Developer Reference for Intel® Integrated Performance Primitives Cryptography 2018
Packs/unpacks the IppsDESSpec context into/from a user-defined buffer.
IppStatus ippsDESPack (const IppsDESSpec* pCtx, Ipp8u* pBuffer);
IppStatus ippsDESUnpack (const Ipp8u* pBuffer, IppsDESSpec* pCtx);
ippcp.h
pCtx |
Pointer to the IppsDESSpec context. |
pBuffer |
Pointer to the user-defined buffer. |
The DESPack function transforms the *pCtx context to a position-independent form and stores it in the *pBuffer buffer. The DESUnpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsDESSpec context. The DESPack and DESUnpack functions enable replacing the position-dependent IppsDESSpec context in the memory.
Call the DESGetSize function prior to DESPack/DESUnpack to determine the size of the buffer.
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. |