Remco Bloemen / Mbed 2 deprecated EntropySource

Use your mbed and it\'s noisy analog inputs as a hardware random number generator!

Dependencies:   mbed SHA256

Diff: EntropyPool.h

Revision:
0:dda0a8c4ac0c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EntropyPool.h	Mon Jun 20 13:23:03 2011 +0000
@@ -0,0 +1,22 @@
+#pragma once
+#include <SHA256.h>
+#include "mbed.h"
+
+class EntropyPool: protected SHA256 {
+public:
+    EntropyPool();
+    
+    int entropy() { return e; }
+    
+    void gather();
+    
+    void gatherAnalogNoise(AnalogIn& input, int entropy = 8);
+    
+    char* produce(int bytes);
+
+    FunctionPointer gatherer;
+    
+protected:
+    Timer  timer;
+    int    e;
+};
\ No newline at end of file