Developer Reference

Contents

SHA1Pack, SHA1Unpack

Packs/unpacks the
IppsSHA1State
context into/from a user-defined buffer.

Syntax

IppStatus ippsSHA1Pack (const IppsSHA1State*
pCtx
, Ipp8u*
pBuffer
);
IppStatus ippsSHA1Unpack (const Ipp8u*
pBuffer
, IppsSHA1State*
pCtx
);
Include Files
ippcp.h
Parameters
pCtx
Pointer to the
IppsSHA1State
context.
pBuffer
Pointer to the user-defined buffer.
Description
The
SHA1Pack
function transforms the
*pCtx
context to a position-independent form and stores it in the
*pBuffer
buffer. The
SHA1Unpack
function performs the inverse operation, that is, transforms the contents of the
*pBuffer
buffer into a normal
IppsSHA1State
context. The
SHA1Pack
and
SHA1Unpack
functions enable replacing the position-dependent
IppsSHA1State
context in the memory.
Call the
SHA1GetSize
function prior to
SHA1Pack
/
SHA1Unpack
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

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.