1 files changed, 114 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/jce/prng/CSPRNGSpi.java b/libjava/classpath/gnu/javax/crypto/jce/prng/CSPRNGSpi.java
new file mode 100644
index 00000000000..c0aa015b065
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+++ b/libjava/classpath/gnu/javax/crypto/jce/prng/CSPRNGSpi.java
@@ -0,0 +1,114 @@
+/* CSPRNGSpi.java -- 
+   Copyright (C) 2004, 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.prng;
+
+import gnu.java.security.Registry;
+import gnu.javax.crypto.prng.CSPRNG;
+import gnu.java.security.prng.IRandom;
+import gnu.java.security.prng.LimitReachedException;
+
+import java.net.MalformedURLException;
+import java.security.SecureRandomSpi;
+
+/**
+ * The implementation of the continuously-seeded SecureRandom
+ * <i>Service Provider Interface</i> (<b>SPI</b>) adapter.<p>
+ */
+public class CSPRNGSpi extends SecureRandomSpi
+{
+
+  // Constants and variables
+  // -------------------------------------------------------------------------
+
+  private final IRandom adaptee;
+
+  // Constructor(s)
+  // -------------------------------------------------------------------------
+
+  public CSPRNGSpi() throws ClassNotFoundException, MalformedURLException,
+      NumberFormatException
+  {
+    super();
+
+    adaptee = CSPRNG.getSystemInstance();
+  }
+
+  // Instance methods
+  // -------------------------------------------------------------------------
+
+  protected byte[] engineGenerateSeed(final int count)
+  {
+    if (count < 0)
+      {
+        throw new IllegalArgumentException("count must be nonnegative");
+      }
+    byte[] buf = new byte[count];
+    if (count == 0)
+      {
+        return buf;
+      }
+    engineNextBytes(buf);
+    return buf;
+  }
+
+  protected void engineNextBytes(final byte[] buffer)
+  {
+    if (buffer == null)
+      {
+        throw new NullPointerException();
+      }
+    try
+      {
+        adaptee.nextBytes(buffer, 0, buffer.length);
+      }
+    catch (LimitReachedException lre)
+      {
+        throw new RuntimeException("random-number generator has been exhausted");
+      }
+  }
+
+  protected void engineSetSeed(final byte[] seed)
+  {
+    if (seed == null)
+      {
+        throw new NullPointerException();
+      }
+    adaptee.addRandomBytes(seed, 0, seed.length);
+  }
+}
+\ No newline at end of file