Cryptography for Intel(R) Integrated Performance Primitives Developer Reference

ID 768738
Date 12/16/2022
Public
Document Table of Contents

PRNGInit

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

Syntax

IppStatus ippsPRNGInit(int seedBits, IppsPRNGState* pCtx);

Include Files

ippcp.h

Parameters

seedBits

Size in bits for the seed value.

pCtx

Pointer to the IppsPRNGState context being intialized.
Description

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.

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