1 /* crypto/bn/bntest.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
61 * Portions of the attached software ("Contribution") are developed by
62 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
64 * The Contribution is licensed pursuant to the Eric Young open source
65 * license provided above.
67 * The binary polynomial arithmetic software is originally written by
68 * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
78 #include <openssl/bio.h>
79 #include <openssl/bn.h>
80 #include <openssl/rand.h>
81 #include <openssl/x509.h>
82 #include <openssl/err.h>
84 #include "../crypto/bn/bn_lcl.h"
86 const int num0 = 100; /* number of tests */
87 const int num1 = 50; /* additional tests for some functions */
88 const int num2 = 5; /* number of tests for slow functions */
90 int test_add(BIO *bp);
91 int test_sub(BIO *bp);
92 int test_lshift1(BIO *bp);
93 int test_lshift(BIO *bp,BN_CTX *ctx,BIGNUM *a_);
94 int test_rshift1(BIO *bp);
95 int test_rshift(BIO *bp,BN_CTX *ctx);
96 int test_div(BIO *bp,BN_CTX *ctx);
97 int test_div_word(BIO *bp);
98 int test_div_recp(BIO *bp,BN_CTX *ctx);
99 int test_mul(BIO *bp);
100 int test_sqr(BIO *bp,BN_CTX *ctx);
101 int test_mont(BIO *bp,BN_CTX *ctx);
102 int test_mod(BIO *bp,BN_CTX *ctx);
103 int test_mod_mul(BIO *bp,BN_CTX *ctx);
104 int test_mod_exp(BIO *bp,BN_CTX *ctx);
105 int test_mod_exp_mont_consttime(BIO *bp,BN_CTX *ctx);
106 int test_mod_exp_mont5(BIO *bp, BN_CTX *ctx);
107 int test_exp(BIO *bp,BN_CTX *ctx);
108 int test_gf2m_add(BIO *bp);
109 int test_gf2m_mod(BIO *bp);
110 int test_gf2m_mod_mul(BIO *bp,BN_CTX *ctx);
111 int test_gf2m_mod_sqr(BIO *bp,BN_CTX *ctx);
112 int test_gf2m_mod_inv(BIO *bp,BN_CTX *ctx);
113 int test_gf2m_mod_div(BIO *bp,BN_CTX *ctx);
114 int test_gf2m_mod_exp(BIO *bp,BN_CTX *ctx);
115 int test_gf2m_mod_sqrt(BIO *bp,BN_CTX *ctx);
116 int test_gf2m_mod_solve_quad(BIO *bp,BN_CTX *ctx);
117 int test_kron(BIO *bp,BN_CTX *ctx);
118 int test_sqrt(BIO *bp,BN_CTX *ctx);
119 int test_small_prime(BIO *bp,BN_CTX *ctx);
120 int test_probable_prime_coprime(BIO *bp,BN_CTX *ctx);
122 static int results=0;
124 static unsigned char lst[]="\xC6\x4F\x43\x04\x2A\xEA\xCA\x6E\x58\x36\x80\x5B\xE8\xC9"
125 "\x9B\x04\x5D\x48\x36\xC2\xFD\x16\xC9\x64\xF0";
127 static const char rnd_seed[] = "string to make the random number generator think it has entropy";
129 static void message(BIO *out, char *m)
131 fprintf(stderr, "test %s\n", m);
132 BIO_puts(out, "print \"test ");
134 BIO_puts(out, "\\n\"\n");
137 int main(int argc, char *argv[])
145 RAND_seed(rnd_seed, sizeof rnd_seed); /* or BN_generate_prime may fail */
151 if (strcmp(*argv,"-results") == 0)
153 else if (strcmp(*argv,"-out") == 0)
155 if (--argc < 1) break;
164 if (ctx == NULL) EXIT(1);
166 out=BIO_new(BIO_s_file());
167 if (out == NULL) EXIT(1);
170 BIO_set_fp(out,stdout,BIO_NOCLOSE);
174 if (!BIO_write_filename(out,outfile))
182 BIO_puts(out,"obase=16\nibase=16\n");
184 message(out,"BN_add");
