Remco Bloemen
Use your mbed and it\'s noisy analog inputs as a hardware random number generator!
EntropyPool.h@0:dda0a8c4ac0c, 2011-06-20 (annotated)
- Committer:
- Remco
- Date:
- Mon Jun 20 13:23:03 2011 +0000
- Revision:
- 0:dda0a8c4ac0c
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Remco | 0:dda0a8c4ac0c | 1 | #pragma once |
| Remco | 0:dda0a8c4ac0c | 2 | #include <SHA256.h> |
| Remco | 0:dda0a8c4ac0c | 3 | #include "mbed.h" |
| Remco | 0:dda0a8c4ac0c | 4 | |
| Remco | 0:dda0a8c4ac0c | 5 | class EntropyPool: protected SHA256 { |
| Remco | 0:dda0a8c4ac0c | 6 | public: |
| Remco | 0:dda0a8c4ac0c | 7 | EntropyPool(); |
| Remco | 0:dda0a8c4ac0c | 8 | |
| Remco | 0:dda0a8c4ac0c | 9 | int entropy() { return e; } |
| Remco | 0:dda0a8c4ac0c | 10 | |
| Remco | 0:dda0a8c4ac0c | 11 | void gather(); |
| Remco | 0:dda0a8c4ac0c | 12 | |
| Remco | 0:dda0a8c4ac0c | 13 | void gatherAnalogNoise(AnalogIn& input, int entropy = 8); |
| Remco | 0:dda0a8c4ac0c | 14 | |
| Remco | 0:dda0a8c4ac0c | 15 | char* produce(int bytes); |
| Remco | 0:dda0a8c4ac0c | 16 | |
| Remco | 0:dda0a8c4ac0c | 17 | FunctionPointer gatherer; |
| Remco | 0:dda0a8c4ac0c | 18 | |
| Remco | 0:dda0a8c4ac0c | 19 | protected: |
| Remco | 0:dda0a8c4ac0c | 20 | Timer timer; |
| Remco | 0:dda0a8c4ac0c | 21 | int e; |
| Remco | 0:dda0a8c4ac0c | 22 | }; |