diff options
author | Jeffrey Walton <noloader@gmail.com> | 2015-11-05 01:59:46 -0500 |
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committer | Jeffrey Walton <noloader@gmail.com> | 2015-11-05 01:59:46 -0500 |
commit | 48809d4e85c125814425c621d8d0d89f95405924 (patch) | |
tree | 1010fd16c4b1199f3d27dd726dda241a2bd29f83 /blumshub.h | |
parent | 025337a94aceb75d188149db70c2094673772816 (diff) | |
download | cryptopp-git-48809d4e85c125814425c621d8d0d89f95405924.tar.gz |
CRYPTOPP 5.6.3 RC6 checkin
Diffstat (limited to 'blumshub.h')
-rw-r--r-- | blumshub.h | 101 |
1 files changed, 52 insertions, 49 deletions
@@ -1,49 +1,52 @@ -#ifndef CRYPTOPP_BLUMSHUB_H -#define CRYPTOPP_BLUMSHUB_H - -#include "config.h" -#include "integer.h" -#include "modarith.h" - -NAMESPACE_BEGIN(CryptoPP) - -//! 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; -}; - -//! 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 +#ifndef CRYPTOPP_BLUMSHUB_H
+#define CRYPTOPP_BLUMSHUB_H
+
+#include "cryptlib.h"
+#include "modarith.h"
+#include "integer.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! 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
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