Base64 encodes data using DUDE. More...

#include <base64.h>

Inheritance diagram for Base64Encoder:

Public Member Functions
	Base64Encoder (BufferedTransformation *attachment=NULL, bool insertLineBreaks=true, int maxLineLength=72)
	Construct a Base64Encoder.

void	IsolatedInitialize (const NameValuePairs &parameters)
	Initialize or reinitialize this object, without signal propagation.

Public Member Functions inherited from SimpleProxyFilter
	SimpleProxyFilter (BufferedTransformation filter, BufferedTransformation attachment)
	Construct a SimpleProxyFilter.

void	FirstPut (const byte *inString)

void	LastPut (const byte *inString, size_t length)
	Input the last block of data.

Public Member Functions inherited from ProxyFilter
	ProxyFilter (BufferedTransformation filter, size_t firstSize, size_t lastSize, BufferedTransformation attachment)
	Construct a ProxyFilter.

bool	IsolatedFlush (bool hardFlush, bool blocking)
	Flushes data buffered by this object, without signal propagation.

void	SetFilter (Filter *filter)
	Sets the OutputProxy filter.

void	NextPutMultiple (const byte *s, size_t len)

void	NextPutModifiable (byte *inString, size_t length)

Public Member Functions inherited from FilterWithBufferedInput
	FilterWithBufferedInput (BufferedTransformation *attachment)
	Construct a FilterWithBufferedInput with an attached transformation.

	FilterWithBufferedInput (size_t firstSize, size_t blockSize, size_t lastSize, BufferedTransformation *attachment)
	Construct a FilterWithBufferedInput with an attached transformation.

void	IsolatedInitialize (const NameValuePairs &parameters)
	Initialize or reinitialize this object, without signal propagation.

size_t	Put2 (const byte *inString, size_t length, int messageEnd, bool blocking)
	Input multiple bytes for processing.

size_t	PutModifiable2 (byte *inString, size_t length, int messageEnd, bool blocking)
	Input multiple bytes that may be modified by callee.

void	ForceNextPut ()
	Flushes data buffered by this object.

Public Member Functions inherited from Filter
	Filter (BufferedTransformation *attachment=NULL)
	Construct a Filter.

bool	Attachable ()
	Determine if attachable.

BufferedTransformation *	AttachedTransformation ()
	Retrieve attached transformation.

const BufferedTransformation *	AttachedTransformation () const
	Retrieve attached transformation.

void	Detach (BufferedTransformation *newAttachment=NULL)
	Replace an attached transformation.

size_t	TransferTo2 (BufferedTransformation &target, lword &transferBytes, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true)
	Transfer bytes from this object to another BufferedTransformation.

size_t	CopyRangeTo2 (BufferedTransformation &target, lword &begin, lword end=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) const
	Copy bytes from this object to another BufferedTransformation.

void	Initialize (const NameValuePairs &parameters=g_nullNameValuePairs, int propagation=-1)
	Initialize or reinitialize this object, with signal propagation.

bool	Flush (bool hardFlush, int propagation=-1, bool blocking=true)
	Flush buffered input and/or output, with signal propagation.

bool	MessageSeriesEnd (int propagation=-1, bool blocking=true)
	Marks the end of a series of messages, with signal propagation.

Public Member Functions inherited from BufferedTransformation
	BufferedTransformation ()
	Construct a BufferedTransformation.

BufferedTransformation &	Ref ()
	Provides a reference to this object.

virtual void	Attach (BufferedTransformation *newAttachment)
	Add newAttachment to the end of attachment chain.

size_t	Put (byte inByte, bool blocking=true)
	Input a byte for processing.

size_t	Put (const byte *inString, size_t length, bool blocking=true)
	Input a byte buffer for processing.

size_t	PutWord16 (word16 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 16-bit word for processing.

size_t	PutWord32 (word32 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 32-bit word for processing.

size_t	PutWord64 (word64 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 64-bit word for processing.

virtual byte *	CreatePutSpace (size_t &size)
	Request space which can be written into by the caller.

virtual bool	CanModifyInput () const
	Determines whether input can be modified by the callee.

size_t	PutModifiable (byte *inString, size_t length, bool blocking=true)
	Input multiple bytes that may be modified by callee.

bool	MessageEnd (int propagation=-1, bool blocking=true)
	Signals the end of messages to the object.

size_t	PutMessageEnd (const byte *inString, size_t length, int propagation=-1, bool blocking=true)
	Input multiple bytes for processing and signal the end of a message.

