PRNGInit

Initializes user-supplied memory as IppsPRNGState context for future use.

Syntax

IppStatus ippsPRNGInit(int seedBits, IppsPRNGState* pCtx);

Parameters

seedBits	Size in bits for the seed value.
pCtx	Pointer to the IppsPRNGState context being intialized.

Description

This function is declared in the ippcp.h file. The function initializes the memory pointed by pCtx as the IppsPRNGState context. In addition, the function sets up the default internal random generator parameters (seed, entropy augment, modulus, and initial hash value H0 of the SHA-1 algorithm). PRNG default parameters are as follows:

seed =0x0
entropy augment =0x0
modulus =0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
H0 =0xC3D2E1F01032547698BADCFEEFCDAB8967452301

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 seedBits is less than 1 or greater than 512.