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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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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());
}
}