Concrete base class to assist with implementing single-key XTS mode for 128-bit block ciphers. More...

#include <XTS.h>

Inheritance diagram for XTSSingleKeyCommon:

Public Member Functions
virtual	~XTSSingleKeyCommon ()
	Clears all sensitive information and destroys this object.

size_t	keySize () const
	Gets the size of the key for single-pkey XTS mode. More...

bool	setKey (const uint8_t *key, size_t len)
	Sets the key to use for single-keyh XTS mode. More...

Public Member Functions inherited from XTSCommon
virtual	~XTSCommon ()
	Clears all sensitive information and destroys this object.

size_t	tweakSize () const
	Gets the maximum supported size for the tweak. More...

size_t	sectorSize () const
	Gets the size of sectors encrypted or decrypted by this class. More...

bool	setSectorSize (size_t size)
	Sets the size of sectors encrypted or decrypted by this class. More...

bool	setTweak (const uint8_t *tweak, size_t len)
	Sets the tweak value for the current sector to encrypt or decrypt. More...

void	encryptSector (uint8_t output, const uint8_t input)
	Encrypts an entire sector of data. More...

void	decryptSector (uint8_t output, const uint8_t input)
	Decrypts an entire sector of data. More...

void	clear ()
	Clears all security-sensitive state from this XTS object.

Protected Member Functions
	XTSSingleKeyCommon ()
	Constructs an XTS object with a default sector size of 512 bytes.

Protected Member Functions inherited from XTSCommon
	XTSCommon ()
	Constructs an XTS object with a default sector size of 512 bytes.

void	setBlockCiphers (BlockCipher cipher1, BlockCipher cipher2)
	Sets the two block ciphers to use for XTS mode. More...

Detailed Description

Concrete base class to assist with implementing single-key XTS mode for 128-bit block ciphers.

References: IEEE Std. 1619-2007, NIST SP 800-38E, a href="http://web.cs.ucdavis.edu/~rogaway/papers/offsets.pdf">XEX.

Definition at line 66 of file XTS.h.

Member Function Documentation

size_t XTSSingleKeyCommon::keySize ( ) const

virtual

Gets the size of the key for single-pkey XTS mode.

The key size for single-key XTS mode is the same as the key size for the underlying block cipher.

Reimplemented from XTSCommon.

Definition at line 315 of file XTS.cpp.

bool XTSSingleKeyCommon::setKey	(	const uint8_t *	key,
		size_t	len
	)

virtual

Sets the key to use for single-keyh XTS mode.

Parameters

key	Points to the key.
len	The size of the key in bytes which must be same as the size of the underlying block cipher.

This function should be followed by a call to setTweak() to specify the sector-specific tweak.

Reimplemented from XTSCommon.

Definition at line 334 of file XTS.cpp.

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