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Diffstat (limited to 'botan/src/rng/randpool/randpool.h')
-rw-r--r-- | botan/src/rng/randpool/randpool.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/botan/src/rng/randpool/randpool.h b/botan/src/rng/randpool/randpool.h new file mode 100644 index 0000000..b6a3add --- /dev/null +++ b/botan/src/rng/randpool/randpool.h @@ -0,0 +1,53 @@ +/* +* Randpool +* (C) 1999-2008 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_RANDPOOL_H__ +#define BOTAN_RANDPOOL_H__ + +#include <botan/rng.h> +#include <botan/block_cipher.h> +#include <botan/mac.h> +#include <vector> + +namespace Botan { + +/** +* Randpool +*/ +class BOTAN_DLL Randpool : public RandomNumberGenerator + { + public: + void randomize(byte[], u32bit); + bool is_seeded() const { return seeded; } + void clear() throw(); + std::string name() const; + + void reseed(u32bit bits_to_collect); + void add_entropy_source(EntropySource* es); + void add_entropy(const byte input[], u32bit length); + + Randpool(BlockCipher* cipher, MessageAuthenticationCode* mac, + u32bit pool_blocks = 32, + u32bit iterations_before_reseed = 128); + + ~Randpool(); + private: + void update_buffer(); + void mix_pool(); + + u32bit ITERATIONS_BEFORE_RESEED, POOL_BLOCKS; + BlockCipher* cipher; + MessageAuthenticationCode* mac; + + std::vector<EntropySource*> entropy_sources; + SecureVector<byte> pool, buffer, counter; + bool seeded; + }; + +} + +#endif |