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/* * Copyright (c) 2003, 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 sun.security.pkcs11; import java.math.BigInteger; import java.security.*;import java.security.interfaces.*;import java.security.spec.*; import static sun.security.pkcs11.TemplateManager.*;import sun.security.pkcs11.wrapper.*;import static sun.security.pkcs11.wrapper.PKCS11Constants.*; /** * DSA KeyFactory implemenation. * * @author  Andreas Sterbenz * @since   1.5 */final class P11DSAKeyFactory extends P11KeyFactory {     P11DSAKeyFactory(Token token, String algorithm) {        super(token, algorithm);    }     PublicKey implTranslatePublicKey(PublicKey key) throws InvalidKeyException {        try {            if (key instanceof DSAPublicKey) {                DSAPublicKey dsaKey = (DSAPublicKey)key;                DSAParams params = dsaKey.getParams();                return generatePublic(                    dsaKey.getY(),                    params.getP(),                    params.getQ(),                    params.getG()                );            } else if ("X.509".equals(key.getFormat())) {                // let Sun provider parse for us, then recurse                byte[] encoded = key.getEncoded();                key = new sun.security.provider.DSAPublicKey(encoded);                return implTranslatePublicKey(key);            } else {                throw new InvalidKeyException("PublicKey must be instance "                        + "of DSAPublicKey or have X.509 encoding");            }        } catch (PKCS11Exception e) {            throw new InvalidKeyException("Could not create DSA public key", e);        }    }     PrivateKey implTranslatePrivateKey(PrivateKey key)            throws InvalidKeyException {        try {            if (key instanceof DSAPrivateKey) {                DSAPrivateKey dsaKey = (DSAPrivateKey)key;                DSAParams params = dsaKey.getParams();                return generatePrivate(                    dsaKey.getX(),                    params.getP(),                    params.getQ(),                    params.getG()                );            } else if ("PKCS#8".equals(key.getFormat())) {                // let Sun provider parse for us, then recurse                byte[] encoded = key.getEncoded();                key = new sun.security.provider.DSAPrivateKey(encoded);                return implTranslatePrivateKey(key);            } else {                throw new InvalidKeyException("PrivateKey must be instance "                        + "of DSAPrivateKey or have PKCS#8 encoding");            }        } catch (PKCS11Exception e) {            throw new InvalidKeyException("Could not create DSA private key", e);        }    }     // see JCA spec    protected PublicKey engineGeneratePublic(KeySpec keySpec)            throws InvalidKeySpecException {        token.ensureValid();        if (keySpec instanceof X509EncodedKeySpec) {            try {                byte[] encoded = ((X509EncodedKeySpec)keySpec).getEncoded();                PublicKey key = new sun.security.provider.DSAPublicKey(encoded);                return implTranslatePublicKey(key);            } catch (InvalidKeyException e) {                throw new InvalidKeySpecException                        ("Could not create DSA public key", e);            }        }        if (keySpec instanceof DSAPublicKeySpec == false) {            throw new InvalidKeySpecException("Only DSAPublicKeySpec and "                + "X509EncodedKeySpec supported for DSA public keys");        }        try {            DSAPublicKeySpec ds = (DSAPublicKeySpec)keySpec;            return generatePublic(                ds.getY(),                ds.getP(),                ds.getQ(),                ds.getG()            );        } catch (PKCS11Exception e) {            throw new InvalidKeySpecException                ("Could not create DSA public key", e);        }    }     // see JCA spec    protected PrivateKey engineGeneratePrivate(KeySpec keySpec)            throws InvalidKeySpecException {        token.ensureValid();        if (keySpec instanceof PKCS8EncodedKeySpec) {            try {                byte[] encoded = ((PKCS8EncodedKeySpec)keySpec).getEncoded();                PrivateKey key = new sun.security.provider.DSAPrivateKey(encoded);                return implTranslatePrivateKey(key);            } catch (GeneralSecurityException e) {                throw new InvalidKeySpecException                        ("Could not create DSA private key", e);            }        }        if (keySpec instanceof DSAPrivateKeySpec == false) {            throw new InvalidKeySpecException("Only