QuickCrypt Library

C++ Interface

CCounterMode::Init

void Init( const unsigned char* pIV, const unsigned char* pKey, unsigned int nKeyLen = DEFAULTKEYSIZE );

void Init( const unsigned char* pIV );

Parameters

 pIV

    [in] Pointer to the initialization vector.

 pKey

    [in] Pointer to the secret key.

 nKeyLen

    [in] Length in bytes of the secret key.

Remarks

Both member functions initialize the CCounterMode object. A brief description of both of them follows.

• void Init( const unsigned char* pIV, const unsigned char* pKey, unsigned int nKeyLen = DEFAULTKEYSIZE );

Call this member function to initialize the CCounterMode object with the initialization vector pointed by pIV, and the secret key pointed by pKey.

Notes. 

• The first CCounterMode<T>::BLOCKSIZE bytes of the memory buffer pointed by pIV are used as the initialization vector.

• nKeyLen can be CCounterMode<T>::DEFAULTKEYSIZE bytes. For Rijndael (AES) algorithm it can also be 24 or 32 bytes. For Blowfish algorithm it can be in the range 1 through 72 bytes.

• void Init( const unsigned char* pIV );

Call this member function to initialize the CCounterMode object with the initialization vector pointed by pIV without changing the key set by previous initialization. Note that the first CCounterMode<T>::BLOCKSIZE bytes of the memory buffer pointed by pIV are used as the initialization vector.

CCounterMode Overview   |   Class Members   |   Useful Links

See Also    CCounterMode::Process, CCounterMode::Seek