MD5Pack, MD5Unpack¶
Packs/unpacks the IppsMD5State context into/from a user-defined buffer (deprecated).
Syntax¶
IppStatus ippsMD5Pack (const IppsMD5State* pCtx, Ipp8u* pBuffer);
IppStatus ippsMD5Unpack (const Ipp8u* pBuffer, IppsMD5State* pCtx);
Include Files¶
ippcp.h
Parameters¶
pCtx |
Pointer to the IppsMD5State context. |
pBuffer |
Pointer to the user-defined buffer. |
Description¶
Note
This algorithm is considered weak due to known attacks on it. The functionality remains in the library, but the implementation will no longer be optimized and no security patches will be applied.
The MD5Pack function transforms the *pCtx context to a position-independent form and stores it in the *pBuffer buffer. The MD5Unpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsMD5State context. The MD5Pack and MD5Unpack functions enable replacing the position-dependent IppsMD5State context in the memory.
Call the MD5GetSize function prior to MD5Pack/MD5Unpack 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. |