185 if (!test_add(out)) goto err;
186 (void)BIO_flush(out);
188 message(out,"BN_sub");
189 if (!test_sub(out)) goto err;
190 (void)BIO_flush(out);
192 message(out,"BN_lshift1");
193 if (!test_lshift1(out)) goto err;
194 (void)BIO_flush(out);
196 message(out,"BN_lshift (fixed)");
197 if (!test_lshift(out,ctx,BN_bin2bn(lst,sizeof(lst)-1,NULL)))
199 (void)BIO_flush(out);
201 message(out,"BN_lshift");
202 if (!test_lshift(out,ctx,NULL)) goto err;
203 (void)BIO_flush(out);
205 message(out,"BN_rshift1");
206 if (!test_rshift1(out)) goto err;
207 (void)BIO_flush(out);
209 message(out,"BN_rshift");
210 if (!test_rshift(out,ctx)) goto err;
211 (void)BIO_flush(out);
213 message(out,"BN_sqr");
214 if (!test_sqr(out,ctx)) goto err;
215 (void)BIO_flush(out);
217 message(out,"BN_mul");
218 if (!test_mul(out)) goto err;
219 (void)BIO_flush(out);
221 message(out,"BN_div");
222 if (!test_div(out,ctx)) goto err;
223 (void)BIO_flush(out);
225 message(out,"BN_div_word");
226 if (!test_div_word(out)) goto err;
227 (void)BIO_flush(out);
229 message(out,"BN_div_recp");
230 if (!test_div_recp(out,ctx)) goto err;
231 (void)BIO_flush(out);
233 message(out,"BN_mod");
234 if (!test_mod(out,ctx)) goto err;
235 (void)BIO_flush(out);
237 message(out,"BN_mod_mul");
238 if (!test_mod_mul(out,ctx)) goto err;
239 (void)BIO_flush(out);
241 message(out,"BN_mont");
242 if (!test_mont(out,ctx)) goto err;
243 (void)BIO_flush(out);
245 message(out,"BN_mod_exp");
246 if (!test_mod_exp(out,ctx)) goto err;
247 (void)BIO_flush(out);
249 message(out,"BN_mod_exp_mont_consttime");
250 if (!test_mod_exp_mont_consttime(out,ctx)) goto err;
251 if (!test_mod_exp_mont5(out,ctx)) goto err;
252 (void)BIO_flush(out);
254 message(out,"BN_exp");
255 if (!test_exp(out,ctx)) goto err;
256 (void)BIO_flush(out);
258 message(out,"BN_kronecker");
259 if (!test_kron(out,ctx)) goto err;
260 (void)BIO_flush(out);
262 message(out,"BN_mod_sqrt");
263 if (!test_sqrt(out,ctx)) goto err;
264 (void)BIO_flush(out);
266 message(out,"Small prime generation");
267 if (!test_small_prime(out,ctx)) goto err;
268 (void)BIO_flush(out);
270 #ifdef OPENSSL_SYS_WIN32
271 message(out,"Probable prime generation with coprimes disabled");
273 message(out,"Probable prime generation with coprimes");
274 if (!test_probable_prime_coprime(out,ctx)) goto err;
276 (void)BIO_flush(out);
278 #ifndef OPENSSL_NO_EC2M
279 message(out,"BN_GF2m_add");
280 if (!test_gf2m_add(out)) goto err;
281 (void)BIO_flush(out);
283 message(out,"BN_GF2m_mod");
284 if (!test_gf2m_mod(out)) goto err;
285 (void)BIO_flush(out);
287 message(out,"BN_GF2m_mod_mul");
288 if (!test_gf2m_mod_mul(out,ctx)) goto err;
289 (void)BIO_flush(out);
291 message(out,"BN_GF2m_mod_sqr");
292 if (!test_gf2m_mod_sqr(out,ctx)) goto err;
293 (void)BIO_flush(out);
295 message(out,"BN_GF2m_mod_inv");
296 if (!test_gf2m_mod_inv(out,ctx)) goto err;
297 (void)BIO_flush(out);
299 message(out,"BN_GF2m_mod_div");
300 if (!test_gf2m_mod_div(out,ctx)) goto err;
