Developer Reference for Intel® Integrated Performance Primitives Cryptography 2018

AES_CCMStart

Starts the process of authenticated encryption/decryption for a new message.

Syntax

IppStatus ippsAES_CCMStart(const Ipp8u* pIV, int ivLen, const Ipp8u* pAAD, int aadLen, IppsAES_CCMState* pState);

Include Files

ippcp.h

Parameters

pIV

Pointer to the initialization vector.

ivLen

Length of the initialization vector *pIV (in bytes).

pAAD

Pointer to the additional authenticated data.

aadLen

Length of additional authenticated data *pAAD (in bytes).

pState

Pointer to the IppsAES_CCMState context.

Description

The function resets internal counters and buffers of the *pState context.

Return Values

ippStsNoErr

Indicates no error. Any other value indicates an error or warning.

pState

Indicates an error condition if any of the specified pointers is NULL.

pState

Indicates an error condition if the context parameter does not match the operation.

pState

Indicates an error condition if ivLen < 7 or ivLen > 13 .