QCA::KeyLength Class Reference

#include <QtCrypto>

Public Member Functions
	KeyLength (int min, int max, int multiple)
int	maximum () const
int	minimum () const
int	multiple () const

Detailed Description

Simple container for acceptable key lengths.

The KeyLength specifies the minimum and maximum byte sizes allowed for a key, as well as a "multiple" which the key size must evenly divide into.

As an example, if the key can be 4, 8 or 12 bytes, you can express this as

KeyLength keyLen( 4, 12, 4 );

If you want to express a KeyLength that takes any number of bytes (including zero), you may want to use

#include<limits>
KeyLength( 0, std::numeric_limits<int>::max(), 1 );

Examples

aes-cmac.cpp.

Constructor & Destructor Documentation

KeyLength()

QCA::KeyLength::KeyLength ( int min, int max, int multiple )

inline

Construct a KeyLength object.

Parameters

min	the minimum length of the key, in bytes
max	the maximum length of the key, in bytes
multiple	the number of bytes that the key must be a multiple of.

References multiple().

Member Function Documentation

minimum()

int QCA::KeyLength::minimum ( ) const

inline

Obtain the minimum length for the key, in bytes.

maximum()

int QCA::KeyLength::maximum ( ) const

inline

Obtain the maximum length for the key, in bytes.

multiple()

int QCA::KeyLength::multiple ( ) const

inline

Return the number of bytes that the key must be a multiple of.

If this is one, then anything between minimum and maximum (inclusive) is acceptable.

Referenced by KeyLength().

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

• qca_core.h