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SecretRecovery Class Reference

#include <ida.h>

Inheritance diagram for SecretRecovery:

RawIDA Filter BufferedTransformation Algorithm Waitable Clonable List of all members.

Detailed Description

a variant of Shamir's Secret Sharing Algorithm

Definition at line 74 of file ida.h.

Public Member Functions

 SecretRecovery (int threshold, BufferedTransformation *attachment=NULL, bool removePadding=true)
void Initialize (const NameValuePairs &parameters=g_nullNameValuePairs, int propagation=-1)
 initialize or reinitialize this object

unsigned int GetThreshold () const
void AddOutputChannel (word32 channelId)
void ChannelData (word32 channelId, const byte *inString, unsigned int length, bool messageEnd)
unsigned int InputBuffered (word32 channelId) const
void ChannelInitialize (const std::string &channel, const NameValuePairs &parameters=g_nullNameValuePairs, int propagation=-1)
unsigned int ChannelPut2 (const std::string &channel, const byte *begin, unsigned int length, int messageEnd, bool blocking)
void SetAutoSignalPropagation (int propagation)
int GetAutoSignalPropagation () const
bool Flush (bool completeFlush, int propagation=-1, bool blocking=true)
bool IsolatedFlush (bool hardFlush, bool blocking)
bool ChannelFlush (const std::string &channel, bool hardFlush, int propagation=-1, bool blocking=true)
void MessageSeriesEnd (int propagation)
bool MessageSeriesEnd (int propagation=-1, bool blocking=true)
 mark end of a series of messages

byte * CreatePutSpace (unsigned int &size)
unsigned int Put2 (const byte *begin, unsigned int length, int messageEnd, bool blocking)
unsigned int PutModifiable2 (byte *begin, byte *end, int messageEnd, bool blocking)
byte * ChannelCreatePutSpace (const std::string &channel, unsigned int &size)
bool ChannelPutModifiable (const std::string &channel, byte *inString, unsigned int length)
bool Attachable ()
 returns whether this object allows attachment

BufferedTransformationAttachedTransformation ()
 returns the object immediately attached to this object or NULL for no attachment

const BufferedTransformationAttachedTransformation () const
void Detach (BufferedTransformation *newAttachment=NULL)
 delete the current attachment chain and replace it with newAttachment

unsigned int TransferTo2 (BufferedTransformation &target, unsigned long &transferBytes, const std::string &channel=NULL_CHANNEL, bool blocking=true)
 

unsigned int CopyRangeTo2 (BufferedTransformation &target, unsigned long &begin, unsigned long end=ULONG_MAX, const std::string &channel=NULL_CHANNEL, bool blocking=true) const
BufferedTransformationRef ()
 return a reference to this object

virtual std::string AlgorithmName () const
 returns name of this algorithm, not universally implemented yet

virtual ClonableClone () const
 this is not implemented by most classes yet

bool Wait (unsigned long milliseconds)
 wait on this object


Static Public Attributes

const std::string NULL_CHANNEL

Protected Member Functions

void FlushOutputQueues ()
void OutputMessageEnds ()
unsigned int InsertInputChannel (word32 channelId)
unsigned int LookupInputChannel (word32 channelId) const
void ComputeV (unsigned int)
void PrepareInterpolation ()
void ProcessInputQueues ()
virtual bool InputBufferIsEmpty () const
virtual void NotifyAttachmentChange ()
virtual BufferedTransformationNewDefaultAttachment () const
void Insert (Filter *nextFilter)
virtual bool ShouldPropagateMessageEnd () const
virtual bool ShouldPropagateMessageSeriesEnd () const
void PropagateInitialize (const NameValuePairs &parameters, int propagation, const std::string &channel=NULL_CHANNEL)
unsigned int Output (int outputSite, const byte *inString, unsigned int length, int messageEnd, bool blocking, const std::string &channel=NULL_CHANNEL)
bool OutputMessageEnd (int outputSite, int propagation, bool blocking, const std::string &channel=NULL_CHANNEL)
bool OutputFlush (int outputSite, bool hardFlush, int propagation, bool blocking, const std::string &channel=NULL_CHANNEL)
bool OutputMessageSeriesEnd (int outputSite, int propagation, bool blocking, const std::string &channel=NULL_CHANNEL)

