SHA512Pack, SHA512Unpack¶
Packs/unpacks the IppsSHA512State context into/from a user-defined buffer.
Syntax¶
IppStatus ippsSHA512Pack (const IppsSHA512State* pCtx, Ipp8u* pBuffer);
IppStatus ippsSHA512Unpack (const Ipp8u* pBuffer, IppsSHA512State* pCtx);
Include Files¶
ippcp.h
Parameters¶
pCtx |
Pointer to the IppsSHA512State context. |
pBuffer |
Pointer to the user-defined buffer. |
Description¶
The SHA512Pack function transforms the *pCtx context to a position-independent form and stores it in the *pBuffer buffer. The SHA512Unpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsSHA512State context. The SHA512Pack and SHA512Unpack functions enable replacing the position-dependent IppsSHA512State context in the memory.
Call the SHA512GetSize function prior to SHA512Pack/SHA512Unpack 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. |
ippStsContextMatchErr |
Indicates an error condition if the context parameter does not match the operation. |