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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/security/jce/sig/EncodedKeyFactory.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/security/jce/sig/EncodedKeyFactory.java')
-rw-r--r-- | libjava/classpath/gnu/java/security/jce/sig/EncodedKeyFactory.java | 430 |
1 files changed, 430 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/security/jce/sig/EncodedKeyFactory.java b/libjava/classpath/gnu/java/security/jce/sig/EncodedKeyFactory.java new file mode 100644 index 000000000..19ec088c5 --- /dev/null +++ b/libjava/classpath/gnu/java/security/jce/sig/EncodedKeyFactory.java @@ -0,0 +1,430 @@ +/* EncodedKeyFactory.java -- JCE Encoded key factory Adapter + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.security.jce.sig; + +import gnu.java.security.Configuration; +import gnu.java.security.Registry; +import gnu.java.security.key.dss.DSSPrivateKey; +import gnu.java.security.key.dss.DSSPublicKey; +import gnu.java.security.key.rsa.GnuRSAPrivateKey; +import gnu.java.security.key.rsa.GnuRSAPublicKey; + +import java.lang.reflect.Constructor; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.math.BigInteger; +import java.security.InvalidKeyException; +import java.security.InvalidParameterException; +import java.security.Key; +import java.security.KeyFactorySpi; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.security.spec.DSAPrivateKeySpec; +import java.security.spec.DSAPublicKeySpec; +import java.security.spec.InvalidKeySpecException; +import java.security.spec.KeySpec; +import java.security.spec.PKCS8EncodedKeySpec; +import java.security.spec.RSAPrivateCrtKeySpec; +import java.security.spec.RSAPublicKeySpec; +import java.security.spec.X509EncodedKeySpec; +import java.util.logging.Level; +import java.util.logging.Logger; + +import javax.crypto.interfaces.DHPrivateKey; +import javax.crypto.interfaces.DHPublicKey; +import javax.crypto.spec.DHPrivateKeySpec; +import javax.crypto.spec.DHPublicKeySpec; + +/** + * A factory for keys encoded in either the X.509 format (for public keys) or + * the PKCS#8 format (for private keys). + */ +public class EncodedKeyFactory + extends KeyFactorySpi +{ + private static final Logger log = Logger.getLogger(EncodedKeyFactory.class.getName()); + + private static Object invokeConstructor(String className, Object[] params) + throws InvalidKeySpecException + { + Class clazz = getConcreteClass(className); + try + { + Constructor ctor = getConcreteCtor(clazz); + Object result = ctor.newInstance(params); + return result; + } + catch (InstantiationException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + catch (IllegalAccessException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + catch (InvocationTargetException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + } + + private static Class getConcreteClass(String className) + throws InvalidKeySpecException + { + try + { + Class result = Class.forName(className); + return result; + } + catch (ClassNotFoundException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + } + + private static Constructor getConcreteCtor(Class clazz) + throws InvalidKeySpecException + { + try + { + Constructor result = clazz.getConstructor(new Class[] {int.class, + BigInteger.class, + BigInteger.class, + BigInteger.class, + BigInteger.class}); + return result; + } + catch (NoSuchMethodException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + } + + private static Object invokeValueOf(String className, byte[] encoded) + throws InvalidKeySpecException + { + Class clazz = getConcreteClass(className); + try + { + Method valueOf = getValueOfMethod(clazz); + Object result = valueOf.invoke(null, new Object[] { encoded }); + return result; + } + catch (IllegalAccessException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + catch (InvocationTargetException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + } + + private static Method getValueOfMethod(Class clazz) + throws InvalidKeySpecException + { + try + { + Method result = clazz.getMethod("valueOf", new Class[] {byte[].class}); + return result; + } + catch (NoSuchMethodException x) + { + throw new InvalidKeySpecException(x.getMessage(), x); + } + } + + protected