Developer Reference

Contents

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.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804