HMACSHA384Pack, HMACSHA384Unpack

Packs/unpacks the IppsHMACSHA384State context into/from a user-defined buffer.

Syntax

IppStatus ippsHMACSHA384Pack (const IppsHMACSHA384State* pCtx, Ipp8u* pBuffer);

IppStatus ippsHMACSHA384Unpack (Ipp8u* pBuffer, const IppsHMACSHA384State* pCtx);

Parameters

pCtx

Pointer to the IppsHMACSHA384State context.

pBuffer

Pointer to the user-defined buffer.

Description

This functions are declared in the ippcp.h file. The HMACSHA384Pack function transforms the *pCtx context to a position-independent form and stores it in the the *pBuffer buffer. The HMACSHA384Unpack function performs the inverse operation, that is, transforms the contents of the *pBuffer buffer into a normal IppsHMACSHA384State context. The HMACSHA384Pack and HMACSHA384Unpack functions enable replacing the position-dependent IppsHMACSHA384State context in the memory.

Call the HMACSHA384GetSize function prior to HMACSHA384Pack/HMACSHA384Unpack 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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