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8eaa98807b
libtommath/demo/demo.c
Tom St Denis 8eaa98807b added libtommath-0.31
2010-07-15 17:25:45 +02:00

514 lines
16 KiB
C
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#include <time.h>
#ifdef IOWNANATHLON
#include <unistd.h>
#define SLEEP sleep(4)
#else
#define SLEEP
#endif
#include "tommath.h"
void ndraw(mp_int *a, char *name)
{
char buf[4096];
printf("%s: ", name);
mp_toradix(a, buf, 64);
printf("%s\n", buf);
}
static void draw(mp_int *a)
{
ndraw(a, "");
}
unsigned long lfsr = 0xAAAAAAAAUL;
int lbit(void)
{
if (lfsr & 0x80000000UL) {
lfsr = ((lfsr << 1) ^ 0x8000001BUL) & 0xFFFFFFFFUL;
return 1;
} else {
lfsr <<= 1;
return 0;
}
}
int myrng(unsigned char *dst, int len, void *dat)
{
int x;
for (x = 0; x < len; x++) dst[x] = rand() & 0xFF;
return len;
}
char cmd[4096], buf[4096];
int main(void)
{
mp_int a, b, c, d, e, f;
unsigned long expt_n, add_n, sub_n, mul_n, div_n, sqr_n, mul2d_n, div2d_n, gcd_n, lcm_n, inv_n,
div2_n, mul2_n, add_d_n, sub_d_n, t;
unsigned rr;
int i, n, err, cnt, ix, old_kara_m, old_kara_s;
mp_init(&a);
mp_init(&b);
mp_init(&c);
mp_init(&d);
mp_init(&e);
mp_init(&f);
srand(time(NULL));
// test mp_get_int
printf("Testing: mp_get_int\n");
for(i=0;i<1000;++i) {
t = ((unsigned long)rand()*rand()+1)&0xFFFFFFFF;
mp_set_int(&a,t);
if (t!=mp_get_int(&a)) {
printf("mp_get_int() bad result!\n");
return 1;
}
}
mp_set_int(&a,0);
if (mp_get_int(&a)!=0)
{ printf("mp_get_int() bad result!\n");
return 1;
}
mp_set_int(&a,0xffffffff);
if (mp_get_int(&a)!=0xffffffff)
{ printf("mp_get_int() bad result!\n");
return 1;
}
// test mp_sqrt
printf("Testing: mp_sqrt\n");
for (i=0;i<1000;++i) {
printf("%6d\r", i); fflush(stdout);
n = (rand()&15)+1;
mp_rand(&a,n);
if (mp_sqrt(&a,&b) != MP_OKAY)
{ printf("mp_sqrt() error!\n");
return 1;
}
mp_n_root(&a,2,&a);
if (mp_cmp_mag(&b,&a) != MP_EQ)
{ printf("mp_sqrt() bad result!\n");
return 1;
}
}
printf("\nTesting: mp_is_square\n");
for (i=0;i<1000;++i) {
printf("%6d\r", i); fflush(stdout);
/* test mp_is_square false negatives */
n = (rand()&7)+1;
mp_rand(&a,n);
mp_sqr(&a,&a);
if (mp_is_square(&a,&n)!=MP_OKAY) {
printf("fn:mp_is_square() error!\n");
return 1;
}
if (n==0) {
printf("fn:mp_is_square() bad result!\n");
return 1;
}
/* test for false positives */
mp_add_d(&a, 1, &a);
if (mp_is_square(&a,&n)!=MP_OKAY) {
printf("fp:mp_is_square() error!\n");
return 1;
}
if (n==1) {
printf("fp:mp_is_square() bad result!\n");
return 1;
}
}
printf("\n\n");
/* test for size */
for (ix = 10; ix < 256; ix++) {
printf("Testing (not safe-prime): %9d bits \r", ix); fflush(stdout);
err = mp_prime_random_ex(&a, 8, ix, (rand()&1)?LTM_PRIME_2MSB_OFF:LTM_PRIME_2MSB_ON, myrng, NULL);
if (err != MP_OKAY) {
printf("failed with err code %d\n", err);
return EXIT_FAILURE;
}
if (mp_count_bits(&a) != ix) {
printf("Prime is %d not %d bits!!!\n", mp_count_bits(&a), ix);
