Cryptography for Intel® Integrated Performance Primitives Developer Reference

Developer Reference

Contents

PRNGenRDRAND_BN

Generates a pseudorandom positive Big Number of the specified bit length using the RDRAND instruction.

Syntax

IppStatus ippsPRNGenRDRAND_BN(IppsBigNumState*
pRand
, int
nBits
, void*
pCtx
);
Include Files
ippcp.h
Parameters
pRand
Pointer to the output pseudorandom Big Number.
nBits
The number of generated pseudorandom bits.
pCtx
Pointer to the
IppsPRNGState
 context. This pointer is unused and can be
NULL
.
Description
The function generates a pseudorandom positive Big Number of the specified
nBits
 length. The generation is based on the RDRAND instruction available on latest Intel® processors [INTEL_ARCH].
Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.
Notice revision #20201201
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
.
ippStsContextMatchErr
Indicates an error condition if the context parameter does not match the operation.
ippStsLengthErr
Indicates an error condition if
nBits
 is less than 1.
ippStsNotSupportedModeErr
Indicates an error condition if the RDRAND instruction is not available on the target processor.

Product and Performance Information

1

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