Cryptography for Intel® Integrated Performance Primitives Developer Reference

Developer Reference

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 =
    0x
    C3D2E1F01032547698BADCFEEFCDAB8967452301
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.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.