Visible to Intel only — GUID: GUID-0020DE35-C42C-468E-A485-BC5DF054D5CF
Visible to Intel only — GUID: GUID-0020DE35-C42C-468E-A485-BC5DF054D5CF
TRNGenRDSEED
Generates a true random unsigned 32-bit int buffer of the specified bit length using the RDSEED instruction. If the last 32-bit int is not filled, its most significant bits are zeroed.
Syntax
IppStatus ippsTRNGenRDSEED(Ipp32u* pRand, int nBits, void* pCtx);
Include Files
ippcp.h
Parameters
pRand |
Pointer to the output true random unsigned integer big number. |
nBits |
The number of generated true random bits. |
pCtx |
Pointer to the IppsPRNGState context. This pointer is unused and can be NULL. |
Description
The function generates a true random unsigned integer big number of the specified nBits length. The generation is based on the RDSEED instruction available on latest Intel® processors INTEL_ARCH.
Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at https://edc.intel.com/content/www/us/en/products/performance/benchmarks/overview/. Notice revision #20201201Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or warning. |
ippStsNullPtrErr |
Indicates an error condition if pRand is NULL. |
ippStsErr |
Indicates an error condition if the random bit sequence can’t be generated. |
ippStsLengthErr |
Indicates an error condition if nBits is less than 1. |
ippStsNotSupportedModeErr |
Indicates an error condition if the RDSEED instruction is not available on the target processor. |