Rijndael256Pack, Rijndael256Unpack

Packs/unpacks the IppsRijndael256Spec context into/from a user-defined buffer.

Syntax

IppStatus ippsRijndael256Pack (const IppsRijndael256Spec* pCtx, Ipp8u* pBuffer);

IppStatus ippsRijndael256Unpack (const Ipp8u* pBuffer, IppsRijndael256Spec* pCtx);

Parameters

pCtx	Pointer to the IppsRijndael256Spec context.
pBuffer	Pointer to the user-defined buffer.

Description

This functions are declared in the ippcp.h file. The Rijndael256Pack function transforms the *pCtx context to a position-independent form and stores it in the *pBuffer buffer. The Rijndael256Unpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsRijndael256Spec context. The Rijndael256Pack and Rijndael256Unpack functions enable replacing the position-dependent IppsRijndael256Spec context in the memory.

Call the Rijndael256GetSize function prior to Rijndael256Pack/Rijndael256Unpack 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.