diff options
| author | Kirill Volinsky <mataes2007@gmail.com> | 2012-07-20 16:21:49 +0000 |
|---|---|---|
| committer | Kirill Volinsky <mataes2007@gmail.com> | 2012-07-20 16:21:49 +0000 |
| commit | f424a18112032cf61d2871a6b91a5af607c171ae (patch) | |
| tree | 88fedc4e28941ceecda7026f0b06eba6271f91d5 /plugins/CryptoPP/crypto/src/rng.h | |
| parent | bfe1bd0fc087be44c70904aee0fe4276643d206d (diff) | |
CryptoPP:
changed folder structure
git-svn-id: http://svn.miranda-ng.org/main/trunk@1083 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
Diffstat (limited to 'plugins/CryptoPP/crypto/src/rng.h')
| -rw-r--r-- | plugins/CryptoPP/crypto/src/rng.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/plugins/CryptoPP/crypto/src/rng.h b/plugins/CryptoPP/crypto/src/rng.h new file mode 100644 index 0000000000..ff4d6267ba --- /dev/null +++ b/plugins/CryptoPP/crypto/src/rng.h @@ -0,0 +1,77 @@ +// 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
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