/* * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package com.sun.crypto.provider;import java.security.Key;import java.security.PublicKey;import java.security.PrivateKey;import java.security.KeyFactory;import java.security.InvalidKeyException;import java.security.NoSuchProviderException;import java.security.NoSuchAlgorithmException;import java.security.spec.PKCS8EncodedKeySpec;import java.security.spec.X509EncodedKeySpec;import java.security.spec.InvalidKeySpecException;import javax.crypto.SecretKey;import javax.crypto.Cipher;import javax.crypto.spec.SecretKeySpec;/** * This class is a helper class which construct key objects * from encoded keys. * * @author Sharon Liu * */final class ConstructKeys { /** * Construct a public key from its encoding. * * @param encodedKey the encoding of a public key. * * @param encodedKeyAlgorithm the algorithm the encodedKey is for. * * @return a public key constructed from the encodedKey. */ private static final PublicKey constructPublicKey(byte[] encodedKey, String encodedKeyAlgorithm) throws InvalidKeyException, NoSuchAlgorithmException { PublicKey key = null; try { KeyFactory keyFactory = KeyFactory.getInstance(encodedKeyAlgorithm, "SunJCE"); X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encodedKey); key = keyFactory.generatePublic(keySpec); } catch (NoSuchAlgorithmException nsae) { // Try to see whether there is another // provider which supports this algorithm try { KeyFactory keyFactory = KeyFactory.getInstance(encodedKeyAlgorithm); X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encodedKey); key = keyFactory.generatePublic(keySpec); } catch (NoSuchAlgorithmException nsae2) { throw new NoSuchAlgorithmException("No installed providers " + "can create keys for the " + encodedKeyAlgorithm + "algorithm"); } catch (InvalidKeySpecException ikse2) { InvalidKeyException ike = new InvalidKeyException("Cannot construct public key"); ike.initCause(ikse2); throw ike; } } catch (InvalidKeySpecException ikse) { InvalidKeyException ike = new InvalidKeyException("Cannot construct public key"); ike.initCause(ikse); throw ike; } catch (NoSuchProviderException nspe) { // Should never happen. } return key; } /** * Construct a private key from its encoding. * * @param encodedKey the encoding of a private key. * * @param encodedKeyAlgorithm the algorithm the wrapped key is for. * * @return a private key constructed from the encodedKey. */ private static final PrivateKey constructPrivateKey(byte[] encodedKey, String encodedKeyAlgorithm) throws InvalidKeyException, NoSuchAlgorithmException { PrivateKey key = null; try { KeyFactory keyFactory = KeyFactory.getInstance(encodedKeyAlgorithm, "SunJCE"); PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey); return keyFactory.generatePrivate(keySpec); } catch (NoSuchAlgorithmException nsae) { // Try to see whether there is another // provider which supports this algorithm try { KeyFactory keyFactory = KeyFactory.getInstance(encodedKeyAlgorithm); PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey); key = keyFactory.generatePrivate(keySpec); } catch (NoSuchAlgorithmException nsae2) { throw new NoSuchAlgorithmException("No installed providers " + "can create keys for the " + encodedKeyAlgorithm + "algorithm"); } catch (InvalidKeySpecException ikse2) { InvalidKeyException ike = new InvalidKeyException("Cannot construct private key"); ike.initCause(ikse2); throw ike; } } catch (InvalidKeySpecException ikse) { InvalidKeyException ike = new InvalidKeyException("Cannot construct private key"); ike.initCause(ikse); throw ike; } catch (NoSuchProviderException nspe) { // Should never happen. } return key; } /** * Construct a secret key from its encoding. * * @param encodedKey the encoding of a secret key. * * @param encodedKeyAlgorithm the algorithm the secret key is for. * * @return a secret key constructed from the encodedKey. */ private static final SecretKey constructSecretKey(byte[] encodedKey, String encodedKeyAlgorithm) { return (new SecretKeySpec(encodedKey, encodedKeyAlgorithm)); } static final Key constructKey(byte[] encoding, String keyAlgorithm, int keyType) throws InvalidKeyException, NoSuchAlgorithmException { Key result = null; switch (keyType) { case Cipher.SECRET_KEY: result = ConstructKeys.constructSecretKey(encoding, keyAlgorithm); break; case Cipher.PRIVATE_KEY: result = ConstructKeys.constructPrivateKey(encoding, keyAlgorithm); break; case Cipher.PUBLIC_KEY: result = ConstructKeys.constructPublicKey(encoding, keyAlgorithm); break; } return result; }}
/*
* Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.crypto.provider;
import java.security.Key;
import java.security.PublicKey;
import java.security.PrivateKey;
import java.security.KeyFactory;
import java.security.InvalidKeyException;
import java.security.NoSuchProviderException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.security.spec.InvalidKeySpecException;
import javax.crypto.SecretKey;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
/**
* This class is a helper class which construct key objects
* from encoded keys.
