Developer Reference

Contents

MGF1_rmf, MGF2_rmf

Generates a pseudorandom mask of the specified length using a selected hash lagorithm based on MGF1 or MGF2 specifications.

Syntax

IppStatus ippsMGF1_rmf(const Ipp8u*
pSeed
, int
seedLen
, Ipp8u*
pMask
, int
maskLen
, const IppsHashMethod*
pMethod
);
IppStatus ippsMGF2_rmf(const Ipp8u*
pSeed
, int
seedLen
, Ipp8u*
pMask
, int
maskLen
, const IppsHashMethod*
pMethod
);
Include Files
ippcp.h
Parameters
pSeed
Pointer to the input octet string.
seedLen
Length of the input string in bytes.
pMask
Pointer to the output pseodorandom mask.
maskLen
Desired length of the output.
pMethod
Pointer to the hash method.
Description
The function generates a pseudorandom mask of the specified length using the hash algorithm defined by
pMethod
, as defined in the MGF1 and MGF2 specifications. To get a value for the
pMethod
parameter, call one of the HashMethod functions.
These are
reduced memory footprint
functions. 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
ippStsLengthErr
Indicates an error condition if any of the specified lengths is negative or zero.

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