Hi.
I was playing with the Fortuna PRNG a little, and found a bug where
it would not initialize its block when `setup' is called (the
Generator PRNG also has this problem). As a consequence, the first
block you get out of the PRNG is all zeros. This patch fixes that
problem.
2006-04-12 Casey Marshall <[EMAIL PROTECTED]>
* gnu/javax/crypto/prng/Fortuna.java (setup): call `fillBlock.'
(Generator.setup): call `fillBlock.'
Committed.
Index: gnu/javax/crypto/prng/Fortuna.java
===================================================================
RCS file: /cvsroot/classpath/classpath/gnu/javax/crypto/prng/Fortuna.java,v
retrieving revision 1.1
diff -u -B -b -r1.1 Fortuna.java
--- gnu/javax/crypto/prng/Fortuna.java 26 Jan 2006 02:25:09 -0000 1.1
+++ gnu/javax/crypto/prng/Fortuna.java 12 Apr 2006 18:00:39 -0000
@@ -142,6 +142,14 @@
pool = 0;
pool0Count = 0;
generator.init(attributes);
+ try
+ {
+ fillBlock ();
+ }
+ catch (LimitReachedException shouldNotHappen)
+ {
+ throw new RuntimeException (shouldNotHappen);
+ }
}
public void fillBlock() throws LimitReachedException
@@ -324,6 +332,7 @@
byte[] seed = (byte[]) attributes.get(SEED);
if (seed != null)
addRandomBytes(seed);
+ fillBlock ();
}
/**
