AESCounterBase Class Reference

Base class for AESCounter<S>. More...

#include <AESCounter.h>

Inheritance diagram for AESCounterBase:

Public Member Functions
void	_readFromStream (std::istream &stream, unsigned bytes, uint8_t *buffer)
	Reads hex encoded data from stream. More...
void	_writeToStream (std::ostream &stream, unsigned bytes, const uint8_t *buffer) const
	Writes hex encoded data to stream. More...
void	_readFromStream (std::istream &stream, unsigned bytes, uint8_t *buffer)
	Reads hex encoded data from stream.
void	_writeToStream (std::ostream &stream, unsigned bytes, const uint8_t *buffer) const
	Writes hex encoded data to stream.

Detailed Description

Base class for AESCounter<S>.

This class implements some bigger, non-template methods used in the AESCounter<S> templated subclass.

Member Function Documentation

void AESCounterBase::_readFromStream	(	std::istream &	stream,
		unsigned	bytes,
		uint8_t *	buffer
	)

Reads hex encoded data from stream.

The data from the stream is expected to be hex encoded. Each two characters from the stream encode a single result byte. All non-hexadecimal characters are ignored, including newlines. Every two hexadecimal characters form an encoded byte. This is true even if the two characters representing the upper and lower nibbles are separated by whitespace or other characters.

Postcondition

The stream read head is left pointing just after the last encoded byte.

Parameters

	stream	Input stream to read from.
	bytes	Number of encoded bytes to read. This is the number of result bytes, not the count of bytes to read from the stream.
[out]	buffer	Pointer to the buffer where decoded data is written.

Exceptions

std::runtime_error

This exception will be thrown if less data than required is available from stream, or if some other error occurs while reading from stream.

void AESCounterBase::_writeToStream	(	std::ostream &	stream,
		unsigned	bytes,
		const uint8_t *	buffer
	)		const

Writes hex encoded data to stream.

Counter data is written to stream as a sequence of hex encoded octets, each two characters long. No spaces or newlines are inserted between the encoded octets or at the end of the sequence.

Exceptions

std::runtime_error

Thrown if the stream reports an error while writing the key data.

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

• apps/elftosb/common/AESCounter.h
• AESCounter.cpp