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| author | mark <mark@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-03-10 21:46:48 +0000 |
|---|---|---|
| committer | mark <mark@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-03-10 21:46:48 +0000 |
| commit | ce57ab760f69de6db452def7ffbf5b114a2d8694 (patch) | |
| tree | ea38c56431c5d4528fb54254c3f8e50f517bede3 /libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java | |
| parent | 50996fe55769882de3f410896032c887f0ff0d04 (diff) | |
| download | ppe42-gcc-ce57ab760f69de6db452def7ffbf5b114a2d8694.tar.gz ppe42-gcc-ce57ab760f69de6db452def7ffbf5b114a2d8694.zip | |
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
Diffstat (limited to 'libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java b/libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java new file mode 100644 index 00000000000..fad5f54b236 --- /dev/null +++ b/libjava/classpath/gnu/javax/crypto/keyring/EncryptedEntry.java @@ -0,0 +1,235 @@ +/* EncryptedEntry.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.keyring; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.IOException; + +import java.security.InvalidKeyException; + +import java.util.Arrays; +import java.util.Collections; +import java.util.Date; +import java.util.Iterator; +import java.util.HashMap; +import java.util.List; + +import gnu.java.security.Registry; +import gnu.javax.crypto.cipher.CipherFactory; +import gnu.javax.crypto.cipher.IBlockCipher; +import gnu.javax.crypto.mode.IMode; +import gnu.javax.crypto.mode.ModeFactory; +import gnu.javax.crypto.pad.IPad; +import gnu.javax.crypto.pad.PadFactory; +import gnu.javax.crypto.pad.WrongPaddingException; + +public class EncryptedEntry extends MaskableEnvelopeEntry implements Registry +{ + + // Constants and fields. + // ------------------------------------------------------------------------ + + public static final int TYPE = 0; + + // Constructor. + // ------------------------------------------------------------------------ + + public EncryptedEntry(String cipher, String mode, Properties properties) + { + super(TYPE, properties); + if (cipher == null || mode == null) + { + throw new IllegalArgumentException( + "neither cipher nor mode can be null"); + } + properties.put("cipher", cipher); + properties.put("mode", mode); + setMasked(false); + } + + private EncryptedEntry() + { + super(TYPE, new Properties()); + setMasked(true); + } + + // Class methods. + // ------------------------------------------------------------------------ + + public static EncryptedEntry decode(DataInputStream in) throws IOException + { + EncryptedEntry entry = new EncryptedEntry(); + entry.defaultDecode(in); + if (!entry.properties.containsKey("cipher")) + { + throw new MalformedKeyringException("no cipher"); + } + if (!entry.properties.containsKey("cipher")) + { + throw new MalformedKeyringException("no cipher"); + } + return entry; + } + + // Instance methods. + // ------------------------------------------------------------------------ + + public void decrypt(byte[] key, byte[] iv) throws IllegalArgumentException, + WrongPaddingException + { + if (!isMasked() || payload == null) + { + return; + } + IMode mode = getMode(key, iv, IMode.DECRYPTION); + IPad padding = null; + padding = PadFactory.getInstance("PKCS7"); + padding.init(mode.currentBlockSize()); + byte[] buf = new byte[payload.length]; + int count = 0; + for (int i = 0; i < payload.length; i++) + { + mode.update(payload, count, buf, count); + count += mode.currentBlockSize(); + } + int padlen = padding.unpad(buf, 0, buf.length); + DataInputStream in = new DataInputStream( + new ByteArrayInputStream( + buf, + 0, + buf.length + - padlen)); + try + { + decodeEnvelope(in); + } + catch (IOException ioe) + { + throw new IllegalArgumentException("decryption failed"); + } + setMasked(false); + payload = null; + } + + public void encrypt(byte[] key, byte[] iv) throws IOException + { + IMode mode = getMode(key, iv, IMode.ENCRYPTION); + IPad pad = PadFactory.getInstance("PKCS7"); + pad.init(mode.currentBlockSize()); + ByteArrayOutputStream bout = new ByteArrayOutputStream(1024); + DataOutputStream out2 = new DataOutputStream(bout); + for (Iterator it = entries.iterator(); it.hasNext();) + { + Entry entry = (Entry) it.next(); + entry.encode(out2); + } + byte[] plaintext = bout.toByteArray(); + byte[] padding = pad.pad(plaintext, 0, plaintext.length); + payload = new byte[plaintext.length + padding.length]; + byte[] lastBlock = new byte[mode.currentBlockSize()]; + int l = mode.currentBlockSize() - padding.length; + System.arraycopy(plaintext, plaintext.length - l, lastBlock, 0, l); + System.arraycopy(padding, 0, lastBlock, l, padding.length); + int count = 0; + while (count + mode.currentBlockSize() < plaintext.length) + { + mode.update(plaintext, count, payload, count); + count += mode.currentBlockSize(); + } + mode.update(lastBlock, 0, payload, count); + } + + public void encodePayload() throws IOException + { + if (payload == null) + { + throw new IOException("not encrypted"); + } + } + + // Own methods. + // ------------------------------------------------------------------------ + + private IMode getMode(byte[] key, byte[] iv, int state) + { + IBlockCipher cipher = CipherFactory.getInstance(properties.get("cipher")); + if (cipher == null) + { + throw new IllegalArgumentException("no such cipher: " + + properties.get("cipher")); + } + int blockSize = cipher.defaultBlockSize(); + if (properties.containsKey("block-size")) + { + try + { + blockSize = Integer.parseInt(properties.get("block-size")); + } + catch (NumberFormatException nfe) + { + throw new IllegalArgumentException("bad block size: " + + nfe.getMessage()); + } + } + IMode mode = ModeFactory.getInstance(properties.get("mode"), cipher, + blockSize); + if (mode == null) + { + throw new IllegalArgumentException("no such mode: " + + properties.get("mode")); + } + + HashMap modeAttr = new HashMap(); + modeAttr.put(IMode.KEY_MATERIAL, key); + modeAttr.put(IMode.STATE, new Integer(state)); + modeAttr.put(IMode.IV, iv); + try + { + mode.init(modeAttr); + } + catch (InvalidKeyException ike) + { + throw new IllegalArgumentException(ike.toString()); + } + return mode; + } +} |

