
|
import java.security.MessageDigestSpi;
|
|
import javax.crypto.ShortBufferException;
|
|
|
|
import com.wolfssl.wolfcrypt.Sha512;
|
|
import com.wolfssl.provider.jce.WolfCryptDebug;
|
|
|
|
/**
|
|
* wolfCrypt JCE SHA2-512 MessageDigest wrapper
|
|
*/
|
|
public final class WolfCryptMessageDigestSha512
|
|
extends MessageDigestSpi implements Cloneable {
|
|
|
|
/* internal reference to wolfCrypt JNI Sha object */
|
|
private Sha512 sha;
|
|
|
|
/* for debug logging */
|
|
private WolfCryptDebug debug;
|
|
|
|
/**
|
|
* Create new WolfCryptMessageDigestSha512 object
|
|
*/
|
|
public WolfCryptMessageDigestSha512() {
|
|
|
|
sha = new Sha512();
|
|
sha.init();
|
|
}
|
|
|
|
/**
|
|
* Create new WolfCryptMessageDigestSha512 based on existing Sha512 object.
|
|
* Existing object should already be initialized.
|
|
*
|
|
* @param sha initialized Sha512 object to be used with this MessageDigest
|
|
*/
|
|
private WolfCryptMessageDigestSha512(Sha512 sha) {
|
|
this.sha = sha;
|
|
}
|
|
|
|
@Override
|
|
protected byte[] engineDigest() {
|
|
|
|
byte[] digest = new byte[Sha512.DIGEST_SIZE];
|
|
|
|
try {
|
|
|
|
this.sha.digest(digest);
|
|
|
|
} catch (ShortBufferException e) {
|
|
throw new RuntimeException(e.getMessage());
|
|
}
|
|
|
|
if (debug.DEBUG)
|
|
log("generated final digest, len: " + digest.length);
|
|
|
|
return digest;
|
|
}
|
|
|
|
@Override
|
|
protected void engineReset() {
|
|
|
|
this.sha.init();
|
|
|
|
if (debug.DEBUG)
|
|
log("engine reset");
|
|
}
|
|
|
|
@Override
|
|
protected void engineUpdate(byte input) {
|
|
|
|
byte[] tmp = new byte[1];
|
|
tmp[0] = input;
|
|
|
|
this.sha.update(tmp, 1);
|
|
|
|
if (debug.DEBUG)
|
|
log("update with single byte");
|
|
}
|
|
|
|
@Override
|
|
protected void engineUpdate(byte[] input, int offset, int len) {
|
|
|
|
this.sha.update(input, offset, len);
|
|
|
|
if (debug.DEBUG)
|
|
log("update, offset: " + offset + ", len: " + len);
|
|
}
|
|
|
|
@Override
|
|
protected int engineGetDigestLength() {
|
|
return this.sha.digestSize();
|
|
}
|
|
|
|
private void log(String msg) {
|
|
debug.print("[MessageDigest, SHA512] " + msg);
|
|
}
|
|
|
|
@Override
|
|
public Object clone() {
|
|
Sha512 shaCopy = new Sha512(this.sha);
|
|
return new WolfCryptMessageDigestSha512(shaCopy);
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
@Override
|
|
protected void finalize() throws Throwable {
|
|
try {
|
|
if (this.sha != null)
|
|
this.sha.releaseNativeStruct();
|
|
} finally {
|
|
super.finalize();
|
|
}
|
|
}
|
|
}
|
|
|