return EXIT_FAILURE;
}
}
for (ix = 16; ix < 256; ix++) {
printf("Testing ( safe-prime): %9d bits \r", ix); fflush(stdout);
err = mp_prime_random_ex(&a, 8, ix, ((rand()&1)?LTM_PRIME_2MSB_OFF:LTM_PRIME_2MSB_ON)|LTM_PRIME_SAFE, myrng, NULL);
if (err != MP_OKAY) {
printf("failed with err code %d\n", err);
return EXIT_FAILURE;
}
if (mp_count_bits(&a) != ix) {
printf("Prime is %d not %d bits!!!\n", mp_count_bits(&a), ix);
return EXIT_FAILURE;
}
/* let's see if it's really a safe prime */
mp_sub_d(&a, 1, &a);
mp_div_2(&a, &a);
mp_prime_is_prime(&a, 8, &cnt);
if (cnt != MP_YES) {
printf("sub is not prime!\n");
return EXIT_FAILURE;
}
}
printf("\n\n");
mp_read_radix(&a, "123456", 10);
mp_toradix_n(&a, buf, 10, 3);
printf("a == %s\n", buf);
mp_toradix_n(&a, buf, 10, 4);
printf("a == %s\n", buf);
mp_toradix_n(&a, buf, 10, 30);
printf("a == %s\n", buf);
#if 0
for (;;) {
fgets(buf, sizeof(buf), stdin);
mp_read_radix(&a, buf, 10);
mp_prime_next_prime(&a, 5, 1);
mp_toradix(&a, buf, 10);
printf("%s, %lu\n", buf, a.dp[0] & 3);
}
#endif
/* test mp_cnt_lsb */
printf("testing mp_cnt_lsb...\n");
mp_set(&a, 1);
for (ix = 0; ix < 1024; ix++) {
if (mp_cnt_lsb(&a) != ix) {
printf("Failed at %d, %d\n", ix, mp_cnt_lsb(&a));
return 0;
}
mp_mul_2(&a, &a);
}
/* test mp_reduce_2k */
printf("Testing mp_reduce_2k...\n");
for (cnt = 3; cnt <= 128; ++cnt) {
mp_digit tmp;
mp_2expt(&a, cnt);
mp_sub_d(&a, 2, &a); /* a = 2**cnt - 2 */
printf("\nTesting %4d bits", cnt);
printf("(%d)", mp_reduce_is_2k(&a));
mp_reduce_2k_setup(&a, &tmp);
printf("(%d)", tmp);
for (ix = 0; ix < 1000; ix++) {
if (!(ix & 127)) {printf("."); fflush(stdout); }
mp_rand(&b, (cnt/DIGIT_BIT + 1) * 2);
mp_copy(&c, &b);
mp_mod(&c, &a, &c);
mp_reduce_2k(&b, &a, 1);
if (mp_cmp(&c, &b)) {
printf("FAILED\n");
exit(0);
}
}
}
/* test mp_div_3 */
printf("Testing mp_div_3...\n");
mp_set(&d, 3);
for (cnt = 0; cnt < 10000; ) {
mp_digit r1, r2;
if (!(++cnt & 127)) printf("%9d\r", cnt);
mp_rand(&a, abs(rand()) % 128 + 1);
mp_div(&a, &d, &b, &e);
mp_div_3(&a, &c, &r2);
if (mp_cmp(&b, &c) || mp_cmp_d(&e, r2)) {
printf("\n\nmp_div_3 => Failure\n");
}
}
printf("\n\nPassed div_3 testing\n");
/* test the DR reduction */
printf("testing mp_dr_reduce...\n");
for (cnt = 2; cnt < 32; cnt++) {
printf("%d digit modulus\n", cnt);
mp_grow(&a, cnt);
mp_zero(&a);
for (ix = 1; ix < cnt; ix++) {
a.dp[ix] = MP_MASK;
}
a.used = cnt;
a.dp[0] = 3;
mp_rand(&b, cnt - 1);
mp_copy(&b, &c);
rr = 0;
do {
if (!(rr & 127)) { printf("%9lu\r", rr); fflush(stdout); }
mp_sqr(&b, &b); mp_add_d(&b, 1, &b);
mp_copy(&b, &c);
mp_mod(&b, &a, &b);
mp_dr_reduce(&c, &a, (((mp_digit)1)<<DIGIT_BIT)-a.dp[0]);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("Failed on trial %lu\n", rr); exit(-1);
}
} while (++rr < 500);
printf("Passed DR test for %d digits\n", cnt);
}
div2_n = mul2_n = inv_n = expt_n = lcm_n = gcd_n = add_n =
sub_n = mul_n = div_n = sqr_n = mul2d_n = div2d_n = cnt = add_d_n = sub_d_n= 0;
