md4s.cpp revision 68651 
1//
2// gettsc.inl
3//
4// gives access to the Pentium's (secret) cycle counter
5//
6// This software was written by Leonard Janke (janke@unixg.ubc.ca)
7// in 1996-7 and is entered, by him, into the public domain.
8
9#if defined(__WATCOMC__)
10void GetTSC(unsigned long&);
11#pragma aux GetTSC = 0x0f 0x31 "mov [edi], eax" parm [edi] modify [edx eax];
12#elif defined(__GNUC__)
13inline
14void GetTSC(unsigned long& tsc)
15{
16  asm volatile(".byte 15, 49\n\t"
17	       : "=eax" (tsc)
18	       :
19	       : "%edx", "%eax");
20}
21#elif defined(_MSC_VER)
22inline
23void GetTSC(unsigned long& tsc)
24{
25  unsigned long a;
26  __asm _emit 0fh
27  __asm _emit 31h
28  __asm mov a, eax;
29  tsc=a;
30}
31#endif
32
33#include <stdio.h>
34#include <stdlib.h>
35#include <openssl/md4.h>
36
37extern "C" {
38void md4_block_x86(MD4_CTX *ctx, unsigned char *buffer,int num);
39}
40
41void main(int argc,char *argv[])
42	{
43	unsigned char buffer[64*256];
44	MD4_CTX ctx;
45	unsigned long s1,s2,e1,e2;
46	unsigned char k[16];
47	unsigned long data[2];
48	unsigned char iv[8];
49	int i,num=0,numm;
50	int j=0;
51
52	if (argc >= 2)
53		num=atoi(argv[1]);
54
55	if (num == 0) num=16;
56	if (num > 250) num=16;
57	numm=num+2;
58	num*=64;
59	numm*=64;
60
61	for (j=0; j<6; j++)
62		{
63		for (i=0; i<10; i++) /**/
64			{
65			md4_block_x86(&ctx,buffer,numm);
66			GetTSC(s1);
67			md4_block_x86(&ctx,buffer,numm);
68			GetTSC(e1);
69			GetTSC(s2);
70			md4_block_x86(&ctx,buffer,num);
71			GetTSC(e2);
72			md4_block_x86(&ctx,buffer,num);
73			}
74		printf("md4 (%d bytes) %d %d (%.2f)\n",num,
75			e1-s1,e2-s2,(double)((e1-s1)-(e2-s2))/2);
76		}
77	}
78
79