From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../gnu/javax/crypto/key/dh/DHKeyPairRawCodec.java | 336 +++++++++++++++++++++ 1 file changed, 336 insertions(+) create mode 100644 libjava/classpath/gnu/javax/crypto/key/dh/DHKeyPairRawCodec.java (limited to 'libjava/classpath/gnu/javax/crypto/key/dh/DHKeyPairRawCodec.java') diff --git a/libjava/classpath/gnu/javax/crypto/key/dh/DHKeyPairRawCodec.java b/libjava/classpath/gnu/javax/crypto/key/dh/DHKeyPairRawCodec.java new file mode 100644 index 000000000..4275389ce --- /dev/null +++ b/libjava/classpath/gnu/javax/crypto/key/dh/DHKeyPairRawCodec.java @@ -0,0 +1,336 @@ +/* DHKeyPairRawCodec.java -- + Copyright (C) 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.javax.crypto.key.dh; + +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} operations for the + * Raw format to use with Diffie-Hellman keypairs. + */ +public class DHKeyPairRawCodec + implements IKeyPairCodec +{ + public int getFormatID() + { + return RAW_FORMAT; + } + + /** + * Returns the encoded form of the designated Diffie-Hellman public key + * according to the Raw format supported by this library. + *

+ * The Raw format for a DH 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_DH_PUBLIC_KEY},
    2. + *
  2. 1-byte version consisting of the constant: 0x01,
    3. + *
  3. 4-byte count of following bytes representing the DH parameter + * q in internet order,
    4. + *
  4. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter q, + *
    5. + *
  5. 4-byte count of following bytes representing the DH parameter + * p in internet order,
    6. + *
  6. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter p, + *
    7. + *
  7. 4-byte count of following bytes representing the DH parameter + * g,
    8. + *
  8. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter g, + *
    9. + *
  9. 4-byte count of following bytes representing the DH parameter + * y,
    10. + *
  10. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter y, + *
    11. + *
+ * + * @param key the key to encode. + * @return the Raw format encoding of the designated key. + * @throws IllegalArgumentException if the designated key is not a DH one. + * @see Registry#MAGIC_RAW_DH_PUBLIC_KEY + */ + public byte[] encodePublicKey(PublicKey key) + { + if (! (key instanceof GnuDHPublicKey)) + throw new IllegalArgumentException("key"); + GnuDHPublicKey dhKey = (GnuDHPublicKey) key; + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + // magic + baos.write(Registry.MAGIC_RAW_DH_PUBLIC_KEY[0]); + baos.write(Registry.MAGIC_RAW_DH_PUBLIC_KEY[1]); + baos.write(Registry.MAGIC_RAW_DH_PUBLIC_KEY[2]); + baos.write(Registry.MAGIC_RAW_DH_PUBLIC_KEY[3]); + // version + baos.write(0x01); + // q + byte[] buffer = dhKey.getQ().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); + // p + buffer = dhKey.getParams().getP().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); + // g + buffer = dhKey.getParams().getG().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); + // y + buffer = dhKey.getY().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_DH_PUBLIC_KEY[0] + || k[1] != Registry.MAGIC_RAW_DH_PUBLIC_KEY[1] + || k[2] != Registry.MAGIC_RAW_DH_PUBLIC_KEY[2] + || k[3] != Registry.MAGIC_RAW_DH_PUBLIC_KEY[3]) + throw new IllegalArgumentException("magic"); + // version + if (k[4] != 0x01) + throw new IllegalArgumentException("version"); + int i = 5; + int l; + byte[] 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); + // 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); + // g + 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 g = new BigInteger(1, buffer); + // y + 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 y = new BigInteger(1, buffer); + return new GnuDHPublicKey(q, p, g, y); + } + + /** + * Returns the encoded form of the designated Diffie-Hellman private key + * according to the Raw format supported by this library. + *

+ * The Raw format for a DH 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_DH_PRIVATE_KEY},
    2. + *
  2. 1-byte version consisting of the constant: 0x01,
    3. + *
  3. 4-byte count of following bytes representing the DH parameter + * q,
    4. + *
  4. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter q, + *
    5. + *
  5. 4-byte count of following bytes representing the DH parameter + * p in internet order,
    6. + *
  6. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter p, + *
    7. + *
  7. 4-byte count of following bytes representing the DH parameter + * g,
    8. + *
  8. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter g, + *
    9. + *
  9. 4-byte count of following bytes representing the DH parameter + * x,
    10. + *
  10. n-bytes representation of a {@link BigInteger} obtained by invoking + * the toByteArray() method on the DH parameter x, + *
    11. + *
+ * + * @param key the key to encode. + * @return the Raw format encoding of the designated key. + * @throws IllegalArgumentException if the designated key is not a DH one. + * @see Registry#MAGIC_RAW_DH_PRIVATE_KEY + */ + public byte[] encodePrivateKey(PrivateKey key) + { + if (! (key instanceof GnuDHPrivateKey)) + throw new IllegalArgumentException("key"); + GnuDHPrivateKey dhKey = (GnuDHPrivateKey) key; + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + // magic + baos.write(Registry.MAGIC_RAW_DH_PRIVATE_KEY[0]); + baos.write(Registry.MAGIC_RAW_DH_PRIVATE_KEY[1]); + baos.write(Registry.MAGIC_RAW_DH_PRIVATE_KEY[2]); + baos.write(Registry.MAGIC_RAW_DH_PRIVATE_KEY[3]); + // version + baos.write(0x01); + // q + byte[] buffer = dhKey.getQ().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); + // p + buffer = dhKey.getParams().getP().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); + // g + buffer = dhKey.getParams().getG().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); + // x + buffer = dhKey.getX().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_DH_PRIVATE_KEY[0] + || k[1] != Registry.MAGIC_RAW_DH_PRIVATE_KEY[1] + || k[2] != Registry.MAGIC_RAW_DH_PRIVATE_KEY[2] + || k[3] != Registry.MAGIC_RAW_DH_PRIVATE_KEY[3]) + throw new IllegalArgumentException("magic"); + // version + if (k[4] != 0x01) + throw new IllegalArgumentException("version"); + int i = 5; + int l; + byte[] 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); + // 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); + // g + 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 g = new BigInteger(1, buffer); + // x + 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 x = new BigInteger(1, buffer); + return new GnuDHPrivateKey(q, p, g, x); + } +} -- cgit v1.2.3