301 (void)BIO_flush(out);
303 message(out,"BN_GF2m_mod_exp");
304 if (!test_gf2m_mod_exp(out,ctx)) goto err;
305 (void)BIO_flush(out);
307 message(out,"BN_GF2m_mod_sqrt");
308 if (!test_gf2m_mod_sqrt(out,ctx)) goto err;
309 (void)BIO_flush(out);
311 message(out,"BN_GF2m_mod_solve_quad");
312 if (!test_gf2m_mod_solve_quad(out,ctx)) goto err;
313 (void)BIO_flush(out);
321 BIO_puts(out,"1\n"); /* make sure the Perl script fed by bc notices
322 * the failure, see test_bn in test/Makefile.ssl*/
323 (void)BIO_flush(out);
324 ERR_load_crypto_strings();
325 ERR_print_errors_fp(stderr);
330 int test_add(BIO *bp)
339 BN_bntest_rand(&a,512,0,0);
340 for (i=0; i<num0; i++)
342 BN_bntest_rand(&b,450+i,0,0);
364 fprintf(stderr,"Add test failed!\n");
374 int test_sub(BIO *bp)
383 for (i=0; i<num0+num1; i++)
387 BN_bntest_rand(&a,512,0,0);
389 if (BN_set_bit(&a,i)==0) return(0);
394 BN_bntest_rand(&b,400+i-num1,0,0);
415 fprintf(stderr,"Subtract test failed!\n");
425 int test_div(BIO *bp, BN_CTX *ctx)
436 for (i=0; i<num0+num1; i++)
440 BN_bntest_rand(&a,400,0,0);
446 BN_bntest_rand(&b,50+3*(i-num1),0,0);
449 BN_div(&d,&c,&a,&b,ctx);
472 BN_mul(&e,&d,&b,ctx);
477 fprintf(stderr,"Division test failed!\n");
489 static void print_word(BIO *bp,BN_ULONG w)
491 #ifdef SIXTY_FOUR_BIT
492 if (sizeof(w) > sizeof(unsigned long))
494 unsigned long h=(unsigned long)(w>>32),
495 l=(unsigned long)(w);
497 if (h) BIO_printf(bp,"%lX%08lX",h,l);
498 else BIO_printf(bp,"%lX",l);
502 BIO_printf(bp,BN_HEX_FMT1,w);
505 int test_div_word(BIO *bp)
514 for (i=0; i<num0; i++)
517 BN_bntest_rand(&a,512,-1,0);
518 BN_bntest_rand(&b,BN_BITS2,-1,0);
523 r = BN_div_word(&b, s);
552 fprintf(stderr,"Division (word) test failed!\n");
561 int test_div_recp(BIO *bp, BN_CTX *ctx)
567 BN_RECP_CTX_init(&recp);
574 for (i=0; i<num0+num1; i++)
578 BN_bntest_rand(&a,400,0,0);
584 BN_bntest_rand(&b,50+3*(i-num1),0,0);
587 BN_RECP_CTX_set(&recp,&b,ctx);
588 BN_div_recp(&d,&c,&a,&recp,ctx);
611 BN_mul(&e,&d,&b,ctx);
616 fprintf(stderr,"Reciprocal division test failed!\n");
617 fprintf(stderr,"a=");
618 BN_print_fp(stderr,&a);
619 fprintf(stderr,"\nb=");
620 BN_print_fp(stderr,&b);
621 fprintf(stderr,"\n");
630 BN_RECP_CTX_free(&recp);
634 int test_mul(BIO *bp)
641 if (ctx == NULL) EXIT(1);
649 for (i=0; i<num0+num1; i++)
653 BN_bntest_rand(&a,100,0,0);
654 BN_bntest_rand(&b,100,0,0);
657 BN_bntest_rand(&b,i-num1,0,0);
660 BN_mul(&c,&a,&b,ctx);
673 BN_div(&d,&e,&c,&a,ctx);
675 if(!BN_is_zero(&d) || !BN_is_zero(&e))
677 fprintf(stderr,"Multiplication test failed!\n");
690 int test_sqr(BIO *bp, BN_CTX *ctx)
700 for (i=0; i<num0; i++)
702 BN_bntest_rand(&a,40+i*10,0,0);
717 BN_div(&d,&e,&c,&a,ctx);
719 if(!BN_is_zero(&d) || !BN_is_zero(&e))
721 fprintf(stderr,"Square test failed!\n");
732 int test_mont(BIO *bp, BN_CTX *ctx)
747 mont=BN_MONT_CTX_new();
751 BN_bntest_rand(&a,100,0,0); /**/
752 BN_bntest_rand(&b,100,0,0); /**/
753 for (i=0; i<num2; i++)
755 int bits = (200*(i+1))/num2;