/* force KARA and TOOM to enable despite cutoffs */
KARATSUBA_SQR_CUTOFF = KARATSUBA_MUL_CUTOFF = 110;
TOOM_SQR_CUTOFF = TOOM_MUL_CUTOFF = 150;
for (;;) {
/* randomly clear and re-init one variable, this has the affect of triming the alloc space */
switch (abs(rand()) % 7) {
case 0: mp_clear(&a); mp_init(&a); break;
case 1: mp_clear(&b); mp_init(&b); break;
case 2: mp_clear(&c); mp_init(&c); break;
case 3: mp_clear(&d); mp_init(&d); break;
case 4: mp_clear(&e); mp_init(&e); break;
case 5: mp_clear(&f); mp_init(&f); break;
case 6: break; /* don't clear any */
}
printf("%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu ", add_n, sub_n, mul_n, div_n, sqr_n, mul2d_n, div2d_n, gcd_n, lcm_n, expt_n, inv_n, div2_n, mul2_n, add_d_n, sub_d_n);
fgets(cmd, 4095, stdin);
cmd[strlen(cmd)-1] = 0;
printf("%s ]\r",cmd); fflush(stdout);
if (!strcmp(cmd, "mul2d")) { ++mul2d_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); sscanf(buf, "%d", &rr);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
mp_mul_2d(&a, rr, &a);
a.sign = b.sign;
if (mp_cmp(&a, &b) != MP_EQ) {
printf("mul2d failed, rr == %d\n",rr);
draw(&a);
draw(&b);
return 0;
}
} else if (!strcmp(cmd, "div2d")) { ++div2d_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); sscanf(buf, "%d", &rr);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
mp_div_2d(&a, rr, &a, &e);
a.sign = b.sign;
if (a.used == b.used && a.used == 0) { a.sign = b.sign = MP_ZPOS; }
if (mp_cmp(&a, &b) != MP_EQ) {
printf("div2d failed, rr == %d\n",rr);
draw(&a);
draw(&b);
return 0;
}
} else if (!strcmp(cmd, "add")) { ++add_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_add(&d, &b, &d);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("add %lu failure!\n", add_n);
draw(&a);draw(&b);draw(&c);draw(&d);
return 0;
}
/* test the sign/unsigned storage functions */
rr = mp_signed_bin_size(&c);
mp_to_signed_bin(&c, (unsigned char *)cmd);
memset(cmd+rr, rand()&255, sizeof(cmd)-rr);
mp_read_signed_bin(&d, (unsigned char *)cmd, rr);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("mp_signed_bin failure!\n");
draw(&c);
draw(&d);
return 0;
}
rr = mp_unsigned_bin_size(&c);
mp_to_unsigned_bin(&c, (unsigned char *)cmd);
memset(cmd+rr, rand()&255, sizeof(cmd)-rr);
mp_read_unsigned_bin(&d, (unsigned char *)cmd, rr);
if (mp_cmp_mag(&c, &d) != MP_EQ) {
printf("mp_unsigned_bin failure!\n");
draw(&c);
draw(&d);
return 0;
}
} else if (!strcmp(cmd, "sub")) { ++sub_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_sub(&d, &b, &d);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("sub %lu failure!\n", sub_n);
draw(&a);draw(&b);draw(&c);draw(&d);
return 0;
}
} else if (!strcmp(cmd, "mul")) { ++mul_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_mul(&d, &b, &d);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("mul %lu failure!\n", mul_n);
draw(&a);draw(&b);draw(&c);draw(&d);
