Developer Reference

Contents

HashInit

Initializes user-supplied memory as
IppsHashState
or
IppsHashState_rmf
context for future use.

Syntax

IppStatus ippsHashInit(IppsHashState*
pCtx
,
IppHashAlgId
hashAlg
);
IppStatus ippsHashInit_rmf(IppsHashState_rmf*
pCtx
,
IppsHashMethod*
pMethod
);
Include Files
ippcp.h
Parameters
pCtx
Pointer to the
IppsHashState
or
IppsHashState_rmf
context being intialized.
hashAlg
Identifier of the hash algorithm.
pMethod
Pointer to the hash method.
Description
The function initializes the memory pointed by
pCtx
as
IppsHashState
or
IppsHashState_rmf
context. The
hashAlg
and
pMethod
parameters define the hash algorithm to be used in subsequent calls to
HashUpdate
,
HashFinal
, or
HashGetTag
functions. The
hashAlg
parameter
can take one of the values listed in table Supported Hash Algorithms.
To get a value for the
pMethod
parameter, call one of the HashMethod functions.
This function has a
reduced memory footprint
version. To learn more, see Reduced Memory Footprint Functions.
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
.
ippStsNotSupportedModeErr
Indicates an error condition if the
hashAlg
parameter does not match any
value of
IppHashAlg
listed in table Supported Hash Algorithms
.

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