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| author | watcherhd <watcherhd@e753b5eb-9565-29b2-b5c5-2cc6f99dfbcb> | 2011-04-21 14:14:52 +0000 |
|---|---|---|
| committer | watcherhd <watcherhd@e753b5eb-9565-29b2-b5c5-2cc6f99dfbcb> | 2011-04-21 14:14:52 +0000 |
| commit | cb4a46e7fbe62d788e66ed6121c717a2d22a4d7c (patch) | |
| tree | 30df260fdc5a1b5a7049c2f8cac8b7ef17513d6d /cryptopp/crypto/blumshub.h | |
| parent | 19b6f534d2e784a1e120bf52c4aa07004798f473 (diff) | |
svn.miranda.im is moving to a new home!
git-svn-id: http://miranda-plugins.googlecode.com/svn/trunk@7 e753b5eb-9565-29b2-b5c5-2cc6f99dfbcb
Diffstat (limited to 'cryptopp/crypto/blumshub.h')
| -rw-r--r-- | cryptopp/crypto/blumshub.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/cryptopp/crypto/blumshub.h b/cryptopp/crypto/blumshub.h new file mode 100644 index 0000000..538c152 --- /dev/null +++ b/cryptopp/crypto/blumshub.h @@ -0,0 +1,53 @@ +#ifndef CRYPTOPP_BLUMSHUB_H
+#define CRYPTOPP_BLUMSHUB_H
+
+#include "modarith.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+class BlumGoldwasserPublicKey;
+class BlumGoldwasserPrivateKey;
+
+//! BlumBlumShub without factorization of the modulus
+class PublicBlumBlumShub : public RandomNumberGenerator,
+ public StreamTransformation
+{
+public:
+ PublicBlumBlumShub(const Integer &n, const Integer &seed);
+
+ unsigned int GenerateBit();
+ byte GenerateByte();
+ void GenerateBlock(byte *output, size_t size);
+ void ProcessData(byte *outString, const byte *inString, size_t length);
+
+ bool IsSelfInverting() const {return true;}
+ bool IsForwardTransformation() const {return true;}
+
+protected:
+ ModularArithmetic modn;
+ word maxBits, bitsLeft;
+ Integer current;
+
+ friend class BlumGoldwasserPublicKey;
+ friend class BlumGoldwasserPrivateKey;
+};
+
+//! BlumBlumShub with factorization of the modulus
+class BlumBlumShub : public PublicBlumBlumShub
+{
+public:
+ // Make sure p and q are both primes congruent to 3 mod 4 and at least 512 bits long,
+ // seed is the secret key and should be about as big as p*q
+ BlumBlumShub(const Integer &p, const Integer &q, const Integer &seed);
+
+ bool IsRandomAccess() const {return true;}
+ void Seek(lword index);
+
+protected:
+ const Integer p, q;
+ const Integer x0;
+};
+
+NAMESPACE_END
+
+#endif
|