Created
January 25, 2023 15:09
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Example of using IPP Crypto Primitives for SHA hashing
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#include <iostream> | |
#include <stdint.h> | |
#include <x86intrin.h> | |
#include "ippcp.h" | |
#include "examples_common.h" | |
#define DATA_SIZE 1024*1024 | |
#define DIGEST_SIZE 32 | |
#define ITERATIONS 10000 | |
static inline uint32_t rdtsc(void) | |
{ | |
uint32_t a = 0; | |
asm volatile("rdtsc":"=a"(a)::"edx"); | |
return a; | |
} | |
int main() | |
{ | |
IppStatus status = ippStsNoErr; | |
Ipp8u pDigest[DIGEST_SIZE] = {}; | |
Ipp8u* data = new Ipp8u[DATA_SIZE]; | |
int ctxSize = 0; | |
ippsHashGetSize(&ctxSize); | |
// Allocate memory for the hash context structure | |
IppsHashState* pCtx = (IppsHashState*)(new Ipp8u[ctxSize]); | |
const uint64_t start = __rdtsc(); | |
for(uint32_t i=0; i<ITERATIONS; ++i) { | |
// Initialize Hash context | |
status = ippsHashInit(pCtx, ippHashAlg_SHA256); | |
if(status != ippStsNoErr) | |
std::cout << "Error with ippsHashInit()" << std::endl; | |
// Call HashUpdate to digest the data until completion. | |
status = ippsHashUpdate(data, DATA_SIZE, pCtx); | |
if(status != ippStsNoErr) | |
std::cout << "Error with ippsHashUpdate()" << std::endl; | |
// Call HashFinal to compute the digest value | |
status = ippsHashFinal(pDigest, pCtx); | |
if(status != ippStsNoErr) | |
std::cout << "Error with ippsHashFinal()" << std::endl; | |
} | |
const uint64_t end = __rdtsc(); | |
std::cout << "Elapsed cycles: " << (end - start)/ITERATIONS << std::endl; | |
delete [] (Ipp8u*)pCtx; | |
pCtx = 0; | |
delete [] data; | |
data = 0; | |
return 0; | |
} |
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