-/*
- * Measure performance of SHA using raw CommonCrypto digests.
- * Use hashTime to measure performance thru the CSP.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <strings.h>
-#include <CommonCrypto/CommonDigest.h>
-#include "cputime.h"
-#include "common.h"
-
-static void usage(char **argv)
-{
- printf("Usage: %s bytecount [q(uiet)]\n", argv[0]);
- exit(1);
-}
-
-#define BUFSIZE (8 * 1024)
-
-int main(int argc, char **argv)
-{
- bool quiet = false;
- unsigned byteCount;
-
- if(argc < 2) {
- usage(argv);
- }
- byteCount = atoi(argv[1]);
- for(int arg=2; arg<argc; arg++) {
- switch(argv[arg][0]) {
- case 'q':
- quiet = true;
- break;
- default:
- usage(argv);
- }
- }
-
- unsigned char *text = (unsigned char *)malloc(BUFSIZE);
- appGetRandomBytes(text, BUFSIZE);
-
- unsigned toMove = byteCount;
- unsigned thisMove;
- CPUTime startTime;
- double timeSpentMs;
-
- if(!quiet) {
- printf("...testing SHA1\n");
- }
-
- CC_SHA1_CTX ctx1;
- unsigned char dig1[CC_SHA1_DIGEST_LENGTH];
-
- CC_SHA1_Init(&ctx1);
-
- /* start critical timing loop */
- startTime = CPUTimeRead();
- do {
- if(toMove > BUFSIZE) {
- thisMove = BUFSIZE;
- }
- else {
- thisMove = toMove;
- }
- toMove -= thisMove;
- CC_SHA1_Update(&ctx1, text, thisMove);
- } while(toMove);
- CC_SHA1_Final(dig1, &ctx1);
- timeSpentMs = CPUTimeDeltaMs(startTime, CPUTimeRead());
- printf("SHA1: Digest %u bytes : %.2f ms\n", byteCount, timeSpentMs);
-
- /* SHA256 */
- if(!quiet) {
- printf("...testing SHA256\n");
- }
-
- CC_SHA256_CTX ctx256;
- unsigned char dig256[CC_SHA256_DIGEST_LENGTH];
- toMove = byteCount;
- CC_SHA256_Init(&ctx256);
-
- /* start critical timing loop */
- startTime = CPUTimeRead();
- do {
- if(toMove > BUFSIZE) {
- thisMove = BUFSIZE;
- }
- else {
- thisMove = toMove;
- }
- toMove -= thisMove;
- CC_SHA256_Update(&ctx256, text, thisMove);
- } while(toMove);
- CC_SHA256_Final(dig256, &ctx256);
- timeSpentMs = CPUTimeDeltaMs(startTime, CPUTimeRead());
- printf("SHA256: Digest %u bytes : %.2f ms\n", byteCount, timeSpentMs);
-
- /* SHA256 */
- if(!quiet) {
- printf("...testing SHA512\n");
- }
-
- CC_SHA512_CTX ctx512;
- unsigned char dig512[CC_SHA512_DIGEST_LENGTH];
- toMove = byteCount;
- CC_SHA512_Init(&ctx512);
-
- /* start critical timing loop */
- startTime = CPUTimeRead();
- do {
- if(toMove > BUFSIZE) {
- thisMove = BUFSIZE;
- }
- else {
- thisMove = toMove;
- }
- toMove -= thisMove;
- CC_SHA512_Update(&ctx512, text, thisMove);
- } while(toMove);
- CC_SHA512_Final(dig512, &ctx512);
- timeSpentMs = CPUTimeDeltaMs(startTime, CPUTimeRead());
- printf("SHA512: Digest %u bytes : %.2f ms\n", byteCount, timeSpentMs);
-
- return 0;
-}