From ce57ab760f69de6db452def7ffbf5b114a2d8694 Mon Sep 17 00:00:00 2001 From: mark Date: Fri, 10 Mar 2006 21:46:48 +0000 Subject: Imported GNU Classpath 0.90 * scripts/makemake.tcl: Set gnu/java/awt/peer/swing to ignore. * gnu/classpath/jdwp/VMFrame.java (SIZE): New constant. * java/lang/VMCompiler.java: Use gnu.java.security.hash.MD5. * java/lang/Math.java: New override file. * java/lang/Character.java: Merged from Classpath. (start, end): Now 'int's. (canonicalName): New field. (CANONICAL_NAME, NO_SPACES_NAME, CONSTANT_NAME): New constants. (UnicodeBlock): Added argument. (of): New overload. (forName): New method. Updated unicode blocks. (sets): Updated. * sources.am: Regenerated. * Makefile.in: Likewise. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@111942 138bc75d-0d04-0410-961f-82ee72b054a4 --- .../gnu/java/security/key/rsa/GnuRSAKey.java | 181 +++++++++++ .../java/security/key/rsa/GnuRSAPrivateKey.java | 299 +++++++++++++++++++ .../gnu/java/security/key/rsa/GnuRSAPublicKey.java | 185 ++++++++++++ .../java/security/key/rsa/RSAKeyPairGenerator.java | 264 ++++++++++++++++ .../security/key/rsa/RSAKeyPairPKCS8Codec.java | 284 ++++++++++++++++++ .../java/security/key/rsa/RSAKeyPairRawCodec.java | 332 +++++++++++++++++++++ .../java/security/key/rsa/RSAKeyPairX509Codec.java | 248 +++++++++++++++ 7 files changed, 1793 insertions(+) create mode 100644 libjava/classpath/gnu/java/security/key/rsa/GnuRSAKey.java create mode 100644 libjava/classpath/gnu/java/security/key/rsa/GnuRSAPrivateKey.java create mode 100644 libjava/classpath/gnu/java/security/key/rsa/GnuRSAPublicKey.java create mode 100644 libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairGenerator.java create mode 100644 libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairPKCS8Codec.java create mode 100644 libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java create mode 100644 libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairX509Codec.java (limited to 'libjava/classpath/gnu/java/security/key/rsa') diff --git a/libjava/classpath/gnu/java/security/key/rsa/GnuRSAKey.java b/libjava/classpath/gnu/java/security/key/rsa/GnuRSAKey.java new file mode 100644 index 00000000000..72cd808d43b --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/rsa/GnuRSAKey.java @@ -0,0 +1,181 @@ +/* GnuRSAKey.java -- + Copyright 2001, 2002, 2003, 2006 Free Software Foundation, Inc. + +This file is a 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 of the License, 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; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, 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.key.rsa; + +import gnu.java.security.Registry; +import gnu.java.security.key.IKeyPairCodec; +import gnu.java.security.util.FormatUtil; + +import java.math.BigInteger; +import java.security.Key; +import java.security.interfaces.RSAKey; + +/** + *

A base asbtract class for both public and private RSA keys.

+ * + * @version $Revision: 1.3 $ + */ +public abstract class GnuRSAKey implements Key, RSAKey +{ + + // Constants and variables + // ------------------------------------------------------------------------- + + /** The public modulus of an RSA key pair. */ + private final BigInteger n; + + /** The public exponent of an RSA key pair. */ + private final BigInteger e; + + /** + * Identifier of the default encoding format to use when externalizing the + * key material. + */ + protected final int defaultFormat; + + // Constructor(s) + // ------------------------------------------------------------------------- + + /** + * Trivial protected constructor. + * + * @param defaultFormat the identifier of the encoding format to use by + * default when externalizing the key. + * @param n the public modulus n. + * @param e the public exponent e. + */ + protected GnuRSAKey(int defaultFormat, BigInteger n, BigInteger e) + { + super(); + + this.defaultFormat = defaultFormat <= 0 ? Registry.RAW_ENCODING_ID + : defaultFormat; + this.n = n; + this.e = e; + } + + // Class methods + // ------------------------------------------------------------------------- + + // Instance methods + // ------------------------------------------------------------------------- + + // java.security.interfaces.RSAKey interface implementation ---------------- + + public BigInteger getModulus() + { + return getN(); + } + + // java.security.Key interface implementation ------------------------------ + + public String getAlgorithm() + { + return Registry.RSA_KPG; + } + + /** @deprecated see getEncoded(int). */ + public byte[] getEncoded() + { + return getEncoded(IKeyPairCodec.RAW_FORMAT); + } + + public String getFormat() + { + return FormatUtil.getEncodingShortName(defaultFormat); + } + + // Other instance methods -------------------------------------------------- + + /** + *

Returns the modulus n.

+ * + * @return the modulus n. + */ + public BigInteger getN() + { + return n; + } + + /** + *

Returns the public exponent e.

+ * + * @return the public exponent e. + */ + public BigInteger getPublicExponent() + { + return getE(); + } + + /** + *

Same as {@link #getPublicExponent()}.

+ * + * @return the public exponent e. + */ + public BigInteger getE() + { + return e; + } + + /** + *

Returns true if the designated object is an instance of + * {@link RSAKey} and has the same RSA parameter values as this one.

+ * + * @param obj the other non-null RSA key to compare to. + * @return true if the designated object is of the same type and + * value as this one. + */ + public boolean equals(final Object obj) + { + if (obj == null) + { + return false; + } + if (!(obj instanceof RSAKey)) + { + return false; + } + final RSAKey that = (RSAKey) obj; + return n.equals(that.getModulus()); + } + + // abstract methods to be implemented by subclasses ------------------------ + + public abstract byte[] getEncoded(int format); +} diff --git a/libjava/classpath/gnu/java/security/key/rsa/GnuRSAPrivateKey.java b/libjava/classpath/gnu/java/security/key/rsa/GnuRSAPrivateKey.java new file mode 100644 index 00000000000..f8acaa50df7 --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/rsa/GnuRSAPrivateKey.java @@ -0,0 +1,299 @@ +/* GnuRSAPrivateKey.java -- + Copyright 2001, 2002, 2003, 2006 Free Software Foundation, Inc. + +This file is a 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 of the License, 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; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, 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.key.rsa; + +import gnu.java.security.Registry; +import gnu.java.security.key.IKeyPairCodec; + +import java.math.BigInteger; +import java.security.PrivateKey; +import java.security.interfaces.RSAPrivateCrtKey; +import java.security.interfaces.RSAPrivateKey; + +/** + *

An object that embodies an RSA private key.