759 BN_bntest_rand(&n,bits,0,1);
760 BN_MONT_CTX_set(mont,&n,ctx);
762 BN_nnmod(&a,&a,&n,ctx);
763 BN_nnmod(&b,&b,&n,ctx);
765 BN_to_montgomery(&A,&a,mont,ctx);
766 BN_to_montgomery(&B,&b,mont,ctx);
768 BN_mod_mul_montgomery(&c,&A,&B,mont,ctx);/**/
769 BN_from_montgomery(&A,&c,mont,ctx);/**/
775 fprintf(stderr,"%d * %d %% %d\n",
778 BN_num_bits(mont->N));
784 BN_print(bp,&(mont->N));
790 BN_mod_mul(&d,&a,&b,&n,ctx);
794 fprintf(stderr,"Montgomery multiplication test failed!\n");
798 BN_MONT_CTX_free(mont);
809 int test_mod(BIO *bp, BN_CTX *ctx)
811 BIGNUM *a,*b,*c,*d,*e;
820 BN_bntest_rand(a,1024,0,0); /**/
821 for (i=0; i<num0; i++)
823 BN_bntest_rand(b,450+i*10,0,0); /**/
826 BN_mod(c,a,b,ctx);/**/
843 fprintf(stderr,"Modulo test failed!\n");
855 int test_mod_mul(BIO *bp, BN_CTX *ctx)
857 BIGNUM *a,*b,*c,*d,*e;
866 for (j=0; j<3; j++) {
867 BN_bntest_rand(c,1024,0,0); /**/
868 for (i=0; i<num0; i++)
870 BN_bntest_rand(a,475+i*10,0,0); /**/
871 BN_bntest_rand(b,425+i*11,0,0); /**/
874 if (!BN_mod_mul(e,a,b,c,ctx))
878 while ((l=ERR_get_error()))
879 fprintf(stderr,"ERROR:%s\n",
880 ERR_error_string(l,NULL));
892 if ((a->neg ^ b->neg) && !BN_is_zero(e))
894 /* If (a*b) % c is negative, c must be added
895 * in order to obtain the normalized remainder
896 * (new with OpenSSL 0.9.7, previous versions of
897 * BN_mod_mul could generate negative results)
912 fprintf(stderr,"Modulo multiply test failed!\n");
913 ERR_print_errors_fp(stderr);
926 int test_mod_exp(BIO *bp, BN_CTX *ctx)
928 BIGNUM *a,*b,*c,*d,*e;
937 BN_bntest_rand(c,30,0,1); /* must be odd for montgomery */
938 for (i=0; i<num2; i++)
940 BN_bntest_rand(a,20+i*5,0,0); /**/
941 BN_bntest_rand(b,2+i,0,0); /**/
943 if (!BN_mod_exp(d,a,b,c,ctx))
965 fprintf(stderr,"Modulo exponentiation test failed!\n");
977 int test_mod_exp_mont_consttime(BIO *bp, BN_CTX *ctx)
979 BIGNUM *a,*b,*c,*d,*e;
988 BN_bntest_rand(c,30,0,1); /* must be odd for montgomery */
989 for (i=0; i<num2; i++)
991 BN_bntest_rand(a,20+i*5,0,0); /**/
992 BN_bntest_rand(b,2+i,0,0); /**/
994 if (!BN_mod_exp_mont_consttime(d,a,b,c,ctx,NULL))
1013 BN_div(a,b,e,c,ctx);
1016 fprintf(stderr,"Modulo exponentiation test failed!\n");
1028 /* Test constant-time modular exponentiation with 1024-bit inputs,
1029 * which on x86_64 cause a different code branch to be taken.
1031 int test_mod_exp_mont5(BIO *bp, BN_CTX *ctx)
1033 BIGNUM *a,*p,*m,*d,*e;
1043 mont = BN_MONT_CTX_new();
1045 BN_bntest_rand(m,1024,0,1); /* must be odd for montgomery */
1047 BN_bntest_rand(a,1024,0,0);
1049 if(!BN_mod_exp_mont_consttime(d,a,p,m,ctx,NULL))
1053 fprintf(stderr, "Modular exponentiation test failed!\n");
1057 BN_bntest_rand(p,1024,0,0);
1059 if(!BN_mod_exp_mont_consttime(d,a,p,m,ctx,NULL))
1063 fprintf(stderr, "Modular exponentiation test failed!\n");
1066 /* Craft an input whose Montgomery representation is 1,
1067 * i.e., shorter than the modulus m, in order to test
1068 * the const time precomputation scattering/gathering.