DSAPrivateKeySpec and "                + "PKCS8EncodedKeySpec supported for DSA private keys");        }        try {            DSAPrivateKeySpec ds = (DSAPrivateKeySpec)keySpec;            return generatePrivate(                ds.getX(),                ds.getP(),                ds.getQ(),                ds.getG()            );        } catch (PKCS11Exception e) {            throw new InvalidKeySpecException                ("Could not create DSA private key", e);        }    }     private PublicKey generatePublic(BigInteger y, BigInteger p, BigInteger q,            BigInteger g) throws PKCS11Exception {        CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {            new CK_ATTRIBUTE(CKA_CLASS, CKO_PUBLIC_KEY),            new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_DSA),            new CK_ATTRIBUTE(CKA_VALUE, y),            new CK_ATTRIBUTE(CKA_PRIME, p),            new CK_ATTRIBUTE(CKA_SUBPRIME, q),            new CK_ATTRIBUTE(CKA_BASE, g),        };        attributes = token.getAttributes                (O_IMPORT, CKO_PUBLIC_KEY, CKK_DSA, attributes);        Session session = null;        try {            session = token.getObjSession();            long keyID = token.p11.C_CreateObject(session.id(), attributes);            return P11Key.publicKey                (session, keyID, "DSA", p.bitLength(), attributes);        } finally {            token.releaseSession(session);        }    }     private PrivateKey generatePrivate(BigInteger x, BigInteger p,            BigInteger q, BigInteger g) throws PKCS11Exception {        CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {            new CK_ATTRIBUTE(CKA_CLASS, CKO_PRIVATE_KEY),            new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_DSA),            new CK_ATTRIBUTE(CKA_VALUE, x),            new CK_ATTRIBUTE(CKA_PRIME, p),            new CK_ATTRIBUTE(CKA_SUBPRIME, q),            new CK_ATTRIBUTE(CKA_BASE, g),        };        attributes = token.getAttributes                (O_IMPORT, CKO_PRIVATE_KEY, CKK_DSA, attributes);        Session session = null;        try {            session = token.getObjSession();            long keyID = token.p11.C_CreateObject(session.id(), attributes);            return P11Key.privateKey                (session, keyID, "DSA", p.bitLength(), attributes);        } finally {            token.releaseSession(session);        }    }     KeySpec implGetPublicKeySpec(P11Key key, Class keySpec, Session[] session)            throws PKCS11Exception, InvalidKeySpecException {        if (DSAPublicKeySpec.class.isAssignableFrom(keySpec)) {            session[0] = token.getObjSession();            CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {                new CK_ATTRIBUTE(CKA_VALUE),                new CK_ATTRIBUTE(CKA_PRIME),                new CK_ATTRIBUTE(CKA_SUBPRIME),                new CK_ATTRIBUTE(CKA_BASE),            };            token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes);            KeySpec spec = new DSAPublicKeySpec(                attributes[0].getBigInteger(),                attributes[1].getBigInteger(),                attributes[2].getBigInteger(),                attributes[3].getBigInteger()            );            return spec;        } else { // X.509 handled in superclass            throw new InvalidKeySpecException("Only DSAPublicKeySpec and "                + "X509EncodedKeySpec supported for DSA public keys");        }    }     KeySpec implGetPrivateKeySpec(P11Key key, Class keySpec, Session[] session)            throws PKCS11Exception, InvalidKeySpecException {        if (DSAPrivateKeySpec.class.isAssignableFrom(keySpec)) {            session[0] = token.getObjSession();            CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {                new CK_ATTRIBUTE(CKA_VALUE),                new CK_ATTRIBUTE(CKA_PRIME),                new CK_ATTRIBUTE(CKA_SUBPRIME),                new CK_ATTRIBUTE(CKA_BASE),            };            token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes);            KeySpec spec = new DSAPrivateKeySpec(                attributes[0].getBigInteger(),                attributes[1].getBigInteger(),                attributes[2].getBigInteger(),                attributes[3].getBigInteger()            );            return spec;        } else { // PKCS#8 handled in superclass            throw new InvalidKeySpecException("Only DSAPrivateKeySpec "                + "and PKCS8EncodedKeySpec supported for DSA private keys");        }    }     KeyFactory implGetSoftwareFactory() throws GeneralSecurityException {        return KeyFactory.getInstance("DSA", P11Util.getSunProvider());    } }