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Diffstat (limited to 'libjava/classpath/gnu/javax/crypto/jce/prng/FortunaImpl.java')
-rw-r--r--libjava/classpath/gnu/javax/crypto/jce/prng/FortunaImpl.java25
1 files changed, 19 insertions, 6 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/jce/prng/FortunaImpl.java b/libjava/classpath/gnu/javax/crypto/jce/prng/FortunaImpl.java
index 8e3782e..b18410c 100644
--- a/libjava/classpath/gnu/javax/crypto/jce/prng/FortunaImpl.java
+++ b/libjava/classpath/gnu/javax/crypto/jce/prng/FortunaImpl.java
@@ -39,6 +39,9 @@ exception statement from your version. */
package gnu.javax.crypto.jce.prng;
import gnu.java.security.prng.LimitReachedException;
+
+import gnu.java.security.jce.prng.SecureRandomAdapter;
+
import gnu.javax.crypto.prng.Fortuna;
import java.security.SecureRandomSpi;
@@ -47,19 +50,27 @@ import java.util.Collections;
public final class FortunaImpl
extends SecureRandomSpi
{
+ private boolean virgin = true;
private final Fortuna adaptee;
public FortunaImpl()
{
adaptee = new Fortuna();
- adaptee.init(Collections.singletonMap(Fortuna.SEED, new byte[0]));
}
protected void engineSetSeed(byte[] seed)
{
synchronized (adaptee)
{
- adaptee.addRandomBytes(seed);
+ if (virgin)
+ {
+ adaptee.init (Collections.singletonMap (Fortuna.SEED, seed));
+ virgin = false;
+ }
+ else
+ {
+ adaptee.addRandomBytes (seed);
+ }
}
}
@@ -67,6 +78,10 @@ public final class FortunaImpl
{
synchronized (adaptee)
{
+ if (virgin)
+ {
+ this.engineSetSeed(engineGenerateSeed(32));
+ }
try
{
adaptee.nextBytes(buffer);
@@ -78,10 +93,8 @@ public final class FortunaImpl
}
}
- protected byte[] engineGenerateSeed(int numbytes)
+ protected byte[] engineGenerateSeed(int numBytes)
{
- byte[] seed = new byte[numbytes];
- engineNextBytes(seed);
- return seed;
+ return SecureRandomAdapter.getSeed(numBytes);
}
}