unsigned int	GetMaxWaitObjectCount () const
	Retrieves the maximum number of waitable objects.

void	GetWaitObjects (WaitObjectContainer &container, CallStack const &callStack)
	Retrieves waitable objects.

virtual bool	IsolatedMessageSeriesEnd (bool blocking)
	Marks the end of a series of messages, without signal propagation.

virtual void	SetAutoSignalPropagation (int propagation)
	Set propagation of automatically generated and transferred signals.

virtual int	GetAutoSignalPropagation () const
	Retrieve automatic signal propagation value.

virtual lword	MaxRetrievable () const
	Provides the number of bytes ready for retrieval.

virtual bool	AnyRetrievable () const
	Determines whether bytes are ready for retrieval.

virtual size_t	Get (byte &outByte)
	Retrieve a 8-bit byte.

virtual size_t	Get (byte *outString, size_t getMax)
	Retrieve a block of bytes.

virtual size_t	Peek (byte &outByte) const
	Peek a 8-bit byte.

virtual size_t	Peek (byte *outString, size_t peekMax) const
	Peek a block of bytes.

size_t	GetWord16 (word16 &value, ByteOrder order=BIG_ENDIAN_ORDER)
	Retrieve a 16-bit word.

size_t	GetWord32 (word32 &value, ByteOrder order=BIG_ENDIAN_ORDER)
	Retrieve a 32-bit word.

size_t	GetWord64 (word64 &value, ByteOrder order=BIG_ENDIAN_ORDER)
	Retrieve a 64-bit word.

size_t	PeekWord16 (word16 &value, ByteOrder order=BIG_ENDIAN_ORDER) const
	Peek a 16-bit word.

size_t	PeekWord32 (word32 &value, ByteOrder order=BIG_ENDIAN_ORDER) const
	Peek a 32-bit word.

size_t	PeekWord64 (word64 &value, ByteOrder order=BIG_ENDIAN_ORDER) const
	Peek a 64-bit word.

lword	TransferTo (BufferedTransformation &target, lword transferMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL)
	move transferMax bytes of the buffered output to target as input

virtual lword	Skip (lword skipMax=LWORD_MAX)
	Discard skipMax bytes from the output buffer.

lword	CopyTo (BufferedTransformation &target, lword copyMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL) const
	Copy bytes from this object to another BufferedTransformation.

lword	CopyRangeTo (BufferedTransformation &target, lword position, lword copyMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL) const
	Copy bytes from this object using an index to another BufferedTransformation.

virtual lword	TotalBytesRetrievable () const
	Provides the number of bytes ready for retrieval.

virtual unsigned int	NumberOfMessages () const
	Provides the number of meesages processed by this object.

virtual bool	AnyMessages () const
	Determines if any messages are available for retrieval.

virtual bool	GetNextMessage ()
	Start retrieving the next message.

virtual unsigned int	SkipMessages (unsigned int count=UINT_MAX)
	Skip a number of meessages.

unsigned int	TransferMessagesTo (BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL)
	Transfer messages from this object to another BufferedTransformation.

unsigned int	CopyMessagesTo (BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL) const
	Copy messages from this object to another BufferedTransformation.

virtual void	SkipAll ()
	Skip all messages in the series.

void	TransferAllTo (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL)
	Transfer all bytes from this object to another BufferedTransformation.

void	CopyAllTo (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL) const
	Copy messages from this object to another BufferedTransformation.

virtual bool	GetNextMessageSeries ()
	Retrieve the next message in a series.

virtual unsigned int	NumberOfMessagesInThisSeries () const
	Provides the number of messages in a series.

virtual unsigned int	NumberOfMessageSeries () const
	Provides the number of messages in a series.

size_t	TransferMessagesTo2 (BufferedTransformation &target, unsigned int &messageCount, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true)
	Transfer messages from this object to another BufferedTransformation.

size_t	TransferAllTo2 (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true)
	Transfer all bytes from this object to another BufferedTransformation.

size_t	ChannelPut (const std::string &channel, byte inByte, bool blocking=true)
	Input a byte for processing on a channel.

size_t	ChannelPut (const std::string &channel, const byte *inString, size_t length, bool blocking=true)
	Input a byte buffer for processing on a channel.

size_t	ChannelPutModifiable (const std::string &channel, byte *inString, size_t length, bool blocking=true)
	Input multiple bytes that may be modified by callee on a channel.