1071 BN_MONT_CTX_set(mont,m,ctx);
1072 if(!BN_from_montgomery(e,a,mont,ctx))
1074 if(!BN_mod_exp_mont_consttime(d,e,p,m,ctx,NULL))
1076 if(!BN_mod_exp_simple(a,e,p,m,ctx))
1078 if(BN_cmp(a,d) != 0)
1080 fprintf(stderr,"Modular exponentiation test failed!\n");
1083 /* Finally, some regular test vectors. */
1084 BN_bntest_rand(e,1024,0,0);
1085 if(!BN_mod_exp_mont_consttime(d,e,p,m,ctx,NULL))
1087 if(!BN_mod_exp_simple(a,e,p,m,ctx))
1089 if(BN_cmp(a,d) != 0)
1091 fprintf(stderr,"Modular exponentiation test failed!\n");
1102 int test_exp(BIO *bp, BN_CTX *ctx)
1104 BIGNUM *a,*b,*d,*e,*one;
1114 for (i=0; i<num2; i++)
1116 BN_bntest_rand(a,20+i*5,0,0); /**/
1117 BN_bntest_rand(b,2+i,0,0); /**/
1119 if (BN_exp(d,a,b,ctx) <= 0)
1135 for( ; !BN_is_zero(b) ; BN_sub(b,b,one))
1140 fprintf(stderr,"Exponentiation test failed!\n");
1151 #ifndef OPENSSL_NO_EC2M
1152 int test_gf2m_add(BIO *bp)
1161 for (i=0; i<num0; i++)
1163 BN_rand(&a,512,0,0);
1164 BN_copy(&b, BN_value_one());
1167 BN_GF2m_add(&c,&a,&b);
1168 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1182 /* Test that two added values have the correct parity. */
1183 if((BN_is_odd(&a) && BN_is_odd(&c)) || (!BN_is_odd(&a) && !BN_is_odd(&c)))
1185 fprintf(stderr,"GF(2^m) addition test (a) failed!\n");
1188 BN_GF2m_add(&c,&c,&c);
1189 /* Test that c + c = 0. */
1192 fprintf(stderr,"GF(2^m) addition test (b) failed!\n");
1204 int test_gf2m_mod(BIO *bp)
1206 BIGNUM *a,*b[2],*c,*d,*e;
1208 int p0[] = {163,7,6,3,0,-1};
1209 int p1[] = {193,15,0,-1};
1218 BN_GF2m_arr2poly(p0, b[0]);
1219 BN_GF2m_arr2poly(p1, b[1]);
1221 for (i=0; i<num0; i++)
1223 BN_bntest_rand(a, 1024, 0, 0);
1224 for (j=0; j < 2; j++)
1226 BN_GF2m_mod(c, a, b[j]);
1227 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1241 BN_GF2m_add(d, a, c);
1242 BN_GF2m_mod(e, d, b[j]);
1243 /* Test that a + (a mod p) mod p == 0. */
1246 fprintf(stderr,"GF(2^m) modulo test failed!\n");
1262 int test_gf2m_mod_mul(BIO *bp,BN_CTX *ctx)
1264 BIGNUM *a,*b[2],*c,*d,*e,*f,*g,*h;
1266 int p0[] = {163,7,6,3,0,-1};
1267 int p1[] = {193,15,0,-1};
1279 BN_GF2m_arr2poly(p0, b[0]);
1280 BN_GF2m_arr2poly(p1, b[1]);
1282 for (i=0; i<num0; i++)
1284 BN_bntest_rand(a, 1024, 0, 0);
1285 BN_bntest_rand(c, 1024, 0, 0);
1286 BN_bntest_rand(d, 1024, 0, 0);
1287 for (j=0; j < 2; j++)
1289 BN_GF2m_mod_mul(e, a, c, b[j], ctx);
1290 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1306 BN_GF2m_add(f, a, d);
1307 BN_GF2m_mod_mul(g, f, c, b[j], ctx);
1308 BN_GF2m_mod_mul(h, d, c, b[j], ctx);
1309 BN_GF2m_add(f, e, g);
