HMACMD5Pack, HMACMD5Unpack

Packs/unpacks the IppsHMACMD5State context into/from a user-defined buffer.

Syntax

IppStatus ippsHMACMD5Pack (const IppsHMACMD5State* pCtx, Ipp8u* pBuffer);

IppStatus ippsHMACMD5Unpack (Ipp8u* pBuffer, const IppsHMACMD5State* pCtx);

Parameters

pCtx

Pointer to the IppsHMACMD5State context.

pBuffer

Pointer to the user-defined buffer.

Description

This functions are declared in the ippcp.h file. The HMACMD5Pack function transforms the *pCtx context to a position-independent form and stores it in the the *pBuffer buffer. The HMACMD5Unpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsHMACMD5State context. The HMACMD5Pack and HMACMD5Unpack functions enable replacing the position-dependent IppsHMACMD5State context in the memory.

Call the HMACMD5GetSize function prior to HMACMD5Pack/HMACMD5Unpack 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.

See Also

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