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Diffstat (limited to 'embeddedcryptopp/rng.h')
-rw-r--r-- | embeddedcryptopp/rng.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/embeddedcryptopp/rng.h b/embeddedcryptopp/rng.h deleted file mode 100644 index 2439dee..0000000 --- a/embeddedcryptopp/rng.h +++ /dev/null @@ -1,77 +0,0 @@ -// rng.h - misc RNG related classes, see also osrng.h, randpool.h - -#ifndef CRYPTOPP_RNG_H -#define CRYPTOPP_RNG_H - -#include "cryptlib.h" -#include "filters.h" - -NAMESPACE_BEGIN(CryptoPP) - -//! linear congruential generator -/*! originally by William S. England, do not use for cryptographic purposes */ -class LC_RNG : public RandomNumberGenerator -{ -public: - LC_RNG(word32 init_seed) - : seed(init_seed) {} - - void GenerateBlock(byte *output, size_t size); - - word32 GetSeed() {return seed;} - -private: - word32 seed; - - static const word32 m; - static const word32 q; - static const word16 a; - static const word16 r; -}; - -//! RNG derived from ANSI X9.17 Appendix C - -class CRYPTOPP_DLL X917RNG : public RandomNumberGenerator, public NotCopyable -{ -public: - // cipher will be deleted by destructor, deterministicTimeVector = 0 means obtain time vector from system - X917RNG(BlockTransformation *cipher, const byte *seed, const byte *deterministicTimeVector = 0); - - void GenerateIntoBufferedTransformation(BufferedTransformation &target, const std::string &channel, lword size); - -private: - member_ptr<BlockTransformation> cipher; - unsigned int S; // blocksize of cipher - SecByteBlock dtbuf; // buffer for enciphered timestamp - SecByteBlock randseed, m_lastBlock, m_deterministicTimeVector; -}; - -/** This class implements Maurer's Universal Statistical Test for Random Bit Generators - it is intended for measuring the randomness of *PHYSICAL* RNGs. - For more details see his paper in Journal of Cryptology, 1992. */ - -class MaurerRandomnessTest : public Bufferless<Sink> -{ -public: - MaurerRandomnessTest(); - - size_t Put2(const byte *inString, size_t length, int messageEnd, bool blocking); - - // BytesNeeded() returns how many more bytes of input is needed by the test - // GetTestValue() should not be called before BytesNeeded()==0 - unsigned int BytesNeeded() const {return n >= (Q+K) ? 0 : Q+K-n;} - - // returns a number between 0.0 and 1.0, describing the quality of the - // random numbers entered - double GetTestValue() const; - -private: - enum {L=8, V=256, Q=2000, K=2000}; - double sum; - unsigned int n; - unsigned int tab[V]; -}; - -NAMESPACE_END - -#endif |