+ * + *

References:

+ *
    + *
  1. + * RSA-PSS Signature Scheme with Appendix, part B.
    + * Primitive specification and supporting documentation.
    + * Jakob Jonsson and Burt Kaliski.
    2. + *
+ * + * @version $Revision: 1.3 $ + */ +public class GnuRSAPrivateKey extends GnuRSAKey implements PrivateKey, + RSAPrivateCrtKey +{ + + // Constants and variables + // ------------------------------------------------------------------------- + + /** The first prime divisor of the modulus. */ + private final BigInteger p; + + /** The second prime divisor of the modulus. */ + private final BigInteger q; + + /** The public exponent of an RSA key. */ + // private final BigInteger e; + /** The private exponent of an RSA private key. */ + private final BigInteger d; + + /** The first factor's exponent. */ + private final BigInteger dP; + + /** The second factor's exponent. */ + private final BigInteger dQ; + + /** The CRT (Chinese Remainder Theorem) coefficient. */ + private final BigInteger qInv; + + // Constructor(s) + // ------------------------------------------------------------------------- + + /** + * Convenience constructor. Calls the constructor with 5 arguments passing + * {@link Registry#RAW_ENCODING_ID} as the identifier of the preferred + * encoding format. + * + * @param p the modulus first prime divisor. + * @param q the modulus second prime divisor. + * @param e the public exponent. + * @param d the private exponent. + */ + public GnuRSAPrivateKey(BigInteger p, BigInteger q, BigInteger e, + BigInteger d) + { + this(Registry.RAW_ENCODING_ID, p, q, e, d); + } + + /** + * Constructs a new instance of a GnuRSAPrivateKey given the + * designated arguments. + * + * @param preferredFormat the indetifier of the preferred encoding format to + * use when externalizing this key. + * @param p the modulus first prime divisor. + * @param q the modulus second prime divisor. + * @param e the public exponent. + * @param d the private exponent. + */ + public GnuRSAPrivateKey(int preferredFormat, BigInteger p, BigInteger q, + BigInteger e, BigInteger d) + { + this(preferredFormat, p.multiply(q), e, d, p, q, + e.modInverse(p.subtract(BigInteger.ONE)), + e.modInverse(q.subtract(BigInteger.ONE)), + q.modInverse(p)); + } + + /** + * Constructs a new instance of a GnuRSAPrivateKey given the + * designated arguments. + * + * @param preferredFormat the indetifier of the preferred encoding format to + * use when externalizing this key. + * @param n the public modulus, which is also the product of p + * and q. + * @param e the public exponent. + * @param d the private exponent. + * @param p the modulus first prime divisor. + * @param q the modulus second prime divisor. + * @param dP the first prime's exponen. A positive integer less than + * p and q, satisfying e * dP = 1 (mod p-1) + * . + * @param dQ the second prime's exponent. A positive integer less than + * p and q, satisfying e * dQ = 1 (mod p-1) + * . + * @param qInv the Chinese Remainder Theorem coefiicient. A positive integer + * less than p, satisfying q * qInv = 1 (mod p). + */ + public GnuRSAPrivateKey(int preferredFormat, BigInteger n, BigInteger e, + BigInteger d, BigInteger p, BigInteger q, + BigInteger dP, BigInteger dQ, BigInteger qInv) + { + super(preferredFormat == Registry.ASN1_ENCODING_ID ? Registry.PKCS8_ENCODING_ID + : preferredFormat, + n, e); + + this.d = d; + this.p = p; + this.q = q; + // the exponents dP and dQ are positive integers less than p and q + // respectively satisfying + // e * dP = 1 (mod p-1); + // e * dQ = 1 (mod q-1), + this.dP = dP; + this.dQ = dQ; + // the CRT coefficient qInv is a positive integer less than p satisfying + // q * qInv = 1 (mod p). + this.qInv = qInv; + } + + // Class methods + // ------------------------------------------------------------------------- + + /** + * A class method that takes the output of the encodePrivateKey() + * method of an RSA keypair codec object (an instance implementing + * {@link IKeyPairCodec} for RSA keys, and re-constructs an instance of this + * object. + * + * @param k the contents of a previously encoded instance of this object. + * @throws ArrayIndexOutOfBoundsException if there is not enough bytes, in + * k, to represent a valid encoding of an instance + * of this object. + * @throws IllegalArgumentException if the byte sequence does not represent a + * valid encoding of an instance of this object. + */ + public static GnuRSAPrivateKey valueOf(final byte[] k) + { + // try RAW codec + if (k[0] == Registry.MAGIC_RAW_RSA_PRIVATE_KEY[0]) + try + { + return (GnuRSAPrivateKey) new RSAKeyPairRawCodec().decodePrivateKey(k); + } + catch (IllegalArgumentException ignored) + { + } + + // try PKCS#8 codec + return (GnuRSAPrivateKey) new RSAKeyPairPKCS8Codec().decodePrivateKey(k); + } + + // Instance methods + // ------------------------------------------------------------------------- + + public BigInteger getPrimeP() + { + return p; + } + + public BigInteger getPrimeQ() + { + return q; + } + + public BigInteger getPrimeExponentP() + { + return dP; + } + + public BigInteger getPrimeExponentQ() + { + return dQ; + } + + public BigInteger getCrtCoefficient() + { + return qInv; + } + + // java.security.interfaces.RSAPrivateKey interface implementation --------- + + public BigInteger getPrivateExponent() + { + return d; + } + + // Other instance methods -------------------------------------------------- + + /** + * Returns the encoded form of this private key according to the + * designated format. + * + * @param format the desired format identifier of the resulting encoding. + * @return the byte sequence encoding this key according to the designated + * format. + * @throws IllegalArgumentException if the format is not supported. + * @see RSAKeyPairRawCodec + * @see RSAKeyPairPKCS8Codec + */ + public byte[] getEncoded(int format) + { + final byte[] result; + switch (format) + { + case IKeyPairCodec.RAW_FORMAT: + result = new RSAKeyPairRawCodec().encodePrivateKey(this); + break; + case IKeyPairCodec.PKCS8_FORMAT: + result = new RSAKeyPairPKCS8Codec().encodePrivateKey(this); + break; + default: + throw new IllegalArgumentException("Unsupported encoding format: " + + format); + } + return result; + } + + /** + *

Returns true if the designated object is an instance of + * this class and has the same RSA parameter values as this one.

