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diff --git a/libjava/gnu/java/security/provider/SHA1PRNG.java b/libjava/gnu/java/security/provider/SHA1PRNG.java
new file mode 100644
index 00000000000..3aaf652bb46
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+++ b/libjava/gnu/java/security/provider/SHA1PRNG.java
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+/* SHA1PRNG.java --- Secure Random SPI SHA1PRNG
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+This file is 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, 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; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+
+package gnu.java.security.provider;
+
+import java.util.Random;
+// import java.security.SecureRandomSpi;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.io.Serializable;
+
+// public class SHA1PRNG extends SecureRandomSpi implements Serializable
+public class SHA1PRNG implements Serializable
+{
+  MessageDigest digest;
+  byte seed[];
+  byte data[];
+  int seedpos;
+  int datapos;
+
+  public SHA1PRNG()
+  {
+    try {
+      digest = MessageDigest.getInstance("SHA");
+    } catch ( NoSuchAlgorithmException nsae) {
+      System.out.println("Failed to find SHA Message Digest: " + nsae);
+      nsae.printStackTrace();
+    }
+
+    seed = new byte[20];
+    seedpos = 0;
+    data = new byte[40];
+    datapos = 0;
+
+    new Random().nextBytes(seed);
+
+    byte digestdata[];
+    digestdata = digest.digest( data );
+    System.arraycopy( digestdata, 0, data, 0, 20);
+
+  }
+
+  public void engineSetSeed(byte[] seed)
+  {
+    for(int i = 0; i < seed.length; i++)
+      this.seed[seedpos++ % 20] ^= seed[i];
+    seedpos %= 20;
+
+  }
+
+  public void engineNextBytes(byte[] bytes)
+  {
+
+    if( bytes.length < (20 - datapos) ) {
+      System.arraycopy( bytes, 0, data, datapos, bytes.length);
+      datapos += bytes.length;
+      return;
+    }
+
+    int i, blen = bytes.length, bpos = 0;
+    byte digestdata[];
+    while( bpos < blen ) {
+      i = 20 - datapos;
+      System.arraycopy( bytes, bpos, data, datapos, i);
+      bpos += i;
+      datapos += i;
+      if( datapos >= 20) {
+	//System.out.println( (0 + 20) + "\n" + (20 + 20) );
+	System.arraycopy( seed, 0, data, 20, 20);
+	digestdata = digest.digest( data );
+	System.arraycopy( digestdata, 0, data, 0, 20);
+	datapos = 0;
+      }
+    }
+
+  }
+
+  public byte[] engineGenerateSeed(int numBytes)
+  {
+    byte tmp[] = new byte[numBytes];
+	
+    engineNextBytes( tmp );
+    return tmp;
+  }
+}