return 0;
}
} else if (!strcmp(cmd, "div")) { ++div_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&d, buf, 64);
mp_div(&a, &b, &e, &f);
if (mp_cmp(&c, &e) != MP_EQ || mp_cmp(&d, &f) != MP_EQ) {
printf("div %lu failure!\n", div_n);
draw(&a);draw(&b);draw(&c);draw(&d); draw(&e); draw(&f);
return 0;
}
} else if (!strcmp(cmd, "sqr")) { ++sqr_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
mp_copy(&a, &c);
mp_sqr(&c, &c);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("sqr %lu failure!\n", sqr_n);
draw(&a);draw(&b);draw(&c);
return 0;
}
} else if (!strcmp(cmd, "gcd")) { ++gcd_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_gcd(&d, &b, &d);
d.sign = c.sign;
if (mp_cmp(&c, &d) != MP_EQ) {
printf("gcd %lu failure!\n", gcd_n);
draw(&a);draw(&b);draw(&c);draw(&d);
return 0;
}
} else if (!strcmp(cmd, "lcm")) { ++lcm_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_lcm(&d, &b, &d);
d.sign = c.sign;
if (mp_cmp(&c, &d) != MP_EQ) {
printf("lcm %lu failure!\n", lcm_n);
draw(&a);draw(&b);draw(&c);draw(&d);
return 0;
}
} else if (!strcmp(cmd, "expt")) { ++expt_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&d, buf, 64);
mp_copy(&a, &e);
mp_exptmod(&e, &b, &c, &e);
if (mp_cmp(&d, &e) != MP_EQ) {
printf("expt %lu failure!\n", expt_n);
draw(&a);draw(&b);draw(&c);draw(&d); draw(&e);
return 0;
}
} else if (!strcmp(cmd, "invmod")) { ++inv_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&c, buf, 64);
mp_invmod(&a, &b, &d);
mp_mulmod(&d,&a,&b,&e);
if (mp_cmp_d(&e, 1) != MP_EQ) {
printf("inv [wrong value from MPI?!] failure\n");
draw(&a);draw(&b);draw(&c);draw(&d);
mp_gcd(&a, &b, &e);
draw(&e);
return 0;
}
} else if (!strcmp(cmd, "div2")) { ++div2_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
mp_div_2(&a, &c);
if (mp_cmp(&c, &b) != MP_EQ) {
printf("div_2 %lu failure\n", div2_n);
draw(&a);
draw(&b);
draw(&c);
return 0;
}
} else if (!strcmp(cmd, "mul2")) { ++mul2_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
mp_mul_2(&a, &c);
if (mp_cmp(&c, &b) != MP_EQ) {
printf("mul_2 %lu failure\n", mul2_n);
draw(&a);
draw(&b);
draw(&c);
return 0;
}
} else if (!strcmp(cmd, "add_d")) { ++add_d_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); sscanf(buf, "%d", &ix);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
mp_add_d(&a, ix, &c);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("add_d %lu failure\n", add_d_n);
draw(&a);
draw(&b);
draw(&c);
printf("d == %d\n", ix);
return 0;
}
} else if (!strcmp(cmd, "sub_d")) { ++sub_d_n;
fgets(buf, 4095, stdin); mp_read_radix(&a, buf, 64);
fgets(buf, 4095, stdin); sscanf(buf, "%d", &ix);
fgets(buf, 4095, stdin); mp_read_radix(&b, buf, 64);
mp_sub_d(&a, ix, &c);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("sub_d %lu failure\n", sub_d_n);
draw(&a);
draw(&b);
draw(&c);
printf("d == %d\n", ix);
return 0;
}
}
}
return 0;
}
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