QuickCrypt Library

C++ Interface

CDESX::CDESX

CDESX( SL_CIPHER_DIR dir, const unsigned char* pKey );

CDESX( SL_CIPHER_DIR dir, const unsigned char* pKey, unsigned int );

Parameters

dir

    [in] Cipher direction. It can be SLC_ENCRYPT or SLC_DECRYPT.

 pKey

    [in] Pointer to the secret key.

The third parameter of type unsigned int was added for consistency with other encryption algorithms and it is ignored.

Remarks

Both constructors work in the same way.

They construct a CDESX object and initialize it with the secret key pointed by pKey. Note that the first CDESX::DEFAULTKEYSIZE bytes of the memory buffer pointed by pKey are used as the secret key.

The CDESX object is initialized for encryption if dir is SLC_ENCRYPT, or it is initialized for decryption if dir is SLC_DECRYPT.

Example

//Define the key for DESX encryption algorithm
char key[CDESX::DEFAULTKEYSIZE] = 
{
    'v','e','r','y','l','o','n','g',

    'p','a','s','s','w','o','r','d',

    '0','1','2','3','4','5','6','7'
};

//Declare a local CDESX object
CDESX cipher( SLC_ENCRYPT, (const unsigned char*)key );

//Declare a dynamic CDESX object
CDESX* pCipher = new CDESX( SLC_DECRYPT, (const unsigned char*)key );

CDESX Overview   |   Class Members   |   Useful Links

See Also    CDESX::ProcessBlock