Developer Reference for Intel® Integrated Performance Primitives Cryptography 2019
Generates a pseudorandom unsigned Big Number of the specified bit length using the RDSEED instruction.
IppStatus ippsTRNGenRDSEED(Ipp32u* pRand, int nBits, void* pCtx);
ippcp.h
pRand |
Pointer to the output pseudorandom unsigned integer big number. |
nBits |
The number of generated pseudorandom bits. |
pCtx |
Pointer to the IppsPRNGState context. This pointer is unused and can be NULL. |
The function generates a pseudorandom unsigned integer big number of the specified nBits length. The generation is based on the RDSEED instruction available on latest Intel® processors [INTEL_ARCH].
Optimization Notice |
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Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. Notice revision #20110804 |
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 RDSEED instruction is not available on the target processor. |