+ * + * @param obj the other non-null RSA key to compare to. + * @return true if the designated object is of the same type + * and value as this one. + */ + public boolean equals(final Object obj) + { + if (obj == null) + { + return false; + } + if (obj instanceof RSAPrivateKey) + { + final RSAPrivateKey that = (RSAPrivateKey) obj; + return super.equals(that) && d.equals(that.getPrivateExponent()); + } + if (obj instanceof RSAPrivateCrtKey) + { + final RSAPrivateCrtKey that = (RSAPrivateCrtKey) obj; + return super.equals(that) && p.equals(that.getPrimeP()) + && q.equals(that.getPrimeQ()) + && dP.equals(that.getPrimeExponentP()) + && dQ.equals(that.getPrimeExponentQ()) + && qInv.equals(that.getCrtCoefficient()); + } + return false; + } +} diff --git a/libjava/classpath/gnu/java/security/key/rsa/GnuRSAPublicKey.java b/libjava/classpath/gnu/java/security/key/rsa/GnuRSAPublicKey.java new file mode 100644 index 00000000000..f49027ca621 --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/rsa/GnuRSAPublicKey.java @@ -0,0 +1,185 @@ +/* GnuRSAPublicKey.java -- + Copyright 2001, 2002, 2003, 2006 Free Software Foundation, Inc. + +This file is a 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 of the License, 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; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, 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.key.rsa; + +import gnu.java.security.Registry; +import gnu.java.security.key.IKeyPairCodec; + +import java.math.BigInteger; +import java.security.PublicKey; +import java.security.interfaces.RSAPublicKey; + +/** + *

An object that encapsulates an RSA public key.

+ * + *

References:

+ *
    + *
  1. + * RSA-PSS Signature Scheme with Appendix, part B.
    + * Primitive specification and supporting documentation.
    + * Jakob Jonsson and Burt Kaliski.
    2. + *
+ * + * @version $Revision: 1.2 $ + */ +public class GnuRSAPublicKey extends GnuRSAKey implements PublicKey, + RSAPublicKey +{ + + // Constants and variables + // ------------------------------------------------------------------------- + + // Constructor(s) + // ------------------------------------------------------------------------- + + /** + * Conveience constructor. Calls the constructor with 3 arguments passing + * {@link Registry#RAW_ENCODING_ID} as the identifier of the preferred + * encoding format. + * + * @param n the modulus. + * @param e the public exponent. + */ + public GnuRSAPublicKey(final BigInteger n, final BigInteger e) + { + this(Registry.RAW_ENCODING_ID, n, e); + } + + /** + * Constructs a new instance of GnuRSAPublicKey given the + * designated arguments. + * + * @param preferredFormat the identifier of the preferred encoding format to + * use when externalizing this key. + * @param n the modulus. + * @param e the public exponent. + */ + public GnuRSAPublicKey(int preferredFormat, BigInteger n, BigInteger e) + { + super(preferredFormat == Registry.ASN1_ENCODING_ID ? Registry.X509_ENCODING_ID + : preferredFormat, + n, e); + } + + // Class methods + // ------------------------------------------------------------------------- + + /** + * A class method that takes the output of the encodePublicKey() + * method of an RSA keypair codec object (an instance implementing + * {@link IKeyPairCodec} for RSA keys, and re-constructs an instance of this + * object. + * + * @param k the contents of a previously encoded instance of this object. + * @throws ArrayIndexOutOfBoundsException if there is not enough bytes, in + * k, to represent a valid encoding of an instance + * of this object. + * @throws IllegalArgumentException if the byte sequence does not represent a + * valid encoding of an instance of this object. + */ + public static GnuRSAPublicKey valueOf(final byte[] k) + { + // try RAW codec + if (k[0] == Registry.MAGIC_RAW_RSA_PUBLIC_KEY[0]) + try + { + return (GnuRSAPublicKey) new RSAKeyPairRawCodec().decodePublicKey(k); + } + catch (IllegalArgumentException ignored) + { + } + + // try X.509 codec + return (GnuRSAPublicKey) new RSAKeyPairX509Codec().decodePublicKey(k); + } + + // Instance methods + // ------------------------------------------------------------------------- + + /** + *

Returns the encoded form of this public key according to the designated + * format.

+ * + * @param format the desired format identifier of the resulting encoding. + * @return the byte sequence encoding this key according to the designated + * format. + * @throws IllegalArgumentException if the format is not supported. + * @see RSAKeyPairRawCodec + */ + public byte[] getEncoded(final int format) + { + final byte[] result; + switch (format) + { + case IKeyPairCodec.RAW_FORMAT: + result = new RSAKeyPairRawCodec().encodePublicKey(this); + break; + case IKeyPairCodec.X509_FORMAT: + result = new RSAKeyPairX509Codec().encodePublicKey(this); + break; + default: + throw new IllegalArgumentException("Unsupported encoding format: " + + format); + } + return result; + } + + /** + *

Returns true if the designated object is an instance of + * this class and has the same RSA parameter values as this one.

