* doc/www.gnu.org/home.wml: add more links to projects/products using

GNU Classpath.

2003-02-09  Raif S. Naffah  <raif@fl.net.au>

	* gnu/java/security/provider/SHA1PRNG.java (ensureIsSeeded): new
	method used to ensure seeding has occurred and that a specific
	seed can be set and used.

3 files changed, 67 insertions, 11 deletions

diff --git a/ChangeLog b/ChangeLog
index 57ab758d8..d4ddc26ca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2003-02-09  C. Brian Jones  <cbj@gnu.org>
+
+	* doc/www.gnu.org/home.wml: add more links to projects/products using
+	GNU Classpath.
+
+2003-02-09  Raif S. Naffah  <raif@fl.net.au>
+
+	* gnu/java/security/provider/SHA1PRNG.java (ensureIsSeeded): new 
+	method used to ensure seeding has occurred and that a specific 
+	seed can be set and used.
+
+
 2003-02-07  Stephen Crawley  <crawley@dstc.edu.au>
 
 	* java/beans/PropertyDescriptor.java
diff --git a/doc/www.gnu.org/home.wml b/doc/www.gnu.org/home.wml
index 4cb2af27c..5d4e83e48 100644
--- a/doc/www.gnu.org/home.wml
+++ b/doc/www.gnu.org/home.wml
@@ -251,12 +251,46 @@ into the VM's dynamic linking process through pluggable verification
 modules.
 </td>
 </tr>
+<tr>
 <td><createlink url="http://www.e-leos.net/" name="E-LEOS"></td>
 <td>
 GNU Classpath is used as part of this project to create a Java operating
 system.
 </td>
+</tr>
+</table>
+
+<H4>Projects or Commercial Products</H4> 
+<p>
+</p>
+
+<table border="1">
+<tr><th>Project</th><th>Description</th></tr>
+<tr>
+<td><createlink url="http://www.flex-compiler.lcs.mit.edu/" name="Flex Compiler"></td>
+<td>
+FLEX is a compiler infrastructure written in Java for Java. Applications 
+include a program analysis and transformation framework for distributed 
+and embedded systems. Native backends exist for the StrongARM and MIPS 
+processors; it can also generate portable C code that can run on any 
+platform with gcc.
+</td>
+</tr>
 <tr>
+<td><createlink url="http://www.aicas.com/jamaica.html" name="JamaicaVM"></td>
+<td>
+JamaicaVM provides realtime execution, garbage collection, sophisticated
+static optimizations and targets many real-time operating systems and 
+processor architectures.
+</td>
+</tr>
+<tr>
+<td><createlink url="http://www.svtehs.com/ipjv.htm" name="IPJV"></td>
+<td>
+The IPJVM virtual machine for Java is a clean room implementation, 
+that has been specially optimized to run on device with limited amount 
+of internal memory.  IPJV-ES evaluation board is available.
+</td>
 </tr>
 </table>
 </en>
diff --git a/gnu/java/security/provider/SHA1PRNG.java b/gnu/java/security/provider/SHA1PRNG.java
index 669b1b55b..97a8b9e34 100644
--- a/gnu/java/security/provider/SHA1PRNG.java
+++ b/gnu/java/security/provider/SHA1PRNG.java
@@ -1,5 +1,5 @@
 /* SHA1PRNG.java --- Secure Random SPI SHA1PRNG
-   Copyright (C) 1999, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2001, 2003 Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -51,27 +51,22 @@ public class SHA1PRNG extends SecureRandomSpi implements Serializable
   byte data[];
   int seedpos;
   int datapos;
+  private boolean seeded = false; // set to true when we seed this
 
   public SHA1PRNG()
   {
     try {
       digest = MessageDigest.getInstance("SHA");
     } catch ( NoSuchAlgorithmException nsae) {
-      System.out.println("Failed to find SHA Message Digest: " + nsae);
-      nsae.printStackTrace();
+//      System.out.println("Failed to find SHA Message Digest: " + nsae);
+//      nsae.printStackTrace();
+      throw new InternalError ("no SHA implementation found");
     }
 
     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);
-
+    datapos = 20;  // try to force hashing a first block
   }
 
   public void engineSetSeed(byte[] seed)
@@ -84,6 +79,7 @@ public class SHA1PRNG extends SecureRandomSpi implements Serializable
 
   public void engineNextBytes(byte[] bytes)
   {
+    ensureIsSeeded ();
     int loc = 0;
     while (loc < bytes.length)
       {
@@ -113,4 +109,18 @@ public class SHA1PRNG extends SecureRandomSpi implements Serializable
     engineNextBytes( tmp );
     return tmp;
   }
+
+  private void ensureIsSeeded()
+  {
+    if (!seeded)
+      {
+        new Random(0L).nextBytes(seed);
+
+        byte[] digestdata = digest.digest(data);
+        System.arraycopy(digestdata, 0, data, 0, 20);
+
+        seeded = true;
+      }
+  }
+
 }