#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 | GenerateBlock (byte *output, size_t size) |
| generate random array of bytes | |
| void | ProcessData (byte *outString, const byte *inString, size_t 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 void | IncorporateEntropy (const byte *input, size_t length) |
| update RNG state with additional unpredictable values | |
| virtual bool | CanIncorporateEntropy () const |
| returns true if IncorporateEntropy is implemented | |
| virtual word32 | GenerateWord32 (word32 a=0, word32 b=0xffffffffL) |
| generate a random 32 bit word in the range min to max, inclusive | |
| virtual void | DiscardBytes (size_t n) |
| generate and discard n bytes | |
| virtual void | GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length) |
| generate random bytes as input to a BufferedTransformation | |
| 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, size_t 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, size_t length) |
| same as ProcessData(inoutString, inoutString, length) | |
| void | ProcessString (byte *outString, const byte *inString, size_t 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 | |
| ModularArithmetic | modn |
| word | maxBits |
| word | bitsLeft |
| Integer | current |
Friends | |
| class | BlumGoldwasserPublicKey |
| class | BlumGoldwasserPrivateKey |
| unsigned int PublicBlumBlumShub::GenerateBit | ( | ) | [virtual] |
generate new random bit and return it
Default implementation is to call GenerateByte() and return its lowest bit.
Reimplemented from RandomNumberGenerator.
Definition at line 16 of file blumshub.cpp.
References bitsLeft, current, Integer::GetBit(), maxBits, modn, and ModularArithmetic::Square().
Referenced by GenerateByte().
| void PublicBlumBlumShub::ProcessData | ( | byte * | outString, | |
| const byte * | inString, | |||
| size_t | length | |||
| ) | [virtual] |
encrypt or decrypt an array of bytes of specified length
Implements StreamTransformation.
Definition at line 41 of file blumshub.cpp.
References GenerateByte().
| StreamTransformation& StreamTransformation::Ref | ( | ) | [inline, inherited] |
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 470 of file cryptlib.h.
| virtual unsigned int StreamTransformation::OptimalBlockSize | ( | ) | const [inline, virtual, inherited] |
returns the input block size that is most efficient for this cipher
Reimplemented in ECB_OneWay.
Definition at line 477 of file cryptlib.h.
Referenced by StreamTransformationFilter::FirstPut().
| void StreamTransformation::ProcessLastBlock | ( | byte * | outString, | |
| const byte * | inString, | |||
| size_t | length | |||
| ) | [virtual, inherited] |
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 119 of file cryptlib.cpp.
References StreamTransformation::MandatoryBlockSize(), StreamTransformation::MinLastBlockSize(), and StreamTransformation::ProcessData().
Referenced by StreamTransformationFilter::LastPut().
1.5.2