size_t	ChannelPutWord16 (const std::string &channel, word16 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 16-bit word for processing on a channel.

size_t	ChannelPutWord32 (const std::string &channel, word32 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 32-bit word for processing on a channel.

size_t	ChannelPutWord64 (const std::string &channel, word64 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 64-bit word for processing on a channel.

bool	ChannelMessageEnd (const std::string &channel, int propagation=-1, bool blocking=true)
	Signal the end of a message.

size_t	ChannelPutMessageEnd (const std::string &channel, const byte *inString, size_t length, int propagation=-1, bool blocking=true)
	Input multiple bytes for processing and signal the end of a message.

virtual byte *	ChannelCreatePutSpace (const std::string &channel, size_t &size)
	Request space which can be written into by the caller.

virtual size_t	ChannelPut2 (const std::string &channel, const byte *inString, size_t length, int messageEnd, bool blocking)
	Input multiple bytes for processing on a channel.

virtual size_t	ChannelPutModifiable2 (const std::string &channel, byte *inString, size_t length, int messageEnd, bool blocking)
	Input multiple bytes that may be modified by callee on a channel.

virtual bool	ChannelFlush (const std::string &channel, bool hardFlush, int propagation=-1, bool blocking=true)
	Flush buffered input and/or output on a channel.

virtual bool	ChannelMessageSeriesEnd (const std::string &channel, int propagation=-1, bool blocking=true)
	Marks the end of a series of messages on a channel.

virtual void	SetRetrievalChannel (const std::string &channel)
	Sets the default retrieval channel.

Public Member Functions inherited from Algorithm
	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms.

virtual std::string	AlgorithmName () const
	Provides the name of this algorithm.

virtual std::string	AlgorithmProvider () const
	Retrieve the provider of this algorithm.

Public Member Functions inherited from Clonable
virtual Clonable *	Clone () const
	Copies this object.

Public Member Functions inherited from Waitable
bool	Wait (unsigned long milliseconds, CallStack const &callStack)
	Wait on this object.

Detailed Description

Base64 encodes data using DUDE.

Base64 encodes data per RFC 4648, Base 64 Encoding.

Definition at line 16 of file base64.h.

Constructor & Destructor Documentation

◆ Base64Encoder()

Base64Encoder::Base64Encoder	(	BufferedTransformation *	attachment = NULL,
		bool	insertLineBreaks = true,
		int	maxLineLength = 72 )

inline

Construct a Base64Encoder.

Parameters

attachment	a BufferedTrasformation to attach to this object
insertLineBreaks	a BufferedTrasformation to attach to this object
maxLineLength	the length of a line if line breaks are used

Base64Encoder constructs a default encoder. The constructor lacks a parameter for padding, and you must use IsolatedInitialize() to modify the Base64Encoder after construction.

See also: IsolatedInitialize() for an example of modifying an encoder after construction.

Definition at line 26 of file base64.h.

Member Function Documentation

◆ IsolatedInitialize()

void Base64Encoder::IsolatedInitialize ( const NameValuePairs & parameters )

virtual

Initialize or reinitialize this object, without signal propagation.

Parameters

parameters a set of NameValuePairs used to initialize this object

IsolatedInitialize() is used to initialize or reinitialize an object using a variable number of arbitrarily typed arguments. IsolatedInitialize() does not call Initialize() on attached transformations. If initialization should be propagated, then use the Initialize() function.

The following code modifies the padding and line break parameters for an encoder:

    Base64Encoder encoder;
    AlgorithmParameters params = MakeParameters(Pad(), false)(InsertLineBreaks(), false);
    encoder.IsolatedInitialize(params);

You can change the encoding to RFC 4648 web safe alphabet by performing the following:

    Base64Encoder encoder;
    const byte ALPHABET[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
    AlgorithmParameters params = MakeParameters(Name::EncodingLookupArray(),(const byte *)ALPHABET);
    encoder.IsolatedInitialize(params);

If you change the encoding alphabet, then you will need to change the decoding alphabet and the decoder's lookup table.

See also: Base64URLEncoder for an encoder that provides the web safe alphabet, and Base64Decoder::IsolatedInitialize() for an example of modifying a decoder's lookup table after construction.

Reimplemented from BufferedTransformation.

Definition at line 52 of file base64.cpp.

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

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ Base64Encoder()

Member Function Documentation

◆ IsolatedInitialize()