+ * + * @param obj the other non-null RSA key to compare to. + * @return true if the designated object is of the same type and + * value as this one. + */ + public boolean equals(final Object obj) + { + if (obj == null) + { + return false; + } + if (!(obj instanceof RSAPublicKey)) + { + return false; + } + final RSAPublicKey that = (RSAPublicKey) obj; + return super.equals(that) + && getPublicExponent().equals(that.getPublicExponent()); + } +} diff --git a/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairGenerator.java b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairGenerator.java new file mode 100644 index 00000000000..9c7338f662a --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairGenerator.java @@ -0,0 +1,264 @@ +/* RSAKeyPairGenerator.java -- + Copyright 2001, 2002, 2003, 2006 Free Software Foundation, Inc. + +This file is a 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 of the License, 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; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, 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.key.rsa; + +import gnu.java.security.Registry; +import gnu.java.security.key.IKeyPairGenerator; +import gnu.java.security.util.PRNG; +import gnu.java.security.util.Prime2; + +import java.math.BigInteger; +import java.security.KeyPair; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.security.SecureRandom; +import java.security.spec.RSAKeyGenParameterSpec; +import java.util.Map; + +/** + *

A key-pair generator for asymetric keys to use in conjunction with the RSA + * scheme.

+ * + *

Reference:

+ *
    + *
  1. + * RSA-PSS Signature Scheme with Appendix, part B. Primitive + * specification and supporting documentation. Jakob Jonsson and Burt Kaliski. + *
    2. + *
  2. Handbook of Applied + * Cryptography, Alfred J. Menezes, Paul C. van Oorschot and Scott A. + * Vanstone. Section 11.3 RSA and related signature schemes.
    3. + *
+ */ +public class RSAKeyPairGenerator implements IKeyPairGenerator +{ + + // Constants and variables + // ------------------------------------------------------------------------- + + /** The BigInteger constant 1. */ + private static final BigInteger ONE = BigInteger.ONE; + + /** The BigInteger constant 2. */ + private static final BigInteger TWO = BigInteger.valueOf(2L); + + /** Property name of the length (Integer) of the modulus of an RSA key. */ + public static final String MODULUS_LENGTH = "gnu.crypto.rsa.L"; + + /** + * Property name of an optional {@link SecureRandom} instance to use. The + * default is to use a classloader singleton from {@link PRNG}. + */ + public static final String SOURCE_OF_RANDOMNESS = "gnu.crypto.rsa.prng"; + + /** + * Property name of an optional {@link RSAKeyGenParameterSpec} instance to + * use for this generator's n, and e values. The + * default is to generate n and use a fixed value for + * e (Fermat's F4 number). + */ + public static final String RSA_PARAMETERS = "gnu.crypto.rsa.params"; + + /** + * Property name of the preferred encoding format to use when externalizing + * generated instance of key-pairs from this generator. The property is taken + * to be an {@link Integer} that encapsulates an encoding format identifier. + */ + public static final String PREFERRED_ENCODING_FORMAT = "gnu.crypto.rsa.encoding"; + + /** Default value for the modulus length. */ + private static final int DEFAULT_MODULUS_LENGTH = 1024; + + /** Default encoding format to use when none was specified. */ + private static final int DEFAULT_ENCODING_FORMAT = Registry.RAW_ENCODING_ID; + + /** The desired bit length of the modulus. */ + private int L; + + /** + * This implementation uses, by default, Fermat's F4 number as the public + * exponent. + */ + private BigInteger e = BigInteger.valueOf(65537L); + + /** The optional {@link SecureRandom} instance to use. */ + private SecureRandom rnd = null; + + /** Our default source of randomness. */ + private PRNG prng = null; + + /** Preferred encoding format of generated keys. */ + private int preferredFormat; + + // Constructor(s) + // ------------------------------------------------------------------------- + + // implicit 0-arguments constructor + + // Class methods + // ------------------------------------------------------------------------- + + // gnu.crypto.key.IKeyPairGenerator interface implementation --------------- + + public String name() + { + return Registry.RSA_KPG; + } + + /** + *

Configures this instance.

+ * + * @param attributes the map of name/value pairs to use. + * @exception IllegalArgumentException if the designated MODULUS_LENGTH + * value is less than 1024. + */ + public void setup(Map attributes) + { + // do we have a SecureRandom, or should we use our own? + rnd = (SecureRandom) attributes.get(SOURCE_OF_RANDOMNESS); + + // are we given a set of RSA params or we shall use our own? + RSAKeyGenParameterSpec params = (RSAKeyGenParameterSpec) attributes.get(RSA_PARAMETERS); + + // find out the modulus length + if (params != null) + { + L = params.getKeysize(); + e = params.getPublicExponent(); + } + else + { + Integer l = (Integer) attributes.get(MODULUS_LENGTH); + L = (l == null ? DEFAULT_MODULUS_LENGTH : l.intValue()); + } + + if (L < 1024) + { + throw new IllegalArgumentException(MODULUS_LENGTH); + } + + // what is the preferred encoding format + Integer formatID = (Integer) attributes.get(PREFERRED_ENCODING_FORMAT); + preferredFormat = formatID == null ? DEFAULT_ENCODING_FORMAT + : formatID.intValue(); + } + + /** + *

The algorithm used here is described in nessie-pss-B.pdf + * document which is part of the RSA-PSS submission to NESSIE.

+ * + * @return an RSA keypair. + */ + public KeyPair generate() + { + BigInteger p, q, n, d; + + // 1. Generate a prime p in the interval [2**(M-1), 2**M - 1], where + // M = CEILING(L/2), and such that GCD(p, e) = 1 + int M = (L + 1) / 2; + BigInteger lower = TWO.pow(M - 1); + BigInteger upper = TWO.pow(M).subtract(ONE); + byte[] kb = new byte[(M + 7) / 8]; // enough bytes to frame M bits + step1: while (true) + { + nextRandomBytes(kb); + p = new BigInteger(1, kb).setBit(0); + if (p.compareTo(lower) >= 0 && p.compareTo(upper) <= 0 + && Prime2.isProbablePrime(p) && p.gcd(e).equals(ONE)) + { + break step1; + } + } + + // 2. Generate a prime q such that the product of p and q is an L-bit + // number, and such that GCD(q, e) = 1 + step2: while (true) + { + nextRandomBytes(kb); + q = new BigInteger(1, kb).setBit(0); + n = p.multiply(q); + if (n.bitLength() == L && Prime2.isProbablePrime(q) + && q.gcd(e).equals(ONE)) + { + break step2; + } + + // TODO: test for p != q + } + + // TODO: ensure p < q + + // 3. Put n = pq. The public key is (n, e). + // 4. Compute the parameters necessary for the private key K (see + // Section 2.2). + BigInteger phi = p.subtract(ONE).multiply(q.subtract(ONE)); + d = e.modInverse(phi); + + // 5. Output the public key and the private key. + PublicKey pubK = new GnuRSAPublicKey(preferredFormat, n, e); + PrivateKey secK = new GnuRSAPrivateKey(preferredFormat, p, q, e, d); + + return new KeyPair(pubK, secK); + } + + // helper methods ---------------------------------------------------------- + + /** + *

Fills the designated byte array with random data.

