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/*
* Copyright (c) 2011-2015 Isode Limited, London, England.
* All rights reserved.
*/
package com.isode.stroke.network;
import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import com.isode.stroke.base.ByteArray;
import com.isode.stroke.crypto.CryptoProvider;
import com.isode.stroke.crypto.Hash;
import com.isode.stroke.base.SafeByteArray;
public class JavaCryptoProvider extends CryptoProvider {
private static class HashProvider implements Hash {
private final MessageDigest digest;
HashProvider(String algorithm) throws NoSuchAlgorithmException {
digest = MessageDigest.getInstance("SHA-1");
}
@Override
public Hash update(ByteArray data) {
digest.update(data.getData());
return this;
}
@Override
public Hash update(SafeByteArray data) {
// digest.update(data.getData());
return this;
}
@Override
public ByteArray getHash() {
return new ByteArray(digest.digest());
}
}
@Override
public Hash createSHA1() {
try {
return new HashProvider("SHA-1");
} catch (NoSuchAlgorithmException e) {
return null;
}
}
@Override
public Hash createMD5() {
try {
return new HashProvider("MD5");
} catch (NoSuchAlgorithmException e) {
return null;
}
}
// @Override
public ByteArray getHMACSHA1(SafeByteArray key, ByteArray data) {
// TODO Auto-generated method stub
return null;
}
@Override
public ByteArray getHMACSHA1(ByteArray key, ByteArray data) {
Mac mac;
try {
mac = Mac.getInstance("HmacSHA1");
mac.init(new SecretKeySpec(key.getData(), mac.getAlgorithm()));
return new ByteArray(mac.doFinal(data.getData()));
} catch (NoSuchAlgorithmException e) {
return null;
} catch (InvalidKeyException e) {
return null;
}
}
@Override
public boolean isMD5AllowedForCrypto() {
return false;
}
}
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