1310 BN_GF2m_add(f, f, h);
1311 /* Test that (a+d)*c = a*c + d*c. */
1314 fprintf(stderr,"GF(2^m) modular multiplication test failed!\n");
1333 int test_gf2m_mod_sqr(BIO *bp,BN_CTX *ctx)
1335 BIGNUM *a,*b[2],*c,*d;
1337 int p0[] = {163,7,6,3,0,-1};
1338 int p1[] = {193,15,0,-1};
1346 BN_GF2m_arr2poly(p0, b[0]);
1347 BN_GF2m_arr2poly(p1, b[1]);
1349 for (i=0; i<num0; i++)
1351 BN_bntest_rand(a, 1024, 0, 0);
1352 for (j=0; j < 2; j++)
1354 BN_GF2m_mod_sqr(c, a, b[j], ctx);
1356 BN_GF2m_mod_mul(d, a, d, b[j], ctx);
1357 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1363 BIO_puts(bp," ^ 2 % ");
1365 BIO_puts(bp, " = ");
1367 BIO_puts(bp,"; a * a = ");
1373 BN_GF2m_add(d, c, d);
1374 /* Test that a*a = a^2. */
1377 fprintf(stderr,"GF(2^m) modular squaring test failed!\n");
1392 int test_gf2m_mod_inv(BIO *bp,BN_CTX *ctx)
1394 BIGNUM *a,*b[2],*c,*d;
1396 int p0[] = {163,7,6,3,0,-1};
1397 int p1[] = {193,15,0,-1};
1405 BN_GF2m_arr2poly(p0, b[0]);
1406 BN_GF2m_arr2poly(p1, b[1]);
1408 for (i=0; i<num0; i++)
1410 BN_bntest_rand(a, 512, 0, 0);
1411 for (j=0; j < 2; j++)
1413 BN_GF2m_mod_inv(c, a, b[j], ctx);
1414 BN_GF2m_mod_mul(d, a, c, b[j], ctx);
1415 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1421 BIO_puts(bp, " * ");
1423 BIO_puts(bp," - 1 % ");
1429 /* Test that ((1/a)*a) = 1. */
1432 fprintf(stderr,"GF(2^m) modular inversion test failed!\n");
1447 int test_gf2m_mod_div(BIO *bp,BN_CTX *ctx)
1449 BIGNUM *a,*b[2],*c,*d,*e,*f;
1451 int p0[] = {163,7,6,3,0,-1};
1452 int p1[] = {193,15,0,-1};
1462 BN_GF2m_arr2poly(p0, b[0]);
1463 BN_GF2m_arr2poly(p1, b[1]);
1465 for (i=0; i<num0; i++)
1467 BN_bntest_rand(a, 512, 0, 0);
1468 BN_bntest_rand(c, 512, 0, 0);
1469 for (j=0; j < 2; j++)
1471 BN_GF2m_mod_div(d, a, c, b[j], ctx);
1472 BN_GF2m_mod_mul(e, d, c, b[j], ctx);
1473 BN_GF2m_mod_div(f, a, e, b[j], ctx);
1474 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1480 BIO_puts(bp, " = ");
1484 BIO_puts(bp, " % ");
1490 /* Test that ((a/c)*c)/a = 1. */
1493 fprintf(stderr,"GF(2^m) modular division test failed!\n");
1510 int test_gf2m_mod_exp(BIO *bp,BN_CTX *ctx)
1512 BIGNUM *a,*b[2],*c,*d,*e,*f;
1514 int p0[] = {163,7,6,3,0,-1};
1515 int p1[] = {193,15,0,-1};
1525 BN_GF2m_arr2poly(p0, b[0]);
1526 BN_GF2m_arr2poly(p1, b[1]);
1528 for (i=0; i<num0; i++)
1530 BN_bntest_rand(a, 512, 0, 0);
1531 BN_bntest_rand(c, 512, 0, 0);
1532 BN_bntest_rand(d, 512, 0, 0);
1533 for (j=0; j < 2; j++)
1535 BN_GF2m_mod_exp(e, a, c, b[j], ctx);
1536 BN_GF2m_mod_exp(f, a, d, b[j], ctx);
1537 BN_GF2m_mod_mul(e, e, f, b[j], ctx);
1539 BN_GF2m_mod_exp(f, a, f, b[j], ctx);
1540 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1546 BIO_puts(bp, " ^ (");
1550 BIO_puts(bp, ") = ");
1552 BIO_puts(bp, "; - ");
1554 BIO_puts(bp, " % ");
1560 BN_GF2m_add(f, e, f);
1561 /* Test that a^(c+d)=a^c*a^d. */
1564 fprintf(stderr,"GF(2^m) modular exponentiation test failed!\n");
1581 int test_gf2m_mod_sqrt(BIO *bp,BN_CTX *ctx)
1583 BIGNUM *a,*b[2],*c,*d,*e,*f;
1585 int p0[] = {163,7,6,3,0,-1};
1586 int p1[] = {193,15,0,-1};
1596 BN_GF2m_arr2poly(p0, b[0]);
1597 BN_GF2m_arr2poly(p1, b[1]);
1599 for (i=0; i<num0; i++)
1601 BN_bntest_rand(a, 512, 0, 0);
1602 for (j=0; j < 2; j++)
1604 BN_GF2m_mod(c, a, b[j]);
1605 BN_GF2m_mod_sqrt(d, a, b[j], ctx);
1606 BN_GF2m_mod_sqr(e, d, b[j], ctx);
1607 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1613 BIO_puts(bp, " ^ 2 - ");
1619 BN_GF2m_add(f, c, e);
1620 /* Test that d^2 = a, where d = sqrt(a). */
1623 fprintf(stderr,"GF(2^m) modular square root test failed!\n");
1640 int test_gf2m_mod_solve_quad(BIO *bp,BN_CTX *ctx)
1642 BIGNUM *a,*b[2],*c,*d,*e;
1643 int i, j, s = 0, t, ret = 0;
1644 int p0[] = {163,7,6,3,0,-1};
1645 int p1[] = {193,15,0,-1};
1654 BN_GF2m_arr2poly(p0, b[0]);
1655 BN_GF2m_arr2poly(p1, b[1]);
1657 for (i=0; i<num0; i++)
1659 BN_bntest_rand(a, 512, 0, 0);
1660 for (j=0; j < 2; j++)
1662 t = BN_GF2m_mod_solve_quad(c, a, b[j], ctx);
1666 BN_GF2m_mod_sqr(d, c, b[j], ctx);
1667 BN_GF2m_add(d, c, d);
1668 BN_GF2m_mod(e, a, b[j]);
1669 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1675 BIO_puts(bp, " is root of z^2 + z = ");
1677 BIO_puts(bp, " % ");
1683 BN_GF2m_add(e, e, d);
1684 /* Test that solution of quadratic c satisfies c^2 + c = a. */
1687 fprintf(stderr,"GF(2^m) modular solve quadratic test failed!\n");
1694 #if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
1699 BIO_puts(bp, "There are no roots of z^2 + z = ");
1701 BIO_puts(bp, " % ");
1712 fprintf(stderr,"All %i tests of GF(2^m) modular solve quadratic resulted in no roots;\n", num0);
1713 fprintf(stderr,"this is very unlikely and probably indicates an error.\n");
1727 static int genprime_cb(int p, int n, BN_GENCB *arg)
1740 int test_kron(BIO *bp, BN_CTX *ctx)
1745 int legendre, kronecker;
1752 if (a == NULL || b == NULL || r == NULL || t == NULL) goto err;
1754 BN_GENCB_set(&cb, genprime_cb, NULL);
1756 /* We test BN_kronecker(a, b, ctx) just for b odd (Jacobi symbol).
1757 * In this case we know that if b is prime, then BN_kronecker(a, b, ctx)
1758 * is congruent to $a^{(b-1)/2}$, modulo $b$ (Legendre symbol).
