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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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 org.apache.harmony.xnet.provider.jsse;
import java.math.BigInteger;
import java.security.InvalidKeyException;
import java.security.interfaces.DSAParams;
import java.security.interfaces.DSAPrivateKey;
import java.security.spec.DSAPrivateKeySpec;
import java.security.spec.InvalidKeySpecException;
public class OpenSSLDSAPrivateKey implements DSAPrivateKey {
private static final long serialVersionUID = 6524734576187424628L;
private final OpenSSLKey key;
private OpenSSLDSAParams params;
OpenSSLDSAPrivateKey(OpenSSLKey key) {
this.key = key;
}
OpenSSLKey getOpenSSLKey() {
return key;
}
OpenSSLDSAPrivateKey(DSAPrivateKeySpec dsaKeySpec) throws InvalidKeySpecException {
try {
key = new OpenSSLKey(NativeCrypto.EVP_PKEY_new_DSA(
dsaKeySpec.getP().toByteArray(),
dsaKeySpec.getQ().toByteArray(),
dsaKeySpec.getG().toByteArray(),
null,
dsaKeySpec.getX().toByteArray()));
} catch (Exception e) {
throw new InvalidKeySpecException(e);
}
}
private void ensureReadParams() {
if (params == null) {
params = new OpenSSLDSAParams(key);
}
}
static OpenSSLKey getInstance(DSAPrivateKey dsaPrivateKey) throws InvalidKeyException {
try {
DSAParams dsaParams = dsaPrivateKey.getParams();
return new OpenSSLKey(NativeCrypto.EVP_PKEY_new_DSA(
dsaParams.getP().toByteArray(),
dsaParams.getQ().toByteArray(),
dsaParams.getG().toByteArray(),
null,
dsaPrivateKey.getX().toByteArray()));
} catch (Exception e) {
throw new InvalidKeyException(e);
}
}
@Override
public DSAParams getParams() {
ensureReadParams();
return params;
}
@Override
public String getAlgorithm() {
return "DSA";
}
@Override
public String getFormat() {
/*
* If we're using an OpenSSL ENGINE, there's no guarantee we can export
* the key. Returning {@code null} tells the caller that there's no
* encoded format.
*/
if (key.isEngineBased()) {
return null;
}
return "PKCS#8";
}
@Override
public byte[] getEncoded() {
/*
* If we're using an OpenSSL ENGINE, there's no guarantee we can export
* the key. Returning {@code null} tells the caller that there's no
* encoded format.
*/
if (key.isEngineBased()) {
return null;
}
return NativeCrypto.i2d_PKCS8_PRIV_KEY_INFO(key.getPkeyContext());
}
@Override
public BigInteger getX() {
ensureReadParams();
return params.getX();
}
public int getPkeyContext() {
return key.getPkeyContext();
}
public String getPkeyAlias() {
return key.getAlias();
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (o instanceof OpenSSLDSAPrivateKey) {
OpenSSLDSAPrivateKey other = (OpenSSLDSAPrivateKey) o;
/*
* We can shortcut the true case, but it still may be equivalent but
* different copies.
*/
if (key.equals(other.getOpenSSLKey())) {
return true;
}
}
if (!(o instanceof DSAPrivateKey)) {
return false;
}
ensureReadParams();
final BigInteger x = params.getX();
if (x == null) {
/*
* If our X is null, we can't tell if these two private keys are
* equivalent. This usually happens if this key is ENGINE-based. If
* the other key was ENGINE-based, we should have caught it in the
* OpenSSLDSAPrivateKey case.
*/
return false;
}
final DSAPrivateKey other = (DSAPrivateKey) o;
return x.equals(other.getX()) && params.equals(other.getParams());
}
@Override
public int hashCode() {
ensureReadParams();
int hash = 1;
final BigInteger x = getX();
if (x != null) {
hash = hash * 3 + x.hashCode();
}
hash = hash * 7 + params.hashCode();
return hash;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("OpenSSLDSAPrivateKey{");
if (key.isEngineBased()) {
sb.append("key=");
sb.append(key);
sb.append('}');
return sb.toString();
}
ensureReadParams();
sb.append("X=");
sb.append(params.getX().toString(16));
sb.append(',');
sb.append("params=");
sb.append(params.toString());
sb.append('}');
return sb.toString();
}
}
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