*
* @author Sharon Liu
*
*/
final class ConstructKeys {
/**
* Construct a public key from its encoding.
*
* @param encodedKey the encoding of a public key.
*
* @param encodedKeyAlgorithm the algorithm the encodedKey is for.
*
* @return a public key constructed from the encodedKey.
*/
private static final PublicKey constructPublicKey(byte[] encodedKey,
String encodedKeyAlgorithm)
throws InvalidKeyException, NoSuchAlgorithmException
{
PublicKey key = null;
try {
KeyFactory keyFactory =
KeyFactory.getInstance(encodedKeyAlgorithm, "SunJCE");
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encodedKey);
key = keyFactory.generatePublic(keySpec);
} catch (NoSuchAlgorithmException nsae) {
// Try to see whether there is another
// provider which supports this algorithm
try {
KeyFactory keyFactory =
KeyFactory.getInstance(encodedKeyAlgorithm);
X509EncodedKeySpec keySpec =
new X509EncodedKeySpec(encodedKey);
key = keyFactory.generatePublic(keySpec);
} catch (NoSuchAlgorithmException nsae2) {
throw new NoSuchAlgorithmException("No installed providers " +
"can create keys for the " +
encodedKeyAlgorithm +
"algorithm");
} catch (InvalidKeySpecException ikse2) {
InvalidKeyException ike =
new InvalidKeyException("Cannot construct public key");
ike.initCause(ikse2);
throw ike;
}
} catch (InvalidKeySpecException ikse) {
InvalidKeyException ike =
new InvalidKeyException("Cannot construct public key");
ike.initCause(ikse);
throw ike;
} catch (NoSuchProviderException nspe) {
// Should never happen.
}
return key;
}
/**
* Construct a private key from its encoding.
*
* @param encodedKey the encoding of a private key.
*
* @param encodedKeyAlgorithm the algorithm the wrapped key is for.
*
* @return a private key constructed from the encodedKey.
*/
private static final PrivateKey constructPrivateKey(byte[] encodedKey,
String encodedKeyAlgorithm)
throws InvalidKeyException, NoSuchAlgorithmException
{
PrivateKey key = null;
try {
KeyFactory keyFactory =
KeyFactory.getInstance(encodedKeyAlgorithm, "SunJCE");
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey);
return keyFactory.generatePrivate(keySpec);
} catch (NoSuchAlgorithmException nsae) {
// Try to see whether there is another
// provider which supports this algorithm
try {
KeyFactory keyFactory =
KeyFactory.getInstance(encodedKeyAlgorithm);
PKCS8EncodedKeySpec keySpec =
new PKCS8EncodedKeySpec(encodedKey);
key = keyFactory.generatePrivate(keySpec);
} catch (NoSuchAlgorithmException nsae2) {
throw new NoSuchAlgorithmException("No installed providers " +
"can create keys for the " +
encodedKeyAlgorithm +
"algorithm");
} catch (InvalidKeySpecException ikse2) {
InvalidKeyException ike =
new InvalidKeyException("Cannot construct private key");
ike.initCause(ikse2);
throw ike;
}
} catch (InvalidKeySpecException ikse) {
InvalidKeyException ike =
new InvalidKeyException("Cannot construct private key");
ike.initCause(ikse);
throw ike;
} catch (NoSuchProviderException nspe) {
// Should never happen.
}
return key;
}
/**
* Construct a secret key from its encoding.
*
* @param encodedKey the encoding of a secret key.
*
* @param encodedKeyAlgorithm the algorithm the secret key is for.
*
* @return a secret key constructed from the encodedKey.
*/
private static final SecretKey constructSecretKey(byte[] encodedKey,
String encodedKeyAlgorithm)
{
return (new SecretKeySpec(encodedKey, encodedKeyAlgorithm));
}
static final Key constructKey(byte[] encoding, String keyAlgorithm,
int keyType)
throws InvalidKeyException, NoSuchAlgorithmException {
Key result = null;
switch (keyType) {
case Cipher.SECRET_KEY:
result = ConstructKeys.constructSecretKey(encoding,
keyAlgorithm);
break;
case Cipher.PRIVATE_KEY:
result = ConstructKeys.constructPrivateKey(encoding,
keyAlgorithm);
break;
case Cipher.PUBLIC_KEY:
result = ConstructKeys.constructPublicKey(encoding,
keyAlgorithm);
break;
}
return result;
}
}