| /* |
| * Copyright (c) 2003, 2021, 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 |
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| * questions. |
| */ |
| |
| package sun.security.pkcs11; |
| |
| import java.security.*; |
| import java.security.spec.*; |
| |
| import sun.security.pkcs11.wrapper.PKCS11Exception; |
| |
| /** |
| * KeyFactory base class. Provides common infrastructure for the RSA, DSA, |
| * and DH implementations. |
| * |
| * The subclasses support conversion between keys and keyspecs |
| * using X.509, PKCS#8, and their individual algorithm specific formats, |
| * assuming keys are extractable. |
| * |
| * @author Andreas Sterbenz |
| * @since 1.5 |
| */ |
| abstract class P11KeyFactory extends KeyFactorySpi { |
| |
| // token instance |
| final Token token; |
| |
| // algorithm name, currently one of RSA, DSA, DH |
| final String algorithm; |
| |
| P11KeyFactory(Token token, String algorithm) { |
| super(); |
| this.token = token; |
| this.algorithm = algorithm; |
| } |
| |
| /** |
| * Convert an arbitrary key of algorithm into a P11Key of token. |
| * Used by P11Signature.init() and RSACipher.init(). |
| */ |
| static P11Key convertKey(Token token, Key key, String algorithm) |
| throws InvalidKeyException { |
| return (P11Key)token.getKeyFactory(algorithm).engineTranslateKey(key); |
| } |
| |
| // see JCA spec |
| protected final <T extends KeySpec> T engineGetKeySpec(Key key, Class<T> keySpec) |
| throws InvalidKeySpecException { |
| token.ensureValid(); |
| if ((key == null) || (keySpec == null)) { |
| throw new InvalidKeySpecException |
| ("key and keySpec must not be null"); |
| } |
| // delegate to our Java based providers for PKCS#8 and X.509 |
| if (keySpec.isAssignableFrom(PKCS8EncodedKeySpec.class) |
| || keySpec.isAssignableFrom(X509EncodedKeySpec.class)) { |
| try { |
| return implGetSoftwareFactory().getKeySpec(key, keySpec); |
| } catch (GeneralSecurityException e) { |
| throw new InvalidKeySpecException("Could not encode key", e); |
| } |
| } |
| // first translate into a key of this token, if it is not already |
| P11Key p11Key; |
| try { |
| p11Key = (P11Key)engineTranslateKey(key); |
| } catch (InvalidKeyException e) { |
| throw new InvalidKeySpecException("Could not convert key", e); |
| } |
| Session[] session = new Session[1]; |
| try { |
| if (p11Key.isPublic()) { |
| return implGetPublicKeySpec(p11Key, keySpec, session); |
| } else { |
| return implGetPrivateKeySpec(p11Key, keySpec, session); |
| } |
| } catch (PKCS11Exception e) { |
| throw new InvalidKeySpecException("Could not generate KeySpec", e); |
| } finally { |
| session[0] = token.releaseSession(session[0]); |
| } |
| } |
| |
| // see JCA spec |
| protected final Key engineTranslateKey(Key key) throws InvalidKeyException { |
| token.ensureValid(); |
| if (key == null) { |
| throw new InvalidKeyException("Key must not be null"); |
| } |
| if (key.getAlgorithm().equals(this.algorithm) == false) { |
| throw new InvalidKeyException |
| ("Key algorithm must be " + algorithm); |
| } |
| if (key instanceof P11Key) { |
| P11Key p11Key = (P11Key)key; |
| if (p11Key.token == token) { |
| // already a key of this token, no need to translate |
| return key; |
| } |
| } |
| P11Key p11Key = token.privateCache.get(key); |
| if (p11Key != null) { |
| return p11Key; |
| } |
| if (key instanceof PublicKey) { |
| PublicKey publicKey = implTranslatePublicKey((PublicKey)key); |
| token.privateCache.put(key, (P11Key)publicKey); |
| return publicKey; |
| } else if (key instanceof PrivateKey) { |
| PrivateKey privateKey = implTranslatePrivateKey((PrivateKey)key); |
| token.privateCache.put(key, (P11Key)privateKey); |
| return privateKey; |
| } else { |
| throw new InvalidKeyException |
| ("Key must be instance of PublicKey or PrivateKey"); |
| } |
| } |
| |
| abstract <T extends KeySpec> T implGetPublicKeySpec(P11Key key, Class<T> keySpec, |
| Session[] session) throws PKCS11Exception, InvalidKeySpecException; |
| |
| abstract <T extends KeySpec> T implGetPrivateKeySpec(P11Key key, Class<T> keySpec, |
| Session[] session) throws PKCS11Exception, InvalidKeySpecException; |
| |
| abstract PublicKey implTranslatePublicKey(PublicKey key) |
| throws InvalidKeyException; |
| |
| abstract PrivateKey implTranslatePrivateKey(PrivateKey key) |
| throws InvalidKeyException; |
| |
| abstract KeyFactory implGetSoftwareFactory() throws GeneralSecurityException; |
| |
| } |