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+/* BlockCipherParameterSpec.java --
+ Copyright (C) 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.jce.spec;
+
+import gnu.java.security.util.Util;
+
+import java.security.spec.AlgorithmParameterSpec;
+
+/**
+ * Block cipher parameters in GNU are the cipher's name, its block and key
+ * sizes, and an optional initialization vector.
+ */
+public class BlockCipherParameterSpec
+ implements AlgorithmParameterSpec
+{
+ /** The initialization vector. */
+ protected byte[] iv;
+ /** The cipher's block size, in bytes. */
+ protected int blockSize;
+ /** The cipher's key size, in bytes. */
+ protected int keySize;
+
+ /**
+ * Create a new parameter specification.
+ *
+ * @param iv The initialization vector, or <code>null</code> if there is no
+ * IV.
+ * @param blockSize The cipher's block size, in bytes.
+ * @param keySize The cipher's key size, in bytes.
+ */
+ public BlockCipherParameterSpec(byte[] iv, int blockSize, int keySize)
+ {
+ this.iv = (iv != null) ? (byte[]) iv.clone() : null;
+ this.blockSize = blockSize;
+ this.keySize = keySize;
+ }
+
+ /**
+ * Create a new parameter specification with no IV.
+ *
+ * @param blockSize The cipher's block size, in bytes.
+ * @param keySize The cipher's key size, in bytes.
+ */
+ public BlockCipherParameterSpec(int blockSize, int keySize)
+ {
+ this(null, blockSize, keySize);
+ }
+
+ /**
+ * Get the initialization vector for the cipher, or <code>null</code> if
+ * there is no IV.
+ *
+ * @return The IV.
+ */
+ public byte[] getIV()
+ {
+ return iv;
+ }
+
+ /**
+ * Get the block size of the cipher these parameters are for.
+ *
+ * @return The block size.
+ */
+ public int getBlockSize()
+ {
+ return blockSize;
+ }
+
+ /**
+ * Get the key size of the cipher these parameters are for.
+ *
+ * @return The block size.
+ */
+ public int getKeySize()
+ {
+ return keySize;
+ }
+
+ public String toString()
+ {
+ return getClass().getName() + " { "
+ + ((iv != null) ? ("IV=" + Util.toString(iv)) + ", " : "")
+ + "BS=" + blockSize + ", KS=" + keySize + " }";
+ }
+}