Fabcoin Core  0.16.2
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Protected Member Functions | Protected Attributes | List of all members
SosemanukPolicy Class Reference

Sosemanuk stream cipher implementation. More...

#include <sosemanuk.h>

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Protected Member Functions

void CipherSetKey (const NameValuePairs &params, const byte *key, size_t length)
 Key the cipher. More...
 
void OperateKeystream (KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount)
 Operates the keystream. More...
 
void CipherResynchronize (byte *keystreamBuffer, const byte *iv, size_t length)
 Resynchronize the cipher. More...
 
bool CipherIsRandomAccess () const
 Flag indicating random access. More...
 

Protected Attributes

FixedSizeSecBlock< word32, 25 *4 > m_key
 
FixedSizeAlignedSecBlock< word32, 12 > m_state
 

Additional Inherited Members

- Public Types inherited from AdditiveCipherConcretePolicy< word32, 20 >
typedef word32 WordType
 
- Public Member Functions inherited from AdditiveCipherConcretePolicy< word32, 20 >
unsigned int GetAlignment () const
 Provides data alignment requirements. More...
 
unsigned int GetBytesPerIteration () const
 Provides number of bytes operated upon during an iteration. More...
 
unsigned int GetIterationsToBuffer () const
 Provides buffer size based on iterations. More...
 
bool CanOperateKeystream () const
 Flag indicating. More...
 
- Public Member Functions inherited from AdditiveCipherAbstractPolicy
virtual ~AdditiveCipherAbstractPolicy ()
 
virtual unsigned int GetOptimalBlockSize () const
 Provides number of ideal bytes to process. More...
 
virtual void WriteKeystream (byte *keystream, size_t iterationCount)
 Generate the keystream. More...
 
virtual void SeekToIteration (lword iterationCount)
 Seeks to a random position in the stream. More...
 
- Public Member Functions inherited from SosemanukInfo
CRYPTOPP_STATIC_CONSTEXPR const char * StaticAlgorithmName ()
 
- Public Member Functions inherited from VariableKeyLength< 16, 1, 32, 1, SimpleKeyingInterface::UNIQUE_IV, 16 >
CRYPTOPP_STATIC_CONSTEXPR size_t CRYPTOPP_API StaticGetValidKeyLength (size_t keylength)
 The minimum key length used by the algorithm provided as a constant. More...
 

Detailed Description

Sosemanuk stream cipher implementation.

Since
Crypto++ 5.5

Definition at line 32 of file sosemanuk.h.

Member Function Documentation

bool SosemanukPolicy::CipherIsRandomAccess ( ) const
inlineprotectedvirtual

Flag indicating random access.

Returns
true if the cipher is seekable, false otherwise
See also
SeekToIteration()

Implements AdditiveCipherAbstractPolicy.

Definition at line 38 of file sosemanuk.h.

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void SosemanukPolicy::CipherResynchronize ( byte keystreamBuffer,
const byte iv,
size_t  length 
)
protectedvirtual

Resynchronize the cipher.

Parameters
keystreamBufferthe keystream buffer
iva byte array used to resynchronize the cipher
lengththe size of the IV array

Reimplemented from AdditiveCipherAbstractPolicy.

Definition at line 28 of file sosemanuk.cpp.

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void SosemanukPolicy::CipherSetKey ( const NameValuePairs params,
const byte key,
size_t  length 
)
protectedvirtual

Key the cipher.

Parameters
paramsset of NameValuePairs use to initialize this object
keya byte array used to key the cipher
lengththe size of the key array

Implements AdditiveCipherAbstractPolicy.

Definition at line 22 of file sosemanuk.cpp.

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void SosemanukPolicy::OperateKeystream ( KeystreamOperation  operation,
byte output,
const byte input,
size_t  iterationCount 
)
protectedvirtual

Operates the keystream.

Parameters
operationthe operation with additional flags
outputthe output buffer
inputthe input buffer
iterationCountthe number of iterations to perform on the input

OperateKeystream() will attempt to operate upon GetOptimalBlockSize() buffer, which will be derived from GetBytesPerIteration().

See also
CanOperateKeystream(), OperateKeystream(), WriteKeystream(), KeystreamOperation()

Implements AdditiveCipherConcretePolicy< word32, 20 >.

Definition at line 327 of file sosemanuk.cpp.

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Member Data Documentation

FixedSizeSecBlock<word32, 25*4> SosemanukPolicy::m_key
protected

Definition at line 44 of file sosemanuk.h.

FixedSizeAlignedSecBlock<word32, 12> SosemanukPolicy::m_state
protected

Definition at line 45 of file sosemanuk.h.


The documentation for this class was generated from the following files: