Mercurial > dropbear
view libtommath/demo/demo.c @ 495:cd02449b709c
Don't send anything in response to a SSH_MSG_CHANNEL_REQUEST if we have
already sent a SSH_MSG_CHANNEL_CLOSE. This fixes a bug triggered by more
recent versions of putty with tcp fowarding and window adjustment request
messages.
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Tue, 23 Sep 2008 12:03:01 +0000 |
parents | 5ff8218bcee9 |
children | 60fc6476e044 |
line wrap: on
line source
#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[16000]; printf("%s: ", name); mp_toradix(a, buf, 10); 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_digit mp; mp_init(&a); mp_init(&b); mp_init(&c); mp_init(&d); mp_init(&e); mp_init(&f); srand(time(NULL)); #if 0 // test montgomery printf("Testing montgomery...\n"); for (i = 1; i < 10; i++) { printf("Testing digit size: %d\n", i); for (n = 0; n < 1000; n++) { mp_rand(&a, i); a.dp[0] |= 1; // let's see if R is right mp_montgomery_calc_normalization(&b, &a); mp_montgomery_setup(&a, &mp); // now test a random reduction for (ix = 0; ix < 100; ix++) { mp_rand(&c, 1 + abs(rand()) % (2*i)); mp_copy(&c, &d); mp_copy(&c, &e); mp_mod(&d, &a, &d); mp_montgomery_reduce(&c, &a, mp); mp_mulmod(&c, &b, &a, &c); if (mp_cmp(&c, &d) != MP_EQ) { printf("d = e mod a, c = e MOD a\n"); mp_todecimal(&a, buf); printf("a = %s\n", buf); mp_todecimal(&e, buf); printf("e = %s\n", buf); mp_todecimal(&d, buf); printf("d = %s\n", buf); mp_todecimal(&c, buf); printf("c = %s\n", buf); printf("compare no compare!\n"); exit(EXIT_FAILURE); } } } } printf("done\n"); // 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 < 128; 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 < 128; 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, 2); 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); } #endif /* test the mp_reduce_2k_l code */ #if 0 #if 0 /* first load P with 2^1024 - 0x2A434 B9FDEC95 D8F9D550 FFFFFFFF FFFFFFFF */ mp_2expt(&a, 1024); mp_read_radix(&b, "2A434B9FDEC95D8F9D550FFFFFFFFFFFFFFFF", 16); mp_sub(&a, &b, &a); #elif 1 /* p = 2^2048 - 0x1 00000000 00000000 00000000 00000000 4945DDBF 8EA2A91D 5776399B B83E188F */ mp_2expt(&a, 2048); mp_read_radix(&b, "1000000000000000000000000000000004945DDBF8EA2A91D5776399BB83E188F", 16); mp_sub(&a, &b, &a); #endif mp_todecimal(&a, buf); printf("p==%s\n", buf); /* now mp_reduce_is_2k_l() should return */ if (mp_reduce_is_2k_l(&a) != 1) { printf("mp_reduce_is_2k_l() return 0, should be 1\n"); return EXIT_FAILURE; } mp_reduce_2k_setup_l(&a, &d); /* now do a million square+1 to see if it varies */ mp_rand(&b, 64); mp_mod(&b, &a, &b); mp_copy(&b, &c); printf("testing mp_reduce_2k_l..."); fflush(stdout); for (cnt = 0; cnt < (1UL << 20); cnt++) { mp_sqr(&b, &b); mp_add_d(&b, 1, &b); mp_reduce_2k_l(&b, &a, &d); mp_sqr(&c, &c); mp_add_d(&c, 1, &c); mp_mod(&c, &a, &c); if (mp_cmp(&b, &c) != MP_EQ) { printf("mp_reduce_2k_l() failed at step %lu\n", cnt); mp_tohex(&b, buf); printf("b == %s\n", buf); mp_tohex(&c, buf); printf("c == %s\n", buf); return EXIT_FAILURE; } } printf("...Passed\n"); #endif 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 = 8; TOOM_SQR_CUTOFF = TOOM_MUL_CUTOFF = 16; 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 %d, %d, failure!\n", div_n, mp_cmp(&c, &e), mp_cmp(&d, &f)); 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; } /* $Source: /cvs/libtom/libtommath/demo/demo.c,v $ */ /* $Revision: 1.3 $ */ /* $Date: 2005/06/24 11:32:07 $ */