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. --- libjava/classpath/gnu/javax/crypto/mode/IMode.java | 123 +++++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 libjava/classpath/gnu/javax/crypto/mode/IMode.java (limited to 'libjava/classpath/gnu/javax/crypto/mode/IMode.java') diff --git a/libjava/classpath/gnu/javax/crypto/mode/IMode.java b/libjava/classpath/gnu/javax/crypto/mode/IMode.java new file mode 100644 index 000000000..72c99ba73 --- /dev/null +++ b/libjava/classpath/gnu/javax/crypto/mode/IMode.java @@ -0,0 +1,123 @@ +/* IMode.java -- + Copyright (C) 2001, 2002, 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.mode; + +import gnu.javax.crypto.cipher.IBlockCipher; + +/** + * The basic visible methods of any block cipher mode. + *

+ * Block ciphers encrypt plaintext in fixed size n-bit blocks. For messages + * larger than n bits, the simplest approach is to segment the message into + * n-bit blocks and process (encrypt and/or decrypt) each one separately + * (Electronic Codebook or ECB mode). But this approach has disadvantages in + * most applications. The block cipher modes of operations are one way of + * working around those disadvantages. + *

+ * A Mode always employs an underlying block cipher for processing its + * input. For all intents and purposes, a Mode appears to behave as any + * other block cipher with the following differences: + *

+ *

+ * Possible additional initialisation values for an instance of that type are: + *

+ */ +public interface IMode + extends IBlockCipher +{ + /** + * Property name of the state in which to operate this mode. The value + * associated to this property name is taken to be an {@link Integer} which + * value is either ENCRYPTION or DECRYPTION. + */ + String STATE = "gnu.crypto.mode.state"; + /** + * Property name of the block size in which to operate this mode. The value + * associated with this property name is taken to be an {@link Integer}. If + * it is not specified, the value of the block size of the underlying block + * cipher, used to construct the mode instance, shall be used. + */ + String MODE_BLOCK_SIZE = "gnu.crypto.mode.block.size"; + /** + * Property name of the initialisation vector to use, if required, with this + * instance. The value associated with this property name is taken to be a + * byte array. If the concrete instance needs such a parameter, and it has not + * been specified as part of the initialissation parameters, an all-zero byte + * array of the appropriate size shall be used. + */ + String IV = "gnu.crypto.mode.iv"; + /** Constant indicating the instance is being used for encryption. */ + int ENCRYPTION = 1; + /** Constant indicating the instance is being used for decryption. */ + int DECRYPTION = 2; + + /** + * A convenience method. Effectively invokes the encryptBlock() + * or decryptBlock() method depending on the operational state + * of the instance. + * + * @param in the plaintext. + * @param inOffset index of in from which to start considering + * data. + * @param out the ciphertext. + * @param outOffset index of out from which to store result. + * @exception IllegalStateException if the instance is not initialised. + */ + void update(byte[] in, int inOffset, byte[] out, int outOffset) + throws IllegalStateException; +} -- cgit v1.2.3