generic-library/openssl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

functionality for BN_mod_sqrt timings

Browse Source
This commit is contained in:
Bodo Möller 2000-12-01 09:41:21 +00:00
parent b5a25a430a
commit 5a12df5c40
1 changed files with 72 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

102
crypto/bn/expspeed.c
View File

@ -60,15 +60,27 @@
/* most of this code has been pilfered from my libdes speed.c program */
#define BASENUM 10000
#define BASENUM 5000
#define NUM_START 0
/* determine timings for modexp, gcd, or modular inverse */
#undef TEST_EXP
#define TEST_EXP
#undef TEST_GCD
#define TEST_KRON
#undef TEST_KRON
#undef TEST_INV
#undef TEST_SQRT
#define P_MOD_64 9 /* least significant 6 bits for prime to be used for BN_sqrt timings */
#if defined(TEST_EXP) + defined(TEST_GCD) + defined(TEST_KRON) + defined(TEST_INV) +defined(TEST_SQRT) != 1
# error "choose one test"
#endif
#if defined(TEST_INV) || defined(TEST_SQRT)
# define C_PRIME
static void genprime_cb(int p, int n, void *arg);
#endif
#undef PROG
@ -182,20 +194,6 @@ static int mul_c[NUM_SIZES]={8*8*8*8*8*8,8*8*8*8*8,8*8*8*8,8*8*8,8*8,8,1};
#define RAND_SEED(string) { const char str[] = string; RAND_seed(string, sizeof str); }
static void genprime_cb(int p, int n, void *arg)
{
char c='*';
if (p == 0) c='.';
if (p == 1) c='+';
if (p == 2) c='*';
if (p == 3) c='\n';
putc(c, stderr);
fflush(stderr);
(void)n;
(void)arg;
}
void do_mul_exp(BIGNUM *r,BIGNUM *a,BIGNUM *b,BIGNUM *c,BN_CTX *ctx);
int main(int argc, char **argv)
@ -203,6 +201,11 @@ int main(int argc, char **argv)
BN_CTX *ctx;
BIGNUM *a,*b,*c,*r;
#if 1
if (!CRYPTO_set_mem_debug_functions(0,0,0,0,0))
abort();
#endif
ctx=BN_CTX_new();
a=BN_new();
b=BN_new();
@ -223,34 +226,48 @@ void do_mul_exp(BIGNUM *r, BIGNUM *a, BIGNUM *b, BIGNUM *c, BN_CTX *ctx)
double tm;
long num;
#if defined(TEST_EXP) + defined(TEST_GCD) + defined(TEST_KRON) + defined(TEST_INV) != 1
# error "choose one test"
#endif
#ifdef TEST_INV
# define C_PRIME
#endif
num=BASENUM;
for (i=NUM_START; i<NUM_SIZES; i++)
{
#ifdef C_PRIME
if (!BN_generate_prime(c,sizes[i],0,NULL,NULL,genprime_cb,NULL)) goto err;
# ifdef TEST_SQRT
if (!BN_set_word(a, 64)) goto err;
if (!BN_set_word(b, P_MOD_64)) goto err;
# define ADD a
# define REM b
# else
# define ADD NULL
# define REM NULL
# endif
if (!BN_generate_prime(c,sizes[i],0,ADD,REM,genprime_cb,NULL)) goto err;
putc('\n', stderr);
fflush(stderr);
#endif
Time_F(START);
for (k=0; k<num; k++)
{
if (k%50 == 0) /* Average over num/50 different choices of random numbers. */
{
if (!BN_pseudo_rand(a,sizes[i],1,0)) goto err;
if (!BN_pseudo_rand(b,sizes[i],1,0)) goto err;
#ifndef C_PRIME
if (!BN_pseudo_rand(c,sizes[i],1,1)) goto err;
#endif
#ifdef TEST_SQRT
if (!BN_mod_sqr(a,a,c,ctx)) goto err;
if (!BN_mod_sqr(b,b,c,ctx)) goto err;
#else
if (!BN_nnmod(a,a,c,ctx)) goto err;
if (!BN_nnmod(b,b,c,ctx)) goto err;
#endif
if (k == 0)
Time_F(START);
}
#if defined(TEST_EXP)
if (!BN_mod_exp(r,a,b,c,ctx)) goto err;
#elif defined(TEST_GCD)
@ -261,9 +278,12 @@ void do_mul_exp(BIGNUM *r, BIGNUM *a, BIGNUM *b, BIGNUM *c, BN_CTX *ctx)
if (-2 == BN_kronecker(a,b,ctx)) goto err;
if (-2 == BN_kronecker(b,c,ctx)) goto err;
if (-2 == BN_kronecker(c,a,ctx)) goto err;
#else /* TEST_INV */
#elif defined(TEST_INV)
if (!BN_mod_inverse(r,a,c,ctx)) goto err;
if (!BN_mod_inverse(r,b,c,ctx)) goto err;
#else /* TEST_SQRT */
if (!BN_mod_sqrt(r,a,c,ctx)) goto err;
if (!BN_mod_sqrt(r,b,c,ctx)) goto err;
#endif
}
tm=Time_F(STOP);
@ -274,10 +294,16 @@ void do_mul_exp(BIGNUM *r, BIGNUM *a, BIGNUM *b, BIGNUM *c, BN_CTX *ctx)
"3*gcd %4d %4d %4d"
#elif defined(TEST_KRON)
"3*kronecker %4d %4d %4d"
#else /* TEST_INV */
#elif defined(TEST_INV)
"2*inv %4d %4d mod %4d"
#else /* TEST_SQRT */
"2*sqrt [prime == %d (mod 64)] %4d %4d mod %4d"
#endif
" -> %8.3fms %5.1f (%ld)\n",sizes[i],sizes[i],sizes[i],tm*1000.0/num,tm*mul_c[i]/num, num);
" -> %8.3fms %5.1f (%ld)\n",
#ifdef TEST_SQRT
P_MOD_64,
#endif
sizes[i],sizes[i],sizes[i],tm*1000.0/num,tm*mul_c[i]/num, num);
num/=7;
if (num <= 0) num=1;
}
@ -287,3 +313,19 @@ void do_mul_exp(BIGNUM *r, BIGNUM *a, BIGNUM *b, BIGNUM *c, BN_CTX *ctx)
ERR_print_errors_fp(stderr);
}
#ifdef C_PRIME
static void genprime_cb(int p, int n, void *arg)
{
char c='*';
if (p == 0) c='.';
if (p == 1) c='+';
if (p == 2) c='*';
if (p == 3) c='\n';
putc(c, stderr);
fflush(stderr);
(void)n;
(void)arg;
}
#endif