+ * + * @param buffer the byte array to fill with random data. + */ + private void nextRandomBytes(byte[] buffer) + { + if (rnd != null) + { + rnd.nextBytes(buffer); + } + else + getDefaultPRNG().nextBytes(buffer); + } + + private PRNG getDefaultPRNG() + { + if (prng == null) + prng = PRNG.getInstance(); + + return prng; + } +} diff --git a/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairPKCS8Codec.java b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairPKCS8Codec.java new file mode 100644 index 00000000000..a7f65b61012 --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairPKCS8Codec.java @@ -0,0 +1,284 @@ +/* RSAKeyPairPKCS8Codec.java -- PKCS#8 Encoding/Decoding handler + 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.key.rsa; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.math.BigInteger; +import java.security.InvalidParameterException; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.util.ArrayList; + +import gnu.java.security.OID; +import gnu.java.security.Registry; +import gnu.java.security.der.DER; +import gnu.java.security.der.DERReader; +import gnu.java.security.der.DERValue; +import gnu.java.security.der.DERWriter; +import gnu.java.security.key.IKeyPairCodec; +import gnu.java.security.util.DerUtil; + +/** + * An implementation of an {@link IKeyPairCodec} that knows how to encode / + * decode PKCS#8 ASN.1 external representation of RSA private keys. + */ +public class RSAKeyPairPKCS8Codec + implements IKeyPairCodec +{ + private static final OID RSA_ALG_OID = new OID(Registry.RSA_OID_STRING); + + // implicit 0-arguments constructor + + public int getFormatID() + { + return PKCS8_FORMAT; + } + + /** + * @throws InvalidParameterException ALWAYS. + */ + public byte[] encodePublicKey(PublicKey key) + { + throw new InvalidParameterException("Wrong format for public keys"); + } + + /** + * Returns the PKCS#8 ASN.1 PrivateKeyInfo representation of an RSA + * private key. The ASN.1 specification is as follows: + * + * 
+   *   PrivateKeyInfo ::= SEQUENCE {
+   *     version              INTEGER, -- MUST be 0
+   *     privateKeyAlgorithm  AlgorithmIdentifier,
+   *     privateKey           OCTET STRING
+   *   }
+   *
+   *   AlgorithmIdentifier ::= SEQUENCE {
+   *     algorithm   OBJECT IDENTIFIER,
+   *     parameters  ANY DEFINED BY algorithm OPTIONAL
+   *   }
+   *
+ * + *

The privateKey field, which is an OCTET STRING, contains the + * DER-encoded form of the RSA private key defined as:

