AESPack, AESUnpack¶
Packs/unpacks the IppsAESSpec context into/from a user-defined buffer.
Syntax¶
IppStatus ippsAESPack (const IppsAESSpec* pCtx, Ipp8u* pBuffer, int bufSize);
IppStatus ippsAESUnpack (const Ipp8u* pBuffer, IppsAESSpec* pCtx, int ctxSize);
Include Files¶
ippcp.h
Parameters¶
pCtx |
Pointer to the IppsAESSpec context. |
pBuffer |
Pointer to the user-defined buffer. |
bufSize |
Available size of the buffer. |
ctxSize |
Available size of the context. |
Description¶
The AESPack function transforms the *pCtx context to a position-independent form and stores it in the *pBuffer buffer. The AESUnpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsAESSpec context. The AESPack and AESUnpack functions enable replacing the position-dependent IppsAESSpec context in the memory.
Call the AESGetSize function prior to AESPack/AESUnpack 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. |
ippStsLengthErr |
Indicates an error condition if bufSize or ctxSize is less than the real size of the IppsAESSpec context. |
ippStsContextMatchErr |
Indicates an error condition if the pCtx parameter does not match the operation. |