#include <blumshub.h>
Inheritance diagram for PublicBlumBlumShub:
Definition at line 12 of file blumshub.h.
Public Member Functions | |
PublicBlumBlumShub (const Integer &n, const Integer &seed) | |
unsigned int | GenerateBit () |
generate new random bit and return it | |
byte | GenerateByte () |
generate new random byte and return it | |
void | ProcessData (byte *outString, const byte *inString, unsigned int length) |
encrypt or decrypt an array of bytes of specified length | |
bool | IsSelfInverting () const |
returns whether this transformation is self-inverting (e.g. xor with a keystream) | |
bool | IsForwardTransformation () const |
returns whether this is an encryption object | |
virtual word32 | GenerateWord32 (word32 a=0, word32 b=0xffffffffL) |
generate a random 32 bit word in the range min to max, inclusive | |
virtual void | GenerateBlock (byte *output, unsigned int size) |
generate random array of bytes | |
virtual void | DiscardBytes (unsigned int n) |
generate and discard n bytes | |
template<class IT> | |
void | Shuffle (IT begin, IT end) |
randomly shuffle the specified array, resulting permutation is uniformly distributed | |
virtual std::string | AlgorithmName () const |
returns name of this algorithm, not universally implemented yet | |
virtual Clonable * | Clone () const |
this is not implemented by most classes yet | |
StreamTransformation & | Ref () |
return a reference to this object, | |
virtual unsigned int | MandatoryBlockSize () const |
returns block size, if input must be processed in blocks, otherwise 1 | |
virtual unsigned int | OptimalBlockSize () const |
returns the input block size that is most efficient for this cipher | |
virtual unsigned int | GetOptimalBlockSizeUsed () const |
returns how much of the current block is used up | |
virtual unsigned int | OptimalDataAlignment () const |
returns how input should be aligned for optimal performance | |
virtual void | ProcessLastBlock (byte *outString, const byte *inString, unsigned int length) |
for ciphers where the last block of data is special, encrypt or decrypt the last block of data | |
virtual unsigned int | MinLastBlockSize () const |
returns the minimum size of the last block, 0 indicating the last block is not special | |
void | ProcessString (byte *inoutString, unsigned int length) |
same as ProcessData(inoutString, inoutString, length) | |
void | ProcessString (byte *outString, const byte *inString, unsigned int length) |
same as ProcessData(outString, inString, length) | |
byte | ProcessByte (byte input) |
implemented as {ProcessData(&input, &input, 1); return input;} | |
virtual bool | IsRandomAccess () const =0 |
returns whether this cipher supports random access | |
virtual void | Seek (lword n) |
for random access ciphers, seek to an absolute position | |
Protected Attributes | |
const ModularArithmetic | modn |
const word | maxBits |
Integer | current |
int | bitsLeft |
Friends | |
class | BlumGoldwasserPublicKey |
class | BlumGoldwasserPrivateKey |
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generate new random bit and return it Default implementation is to call GenerateByte() and return its parity. Reimplemented from RandomNumberGenerator. Definition at line 16 of file blumshub.cpp. References bitsLeft, current, Integer::GetBit(), maxBits, modn, and ModularArithmetic::Square(). Referenced by GenerateByte(). |
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encrypt or decrypt an array of bytes of specified length
Implements StreamTransformation. Definition at line 21 of file blumshub.h. |
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generate random array of bytes Default implementation is to call GenerateByte() size times. Reimplemented in KDF2_RNG, NonblockingRng, BlockingRng, and RandomPool. Definition at line 116 of file cryptlib.cpp. References RandomNumberGenerator::GenerateByte(). Referenced by PSSR_MEM_Base::ComputeMessageRepresentative(), DL_GroupParameters_DSA::GenerateRandom(), OAEP_Base::Pad(), Integer::Randomize(), PolynomialMod2::Randomize(), and ElGamalBase::SymmetricEncrypt(). |
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generate and discard n bytes Default implementation is to call GenerateByte() n times. Reimplemented in ARC4_Base. Definition at line 142 of file cryptlib.cpp. References RandomNumberGenerator::GenerateByte(). |
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return a reference to this object, This function is useful for passing a temporary StreamTransformation object to a function that takes a non-const reference. Definition at line 464 of file cryptlib.h. |
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returns the input block size that is most efficient for this cipher
Reimplemented in ECB_OneWay. Definition at line 471 of file cryptlib.h. Referenced by StreamTransformationFilter::FirstPut(). |
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for ciphers where the last block of data is special, encrypt or decrypt the last block of data For now the only use of this function is for CBC-CTS mode. Reimplemented in CBC_CTS_Encryption, and CBC_CTS_Decryption. Definition at line 101 of file cryptlib.cpp. References StreamTransformation::MandatoryBlockSize(), StreamTransformation::MinLastBlockSize(), and StreamTransformation::ProcessData(). Referenced by StreamTransformationFilter::LastPut(). |