+ * + * 
+   *   RSAPrivateKey ::= SEQUENCE {
+   *     version                 INTEGER, -- MUST be 0
+   *     modulus                 INTEGER, -- n
+   *     publicExponent          INTEGER, -- e
+   *     privateExponent         INTEGER, -- d
+   *     prime1                  INTEGER, -- p
+   *     prime2                  INTEGER, -- q
+   *     exponent1               INTEGER, -- d mod (p-1)
+   *     exponent2               INTEGER, -- d mod (q-1)
+   *     coefficient             INTEGER, -- (inverse of q) mod p
+   *   }
+   *
+ * + * @return the DER encoded form of the ASN.1 representation of the + * PrivateKeyInfo field for an RSA {@link PrivateKey}.. + * @throw InvalidParameterException if an error occurs during the marshalling + * process. + */ + public byte[] encodePrivateKey(PrivateKey key) + { + if (! (key instanceof GnuRSAPrivateKey)) + throw new InvalidParameterException("Wrong key type"); + + GnuRSAPrivateKey pk = (GnuRSAPrivateKey) key; + BigInteger n = pk.getN(); + BigInteger e = pk.getE(); + BigInteger d = pk.getPrivateExponent(); + BigInteger p = pk.getPrimeP(); + BigInteger q = pk.getPrimeQ(); + BigInteger dP = pk.getPrimeExponentP(); + BigInteger dQ = pk.getPrimeExponentQ(); + BigInteger qInv = pk.getCrtCoefficient(); + + DERValue derVersion = new DERValue(DER.INTEGER, BigInteger.ZERO); + + DERValue derOID = new DERValue(DER.OBJECT_IDENTIFIER, RSA_ALG_OID); + + ArrayList algorithmID = new ArrayList(1); + algorithmID.add(derOID); + DERValue derAlgorithmID = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, + algorithmID); + + DERValue derRSAVersion = new DERValue(DER.INTEGER, BigInteger.ZERO); + DERValue derN = new DERValue(DER.INTEGER, n); + DERValue derE = new DERValue(DER.INTEGER, e); + DERValue derD = new DERValue(DER.INTEGER, d); + DERValue derP = new DERValue(DER.INTEGER, p); + DERValue derQ = new DERValue(DER.INTEGER, q); + DERValue derDP = new DERValue(DER.INTEGER, dP); + DERValue derDQ = new DERValue(DER.INTEGER, dQ); + DERValue derQInv = new DERValue(DER.INTEGER, qInv); + + ArrayList rsaPrivateKey = new ArrayList(); + rsaPrivateKey.add(derRSAVersion); + rsaPrivateKey.add(derN); + rsaPrivateKey.add(derE); + rsaPrivateKey.add(derD); + rsaPrivateKey.add(derP); + rsaPrivateKey.add(derQ); + rsaPrivateKey.add(derDP); + rsaPrivateKey.add(derDQ); + rsaPrivateKey.add(derQInv); + DERValue derRSAPrivateKey = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, + rsaPrivateKey); + byte[] pkBytes = derRSAPrivateKey.getEncoded(); + DERValue derPrivateKey = new DERValue(DER.OCTET_STRING, pkBytes); + + ArrayList pki = new ArrayList(3); + pki.add(derVersion); + pki.add(derAlgorithmID); + pki.add(derPrivateKey); + DERValue derPKI = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, pki); + + byte[] result; + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + try + { + DERWriter.write(baos, derPKI); + result = baos.toByteArray(); + } + catch (IOException x) + { + InvalidParameterException y = new InvalidParameterException(); + y.initCause(x); + throw y; + } + + return result; + } + + /** + * @throws InvalidParameterException ALWAYS. + */ + public PublicKey decodePublicKey(byte[] input) + { + throw new InvalidParameterException("Wrong format for public keys"); + } + + /** + * @param input the byte array to unmarshall into a valid RSA + * {@link PrivateKey} instance. MUST NOT be null. + * @return a new instance of a {@link GnuRSAPrivateKey} decoded from the + * PrivateKeyInfo material fed as input. + * @throw InvalidParameterException if an exception occurs during the + * unmarshalling process. + */ + public PrivateKey decodePrivateKey(byte[] input) + { + if (input == null) + throw new InvalidParameterException("Input bytes MUST NOT be null"); + + BigInteger version, n, e, d, p, q, dP, dQ, qInv; + DERReader der = new DERReader(input); + try + { + DERValue derPKI = der.read(); + DerUtil.checkIsConstructed(derPKI, "Wrong PrivateKeyInfo field"); + + DERValue derVersion = der.read(); + DerUtil.checkIsBigInteger(derVersion, "Wrong Version field"); + version = (BigInteger) derVersion.getValue(); + if (version.compareTo(BigInteger.ZERO) != 0) + throw new InvalidParameterException("Unexpected Version: " + version); + + DERValue derAlgoritmID = der.read(); + DerUtil.checkIsConstructed(derAlgoritmID, "Wrong AlgorithmIdentifier field"); + + DERValue derOID = der.read(); + OID algOID = (OID) derOID.getValue(); + if (! algOID.equals(RSA_ALG_OID)) + throw new InvalidParameterException("Unexpected OID: " + algOID); + + DERValue val = der.read(); + byte[] pkBytes = (byte[]) val.getValue(); + + der = new DERReader(pkBytes); + DERValue derRSAPrivateKey = der.read(); + DerUtil.checkIsConstructed(derRSAPrivateKey, "Wrong RSAPrivateKey field"); + + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong RSAPrivateKey Version field"); + version = (BigInteger) val.getValue(); + if (version.compareTo(BigInteger.ZERO) != 0) + throw new InvalidParameterException("Unexpected RSAPrivateKey Version: " + + version); + + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong modulus field"); + n = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong publicExponent field"); + e = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong privateExponent field"); + d = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong prime1 field"); + p = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong prime2 field"); + q = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong exponent1 field"); + dP = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong exponent2 field"); + dQ = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong coefficient field"); + qInv = (BigInteger) val.getValue(); + } + catch (IOException x) + { + InvalidParameterException y = new InvalidParameterException(); + y.initCause(x); + throw y; + } + + return new GnuRSAPrivateKey(Registry.PKCS8_ENCODING_ID, n, e, d, p, q, + dP, dQ, qInv); + } +} diff --git a/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java new file mode 100644 index 00000000000..fb7cea99edd --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairRawCodec.java @@ -0,0 +1,332 @@ +/* RSAKeyPairRawCodec.java -- + Copyright 2001, 2002, 2003, 2006 Free Software Foundation, Inc. + +This file is a 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 of the License, 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; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, 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.key.rsa; + +import gnu.java.security.Registry; +import gnu.java.security.key.IKeyPairCodec; + +import java.io.ByteArrayOutputStream; +import java.math.BigInteger; +import java.security.PrivateKey; +import java.security.PublicKey; + +/** + *

An object that implements the {@link IKeyPairCodec} interface for the + * Raw format to use with RSA keypairs.

+ * + * @version $Revision: 1.1 $ + */ +public class RSAKeyPairRawCodec implements IKeyPairCodec +{ + + // Constants and variables + // ------------------------------------------------------------------------- + + // Constructor(s) + // ------------------------------------------------------------------------- + + // implicit 0-arguments constructor + + // Class methods + // ------------------------------------------------------------------------- + + // Instance methods + // ------------------------------------------------------------------------- + + // gnu.crypto.key.IKeyPairCodec interface implementation ------------------- + + public int getFormatID() + { + return RAW_FORMAT; + } + + /** + *

Returns the encoded form of the designated RSA public key according to + * the Raw format supported by this library.

+ * + *

The Raw format for an RSA public key, in this implementation, is + * a byte sequence consisting of the following:

+ * + *
    + *
  1. 4-byte magic consisting of the value of the literal + * {@link Registry#MAGIC_RAW_RSA_PUBLIC_KEY},
  2. + *
  3. 1-byte version consisting of the constant: 0x01,
    4. + *
  4. 4-byte count of following bytes representing the RSA parameter + * n (the modulus) in internet order,
    5. + *
  5. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the RSA parameter n,
    6. + *
  6. 4-byte count of following bytes representing the RSA parameter + * e (the public exponent) in internet order,
    7. + *
  7. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the RSA parameter e.
    8. + *
+ * + * @param key the key to encode. + * @return the Raw format encoding of the designated key. + * @exception IllegalArgumentException if the designated key is not an RSA + * one. + */ + public byte[] encodePublicKey(PublicKey key) + { + if (!(key instanceof GnuRSAPublicKey)) + { + throw new IllegalArgumentException("key"); + } + + GnuRSAPublicKey rsaKey = (GnuRSAPublicKey) key; + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + + // magic + baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[0]); + baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[1]); + baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[2]); + baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[3]); + + // version + baos.write(0x01); + + // n + byte[] buffer = rsaKey.getModulus().toByteArray(); + int length = buffer.length; + baos.write(length >>> 24); + baos.write((length >>> 16) & 0xFF); + baos.write((length >>> 8) & 0xFF); + baos.write(length & 0xFF); + baos.write(buffer, 0, length); + + // e + buffer = rsaKey.getPublicExponent().toByteArray(); + length = buffer.length; + baos.write(length >>> 24); + baos.write((length >>> 16) & 0xFF); + baos.write((length >>> 8) & 0xFF); + baos.write(length & 0xFF); + baos.write(buffer, 0, length); + + return baos.toByteArray(); + } + + public PublicKey decodePublicKey(byte[] k) + { + // magic + if (k[0] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[0] + || k[1] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[1] + || k[2] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[2] + || k[3] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[3]) + { + throw new IllegalArgumentException("magic"); + } + + // version + if (k[4] != 0x01) + { + throw new IllegalArgumentException("version"); + } + int i = 5; + + int l; + byte[] buffer; + + // n + l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); + buffer = new byte[l]; + System.arraycopy(k, i, buffer, 0, l); + i += l; + BigInteger n = new BigInteger(1, buffer); + + // e + l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); + buffer = new byte[l]; + System.arraycopy(k, i, buffer, 0, l); + i += l; + BigInteger e = new BigInteger(1, buffer); + + return new GnuRSAPublicKey(n, e); + } + + /** + *

