MGF

Developer Reference for Intel® Integrated Performance Primitives Cryptography

Generates a pseudorandom mask of the specified length using a selected hash algorithm.

Syntax

IppStatus ippsMGF(const Ipp8u *pSeed, int seedLen, Ipp8u* pMask, int maskLen, IppHashAlgId hashAlg);

Include Files

ippcp.h

Parameters

pSeed	Pointer to the input octet string.
seedLen	Length of the input string.
pMask	Pointer to the output pseodorandom mask.
maskLen	Desired length of the output.
hashAlg	Identifier of the hash algorithm.

Description

The function generates a pseudorandom mask of the specified length using the hash algorithm defined by algID. The hashAlg parameter can take one of the values listed in table Supported Hash Algorithms.

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or warning.
ippStsNullPtrErr	Indicates an error condition if pMask pointer is NULL.
ippStsLengthErr	Indicates an error condition if any of the specified lengths is negative or zero.
ippStsNotSupportedModeErr	Indicates an error condition if the hashAlg parameter does not match any value of IppHashAlg listed in table Supported Hash Algorithms.