PublicKey engineGeneratePublic(KeySpec keySpec) + throws InvalidKeySpecException + { + if (Configuration.DEBUG) + log.entering(this.getClass().getName(), "engineGeneratePublic()", keySpec); + PublicKey result = null; + if (keySpec instanceof DSAPublicKeySpec) + result = decodeDSSPublicKey((DSAPublicKeySpec) keySpec); + else if (keySpec instanceof RSAPublicKeySpec) + result = decodeRSAPublicKey((RSAPublicKeySpec) keySpec); + else if (keySpec instanceof DHPublicKeySpec) + result = decodeDHPublicKey((DHPublicKeySpec) keySpec); + else + { + if (! (keySpec instanceof X509EncodedKeySpec)) + throw new InvalidKeySpecException("Unsupported key specification"); + + byte[] input = ((X509EncodedKeySpec) keySpec).getEncoded(); + boolean ok = false; + // try DSS + try + { + result = DSSPublicKey.valueOf(input); + ok = true; + } + catch (InvalidParameterException ignored) + { + if (Configuration.DEBUG) + log.log(Level.FINE, "Exception in DSSPublicKey.valueOf(). Ignore", + ignored); + } + if (! ok) // try RSA + try + { + result = GnuRSAPublicKey.valueOf(input); + ok = true; + } + catch (InvalidParameterException ignored) + { + if (Configuration.DEBUG) + log.log(Level.FINE, + "Exception in GnuRSAPublicKey.valueOf(). Ignore", + ignored); + } + if (! ok) // try DH + result = decodeDHPublicKey(input); + } + if (Configuration.DEBUG) + log.exiting(this.getClass().getName(), "engineGeneratePublic()", result); + return result; + } + + protected PrivateKey engineGeneratePrivate(KeySpec keySpec) + throws InvalidKeySpecException + { + if (Configuration.DEBUG) + log.entering(this.getClass().getName(), "engineGeneratePrivate()", keySpec); + PrivateKey result = null; + if (keySpec instanceof DSAPrivateKeySpec) + result = decodeDSSPrivateKey((DSAPrivateKeySpec) keySpec); + else if (keySpec instanceof RSAPrivateCrtKeySpec) + result = decodeRSAPrivateKey((RSAPrivateCrtKeySpec) keySpec); + else if (keySpec instanceof DHPrivateKeySpec) + result = decodeDHPrivateKey((DHPrivateKeySpec) keySpec); + else + { + if (! (keySpec instanceof PKCS8EncodedKeySpec)) + throw new InvalidKeySpecException("Unsupported key specification"); + + byte[] input = ((PKCS8EncodedKeySpec) keySpec).getEncoded(); + boolean ok = false; + // try DSS + try + { + result = DSSPrivateKey.valueOf(input); + ok = true; + } + catch (InvalidParameterException ignored) + { + if (Configuration.DEBUG) + log.log(Level.FINE, "Exception in DSSPrivateKey.valueOf(). Ignore", + ignored); + } + if (! ok) // try RSA + try + { + result = GnuRSAPrivateKey.valueOf(input); + ok = true; + } + catch (InvalidParameterException ignored) + { + if (Configuration.DEBUG) + log.log(Level.FINE, + "Exception in GnuRSAPrivateKey.valueOf(). Ignore", + ignored); + } + if (! ok) // try DH + result = decodeDHPrivateKey(input); + } + if (Configuration.DEBUG) + log.exiting(this.getClass().getName(), "engineGeneratePrivate()", result); + return result; + } + + protected KeySpec engineGetKeySpec(Key key, Class keySpec) + throws InvalidKeySpecException + { + if (key instanceof PublicKey + && Registry.X509_ENCODING_SORT_NAME.equalsIgnoreCase(key.getFormat()) + && keySpec.isAssignableFrom(X509EncodedKeySpec.class)) + return new X509EncodedKeySpec(key.getEncoded()); + + if (key instanceof PrivateKey + && Registry.PKCS8_ENCODING_SHORT_NAME.equalsIgnoreCase(key.getFormat()) + && keySpec.isAssignableFrom(PKCS8EncodedKeySpec.class)) + return new PKCS8EncodedKeySpec(key.getEncoded()); + + throw new InvalidKeySpecException("Unsupported format or invalid key spec class"); + } + + protected Key engineTranslateKey(Key key) throws InvalidKeyException + { + throw new InvalidKeyException("Key translation not supported"); + } + + /** + * @param spec an instance of {@link DSAPublicKeySpec} to decode. + * @return an instance of {@link DSSPublicKey} constructed from the + * information in the designated key-specification. + */ + private DSSPublicKey decodeDSSPublicKey(DSAPublicKeySpec spec) + { + BigInteger p = spec.getP(); + BigInteger q = spec.getQ(); + BigInteger g = spec.getG(); + BigInteger y = spec.getY(); + return new DSSPublicKey(Registry.X509_ENCODING_ID, p, q, g, y); + } + + /** + * @param spec an instance of {@link RSAPublicKeySpec} to decode. + * @return an