Returns the encoded form of the designated RSA private key according to + * the Raw format supported by this library.

+ * + *

The Raw format for an RSA private key, in this implementation, + * is a byte sequence consisting of the following:

+ * + *
    + *
  1. 4-byte magic consisting of the value of the literal + * {@link Registry#MAGIC_RAW_RSA_PRIVATE_KEY},
  2. + *
  3. 1-byte version consisting of the constant: 0x01,
    4. + *
  4. 4-byte count of following bytes representing the RSA parameter + * p (the first prime factor of the modulus) in internet + * order,
    5. + *
  5. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the RSA parameter p,
    6. + *
  6. 4-byte count of following bytes representing the RSA parameter + * q (the second prime factor of the modulus) in internet + * order,
    7. + *
  7. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the RSA parameter q,
    8. + *
  8. 4-byte count of following bytes representing the RSA parameter + * e (the public exponent) in internet order,
    9. + *
  9. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the RSA parameter e,
    10. + *
  10. 4-byte count of following bytes representing the RSA parameter + * d (the private exponent) in internet order,
    11. + *
  11. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the RSA parameter d,
    12. + *
+ * + * @param key the key to encode. + * @return the Raw format encoding of the designated key. + */ + public byte[] encodePrivateKey(PrivateKey key) + { + if (!(key instanceof GnuRSAPrivateKey)) + { + throw new IllegalArgumentException("key"); + } + + GnuRSAPrivateKey rsaKey = (GnuRSAPrivateKey) key; + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + + // magic + baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[0]); + baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[1]); + baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[2]); + baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[3]); + + // version + baos.write(0x01); + + // p + byte[] buffer = rsaKey.getPrimeP().toByteArray(); + int length = buffer.length; + baos.write(length >>> 24); + baos.write((length >>> 16) & 0xFF); + baos.write((length >>> 8) & 0xFF); + baos.write(length & 0xFF); + baos.write(buffer, 0, length); + + // q + buffer = rsaKey.getPrimeQ().toByteArray(); + length = buffer.length; + baos.write(length >>> 24); + baos.write((length >>> 16) & 0xFF); + baos.write((length >>> 8) & 0xFF); + baos.write(length & 0xFF); + baos.write(buffer, 0, length); + + // e + buffer = rsaKey.getPublicExponent().toByteArray(); + length = buffer.length; + baos.write(length >>> 24); + baos.write((length >>> 16) & 0xFF); + baos.write((length >>> 8) & 0xFF); + baos.write(length & 0xFF); + baos.write(buffer, 0, length); + + // d + buffer = rsaKey.getPrivateExponent().toByteArray(); + length = buffer.length; + baos.write(length >>> 24); + baos.write((length >>> 16) & 0xFF); + baos.write((length >>> 8) & 0xFF); + baos.write(length & 0xFF); + baos.write(buffer, 0, length); + + return baos.toByteArray(); + } + + public PrivateKey decodePrivateKey(byte[] k) + { + // magic + if (k[0] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[0] + || k[1] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[1] + || k[2] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[2] + || k[3] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[3]) + { + throw new IllegalArgumentException("magic"); + } + + // version + if (k[4] != 0x01) + { + throw new IllegalArgumentException("version"); + } + int i = 5; + + int l; + byte[] buffer; + + // p + l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); + buffer = new byte[l]; + System.arraycopy(k, i, buffer, 0, l); + i += l; + BigInteger p = new BigInteger(1, buffer); + + // q + l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); + buffer = new byte[l]; + System.arraycopy(k, i, buffer, 0, l); + i += l; + BigInteger q = new BigInteger(1, buffer); + + // e + l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); + buffer = new byte[l]; + System.arraycopy(k, i, buffer, 0, l); + i += l; + BigInteger e = new BigInteger(1, buffer); + + // d + l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8 + | (k[i++] & 0xFF); + buffer = new byte[l]; + System.arraycopy(k, i, buffer, 0, l); + i += l; + BigInteger d = new BigInteger(1, buffer); + + return new GnuRSAPrivateKey(p, q, e, d); + } +} diff --git a/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairX509Codec.java b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairX509Codec.java new file mode 100644 index 00000000000..1c362784b35 --- /dev/null +++ b/libjava/classpath/gnu/java/security/key/rsa/RSAKeyPairX509Codec.java @@ -0,0 +1,248 @@ +/* RSAKeyPairX509Codec.java -- X.509 Encoding/Decoding handler + 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.key.rsa; + +import gnu.java.security.OID; +import gnu.java.security.Registry; +import gnu.java.security.der.BitString; +import gnu.java.security.der.DER; +import gnu.java.security.der.DERReader; +import gnu.java.security.der.DERValue; +import gnu.java.security.der.DERWriter; +import gnu.java.security.key.IKeyPairCodec; +import gnu.java.security.util.DerUtil; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.math.BigInteger; +import java.security.InvalidParameterException; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.util.ArrayList; +import java.util.logging.Logger; + +/** + * An implementation of an {@link IKeyPairCodec} that knows how to encode / + * decode X.509 ASN.1 external representation of RSA public keys. + */ +public class RSAKeyPairX509Codec + implements IKeyPairCodec +{ + private static final Logger log = Logger.getLogger(RSAKeyPairX509Codec.class.getName()); + private static final OID RSA_ALG_OID = new OID(Registry.RSA_OID_STRING); + + // implicit 0-arguments constructor + + public int getFormatID() + { + return X509_FORMAT; + } + + /** + * Returns the X.509 ASN.1 SubjectPublicKeyInfo representation of an + * RSA public key. The ASN.1 specification, as defined in RFC-3280, and + * RFC-2459, is as follows: + * + * 
+   *   SubjectPublicKeyInfo ::= SEQUENCE {
+   *     algorithm         AlgorithmIdentifier,
+   *     subjectPublicKey  BIT STRING
+   *   }
+   *
+   *   AlgorithmIdentifier ::= SEQUENCE {
+   *     algorithm   OBJECT IDENTIFIER,
+   *     parameters  ANY DEFINED BY algorithm OPTIONAL
+   *   }
+   *
+ *