Static Protected Member Functions

int DecrementPropagation (int propagation)

Protected Attributes

bool m_pad
std::map< word32, unsigned
int > 
m_inputChannelMap
std::map< word32, unsigned
int >::iterator 
m_lastMapPosition
std::vector< MessageQueuem_inputQueues
std::vector< word32 > m_inputChannelIds
std::vector< word32 > m_outputChannelIds
std::vector< word32 > m_outputToInput
std::vector< std::string > m_outputChannelIdStrings
std::vector< ByteQueuem_outputQueues
int m_threshold
unsigned int m_channelsReady
unsigned int m_channelsFinished
std::vector< SecBlock< word32 > > m_v
SecBlock< word32 > m_u
SecBlock< word32 > m_w
SecBlock< word32 > m_y
unsigned int m_inputPosition
int m_continueAt


Member Function Documentation

bool Filter::MessageSeriesEnd int  propagation = -1,
bool  blocking = true
[virtual, inherited]
 

mark end of a series of messages

There should be a MessageEnd immediately before MessageSeriesEnd.

Reimplemented from BufferedTransformation.

Definition at line 84 of file filters.cpp.

virtual unsigned int BufferedTransformation::PutModifiable2 byte *  inString,
unsigned int  length,
int  messageEnd,
bool  blocking
[inline, virtual, inherited]
 

input multiple bytes that may be modified by callee for blocking or non-blocking processing

Parameters:
messageEnd means how many filters to signal MessageEnd to, including this one

Reimplemented in FilterWithBufferedInput.

Definition at line 738 of file cryptlib.h.

bool Filter::Attachable  )  [inline, virtual, inherited]
 

returns whether this object allows attachment

Some BufferedTransformation objects (e.g. Filter objects) allow other BufferedTransformation objects to be attached. When this is done, the first object instead of buffering its output, sents that output to the attached object as input. The entire attachment chain is deleted when the anchor object is destructed.

Reimplemented from BufferedTransformation.

Definition at line 19 of file filters.h.

BufferedTransformation& BufferedTransformation::Ref  )  [inline, inherited]
 

return a reference to this object

This function is useful for passing a temporary BufferedTransformation object to a function that takes a non-const reference.

Definition at line 702 of file cryptlib.h.

unsigned long BufferedTransformation::MaxRetrievable  )  const [virtual, inherited]
 

returns number of bytes that is currently ready for retrieval

All retrieval functions return the actual number of bytes retrieved, which is the lesser of the request number and MaxRetrievable().

Reimplemented in FileStore, RandomNumberStore, NullStore, MessageQueue, ByteQueue, and RandomPool.

Definition at line 229 of file cryptlib.cpp.

References BufferedTransformation::AttachedTransformation(), and BufferedTransformation::CopyTo().

Referenced by RandomNumberStore::AnyRetrievable(), and Integer::BERDecode().

bool BufferedTransformation::GetNextMessage  )  [virtual, inherited]
 

start retrieving the next message

Returns false if no more messages exist or this message is not completely retrieved.

Reimplemented in MessageQueue, and Store.

Definition at line 318 of file cryptlib.cpp.

References BufferedTransformation::AnyMessages(), and BufferedTransformation::AttachedTransformation().

bool Waitable::Wait unsigned long  milliseconds  )  [inherited]
 

wait on this object

same as creating an empty container, calling GetWaitObjects(), and calling Wait() on the container

Definition at line 101 of file wait.cpp.

References Waitable::GetWaitObjects(), and WaitObjectContainer::Wait().

Referenced by NetworkSource::GeneralPump2(), and NetworkSink::TimedFlush().


The documentation for this class was generated from the following file:
Generated on Tue Jul 8 23:35:31 2003 for Crypto++ by doxygen 1.3.2