instance of {@link GnuRSAPublicKey} constructed from the + * information in the designated key-specification. + */ + private GnuRSAPublicKey decodeRSAPublicKey(RSAPublicKeySpec spec) + { + BigInteger n = spec.getModulus(); + BigInteger e = spec.getPublicExponent(); + return new GnuRSAPublicKey(Registry.X509_ENCODING_ID, n, e); + } + + /** + * @param spec an instance of {@link DHPublicKeySpec} to decode. + * @return an instance of a {@link DHPublicKey} constructed from the + * information in the designated key-specification. + * @throws InvalidKeySpecException if no concrete implementation of the + * {@link DHPublicKey} interface exists at run-time, or if an + * exception occurs during its instantiation. + */ + private DHPublicKey decodeDHPublicKey(DHPublicKeySpec spec) + throws InvalidKeySpecException + { + BigInteger p = spec.getP(); + BigInteger g = spec.getG(); + BigInteger y = spec.getY(); + Object[] params = new Object[] {Integer.valueOf(Registry.X509_ENCODING_ID), + null, p, g, y}; + Object obj = invokeConstructor("gnu.javax.crypto.key.dh.GnuDHPublicKey", + params); + return (DHPublicKey) obj; + } + + /** + * @param encoded the bytes to decode. + * @return an instance of a {@link DHPublicKey} constructed from the + * information in the designated key-specification. + * @throws InvalidKeySpecException if no concrete implementation of the + * {@link DHPublicKey} interface exists at run-time, or if an + * exception occurs during its instantiation. + */ + private DHPublicKey decodeDHPublicKey(byte[] encoded) + throws InvalidKeySpecException + { + Object obj = invokeValueOf("gnu.javax.crypto.key.dh.GnuDHPublicKey", + encoded); + return (DHPublicKey) obj; + } + + /** + * @param spec an instance of {@link DSAPrivateKeySpec} to decode. + * @return an instance of {@link DSSPrivateKey} constructed from the + * information in the designated key-specification. + */ + private PrivateKey decodeDSSPrivateKey(DSAPrivateKeySpec spec) + { + BigInteger p = spec.getP(); + BigInteger q = spec.getQ(); + BigInteger g = spec.getG(); + BigInteger x = spec.getX(); + return new DSSPrivateKey(Registry.PKCS8_ENCODING_ID, p, q, g, x); + } + + /** + * @param spec an instance of {@link RSAPrivateCrtKeySpec} to decode. + * @return an instance of {@link GnuRSAPrivateKey} constructed from the + * information in the designated key-specification. + */ + private PrivateKey decodeRSAPrivateKey(RSAPrivateCrtKeySpec spec) + { + BigInteger n = spec.getModulus(); + BigInteger e = spec.getPublicExponent(); + BigInteger d = spec.getPrivateExponent(); + BigInteger p = spec.getPrimeP(); + BigInteger q = spec.getPrimeQ(); + BigInteger dP = spec.getPrimeExponentP(); + BigInteger dQ = spec.getPrimeExponentQ(); + BigInteger qInv = spec.getCrtCoefficient(); + return new GnuRSAPrivateKey(Registry.PKCS8_ENCODING_ID, + n, e, d, p, q, dP, dQ, qInv); + } + + /** + * @param spec an instance of {@link DHPrivateKeySpec} to decode. + * @return an instance of a {@link DHPrivateKey} constructed from the + * information in the designated key-specification. + * @throws InvalidKeySpecException if no concrete implementation of the + * {@link DHPrivateKey} interface exists at run-time, or if an + * exception occurs during its instantiation. + */ + private DHPrivateKey decodeDHPrivateKey(DHPrivateKeySpec spec) + throws InvalidKeySpecException + { + BigInteger p = spec.getP(); + BigInteger g = spec.getG(); + BigInteger x = spec.getX(); + Object[] params = new Object[] {Integer.valueOf(Registry.PKCS8_ENCODING_ID), + null, p, g, x}; + Object obj = invokeConstructor("gnu.javax.crypto.key.dh.GnuDHPrivateKey", + params); + return (DHPrivateKey) obj; + } + + /** + * @param encoded the bytes to decode. + * @return an instance of a {@link DHPrivateKey} constructed from the + * information in the designated key-specification. + * @throws InvalidKeySpecException if no concrete implementation of the + * {@link DHPrivateKey} interface exists at run-time, or if an + * exception occurs during its instantiation. + */ + private DHPrivateKey decodeDHPrivateKey(byte[] encoded) + throws InvalidKeySpecException + { + Object obj = invokeValueOf("gnu.javax.crypto.key.dh.GnuDHPrivateKey", + encoded); + return (DHPrivateKey) obj; + } +} |