+ * As indicated in RFC-2459: "The parameters field shall have ASN.1 type NULL + * for this algorithm identifier.". + *

+ * The subjectPublicKey field, which is a BIT STRING, contains the + * DER-encoded form of the RSA public key defined as: + * + * 

+   *   RSAPublicKey ::= SEQUENCE {
+   *     modulus         INTEGER, -- n
+   *     publicExponent  INTEGER  -- e
+   *   }
+   *
+ * + * @param key the {@link PublicKey} instance to encode. MUST be an instance of + * {@link GnuRSAPublicKey}. + * @return the ASN.1 representation of the SubjectPublicKeyInfo in an + * X.509 certificate. + * @throw InvalidParameterException if key is not an instance + * of {@link GnuRSAPublicKey} or if an exception occurs during the + * marshalling process. + */ + public byte[] encodePublicKey(PublicKey key) + { + log.entering(this.getClass().getName(), "encodePublicKey()", key); + + if (! (key instanceof GnuRSAPublicKey)) + throw new InvalidParameterException("key"); + + DERValue derOID = new DERValue(DER.OBJECT_IDENTIFIER, RSA_ALG_OID); + + GnuRSAPublicKey rsaKey = (GnuRSAPublicKey) key; + BigInteger n = rsaKey.getN(); + BigInteger e = rsaKey.getE(); + + DERValue derN = new DERValue(DER.INTEGER, n); + DERValue derE = new DERValue(DER.INTEGER, e); + + ArrayList algorithmID = new ArrayList(1); + algorithmID.add(derOID); + DERValue derAlgorithmID = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, + algorithmID); + + ArrayList publicKey = new ArrayList(2); + publicKey.add(derN); + publicKey.add(derE); + DERValue derPublicKey = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, + publicKey); + byte[] spkBytes = derPublicKey.getEncoded(); + DERValue derSPK = new DERValue(DER.BIT_STRING, new BitString(spkBytes)); + + ArrayList spki = new ArrayList(2); + spki.add(derAlgorithmID); + spki.add(derSPK); + DERValue derSPKI = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, spki); + + byte[] result; + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + try + { + DERWriter.write(baos, derSPKI); + result = baos.toByteArray(); + } + catch (IOException x) + { + InvalidParameterException y = new InvalidParameterException(); + y.initCause(x); + throw y; + } + + log.exiting(this.getClass().getName(), "encodePublicKey()", result); + return result; + } + + /** + * @throws InvalidParameterException ALWAYS. + */ + public byte[] encodePrivateKey(PrivateKey key) + { + throw new InvalidParameterException("Wrong format for private keys"); + } + + /** + * @param input the byte array to unmarshall into a valid RSA + * {@link PublicKey} instance. MUST NOT be null. + * @return a new instance of a {@link GnuRSAPublicKey} decoded from the + * SubjectPublicKeyInfo material in an X.509 certificate. + * @throw InvalidParameterException if an exception occurs during the + * unmarshalling process. + */ + public PublicKey decodePublicKey(byte[] input) + { + log.entering(this.getClass().getName(), "decodePublicKey()", input); + + if (input == null) + throw new InvalidParameterException("Input bytes MUST NOT be null"); + + BigInteger n, e; + DERReader der = new DERReader(input); + try + { + DERValue derSPKI = der.read(); + DerUtil.checkIsConstructed(derSPKI, "Wrong SubjectPublicKeyInfo field"); + + DERValue derAlgorithmID = der.read(); + DerUtil.checkIsConstructed(derAlgorithmID, "Wrong AlgorithmIdentifier field"); + + DERValue derOID = der.read(); + if (! (derOID.getValue() instanceof OID)) + throw new InvalidParameterException("Wrong Algorithm field"); + + OID algOID = (OID) derOID.getValue(); + if (! algOID.equals(RSA_ALG_OID)) + throw new InvalidParameterException("Unexpected OID: " + algOID); + + // rfc-2459 states that this field is OPTIONAL but NULL if/when present + DERValue val = der.read(); + if (val.getTag() == DER.NULL) + val = der.read(); + + if (! (val.getValue() instanceof BitString)) + throw new InvalidParameterException("Wrong SubjectPublicKey field"); + + byte[] spkBytes = ((BitString) val.getValue()).toByteArray(); + + der = new DERReader(spkBytes); + val = der.read(); + DerUtil.checkIsConstructed(derAlgorithmID, "Wrong subjectPublicKey field"); + + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong modulus field"); + n = (BigInteger) val.getValue(); + val = der.read(); + DerUtil.checkIsBigInteger(val, "Wrong publicExponent field"); + e = (BigInteger) val.getValue(); + } + catch (IOException x) + { + InvalidParameterException y = new InvalidParameterException(); + y.initCause(x); + throw y; + } + + PublicKey result = new GnuRSAPublicKey(Registry.X509_ENCODING_ID, n, e); + log.exiting(this.getClass().getName(), "decodePublicKey()", result); + return result; + } + + /** + * @throws InvalidParameterException ALWAYS. + */ + public PrivateKey decodePrivateKey(byte[] input) + { + throw new InvalidParameterException("Wrong format for private keys"); + } +} -- cgit v1.2.3