ARCFourPack, ARCFourUnpack

Packs/unpacks the IppsARCFourSpec context into/from a user-defined buffer.

Syntax

IppStatus ippsARCFourPack (const IppsARCFourSpec* pCtx, Ipp8u* pBuffer);

IppStatus ippsARCFourUnpack (const Ipp8u* pBuffer, IppsARCFourSpec* pCtx);

Parameters

pCtx	Pointer to the IppsARCFourSpec context.
pBuffer	Pointer to the user-defined buffer.

Description

This functions are declared in the ippcp.h file. The ARCFourPack function transforms the *pCtx context to a position-independent form and stores it in the *pBuffer buffer. The ARCFourUnpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsARCFourSpec context. The ARCFourPack and ARCFourUnpack functions enable replacing the position-dependent IppsARCFourSpec context in the memory.

Call the ARCFourGetSize function prior to ARCFourPack/ARCFourUnpack to determine the size of the buffer.

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or warning.
ippStsNullPtrErr	Indicates an error condition if any of the specified pointers is NULL.