1759 * So we generate a random prime b and compare these values
1760 * for a number of random a's. (That is, we run the Solovay-Strassen
1761 * primality test to confirm that b is prime, except that we
1762 * don't want to test whether b is prime but whether BN_kronecker
1765 if (!BN_generate_prime_ex(b, 512, 0, NULL, NULL, &cb)) goto err;
1766 b->neg = rand_neg();
1769 for (i = 0; i < num0; i++)
1771 if (!BN_bntest_rand(a, 512, 0, 0)) goto err;
1772 a->neg = rand_neg();
1774 /* t := (|b|-1)/2 (note that b is odd) */
1775 if (!BN_copy(t, b)) goto err;
1777 if (!BN_sub_word(t, 1)) goto err;
1778 if (!BN_rshift1(t, t)) goto err;
1779 /* r := a^t mod b */
1782 if (!BN_mod_exp_recp(r, a, t, b, ctx)) goto err;
1785 if (BN_is_word(r, 1))
1787 else if (BN_is_zero(r))
1791 if (!BN_add_word(r, 1)) goto err;
1792 if (0 != BN_ucmp(r, b))
1794 fprintf(stderr, "Legendre symbol computation failed\n");
1800 kronecker = BN_kronecker(a, b, ctx);
1801 if (kronecker < -1) goto err;
1802 /* we actually need BN_kronecker(a, |b|) */
1803 if (a->neg && b->neg)
1804 kronecker = -kronecker;
1806 if (legendre != kronecker)
1808 fprintf(stderr, "legendre != kronecker; a = ");
1809 BN_print_fp(stderr, a);
1810 fprintf(stderr, ", b = ");
1811 BN_print_fp(stderr, b);
1812 fprintf(stderr, "\n");
1824 if (a != NULL) BN_free(a);
1825 if (b != NULL) BN_free(b);
1826 if (r != NULL) BN_free(r);
1827 if (t != NULL) BN_free(t);
1831 int test_sqrt(BIO *bp, BN_CTX *ctx)
1841 if (a == NULL || p == NULL || r == NULL) goto err;
1843 BN_GENCB_set(&cb, genprime_cb, NULL);
1845 for (i = 0; i < 16; i++)
1849 unsigned primes[8] = { 2, 3, 5, 7, 11, 13, 17, 19 };
1851 if (!BN_set_word(p, primes[i])) goto err;
1855 if (!BN_set_word(a, 32)) goto err;
1856 if (!BN_set_word(r, 2*i + 1)) goto err;
1858 if (!BN_generate_prime_ex(p, 256, 0, a, r, &cb)) goto err;
1861 p->neg = rand_neg();
1863 for (j = 0; j < num2; j++)
1865 /* construct 'a' such that it is a square modulo p,
1866 * but in general not a proper square and not reduced modulo p */
1867 if (!BN_bntest_rand(r, 256, 0, 3)) goto err;
1868 if (!BN_nnmod(r, r, p, ctx)) goto err;
1869 if (!BN_mod_sqr(r, r, p, ctx)) goto err;
1870 if (!BN_bntest_rand(a, 256, 0, 3)) goto err;
1871 if (!BN_nnmod(a, a, p, ctx)) goto err;
1872 if (!BN_mod_sqr(a, a, p, ctx)) goto err;
1873 if (!BN_mul(a, a, r, ctx)) goto err;
1875 if (!BN_sub(a, a, p)) goto err;
1877 if (!BN_mod_sqrt(r, a, p, ctx)) goto err;
1878 if (!BN_mod_sqr(r, r, p, ctx)) goto err;
1880 if (!BN_nnmod(a, a, p, ctx)) goto err;
1882 if (BN_cmp(a, r) != 0)
1884 fprintf(stderr, "BN_mod_sqrt failed: a = ");
1885 BN_print_fp(stderr, a);
1886 fprintf(stderr, ", r = ");
1887 BN_print_fp(stderr, r);
1888 fprintf(stderr, ", p = ");
1889 BN_print_fp(stderr, p);
1890 fprintf(stderr, "\n");
1903 if (a != NULL) BN_free(a);
1904 if (p != NULL) BN_free(p);
1905 if (r != NULL) BN_free(r);
1909 int test_small_prime(BIO *bp,BN_CTX *ctx)
1911 static const int bits = 10;
1916 if (!BN_generate_prime_ex(&r, bits, 0, NULL, NULL, NULL))
1918 if (BN_num_bits(&r) != bits)
1920 BIO_printf(bp, "Expected %d bit prime, got %d bit number\n", bits, BN_num_bits(&r));
1930 #ifndef OPENSSL_SYS_WIN32
1931 int test_probable_prime_coprime(BIO *bp, BN_CTX *ctx)
1935 BN_ULONG primes[5] = { 2, 3, 5, 7, 11 };
1939 for (i = 0; i < 1000; i++)
1941 if (!bn_probable_prime_dh_coprime(&r, 1024, ctx)) goto err;
1943 for (j = 0; j < 5; j++)
1945 if (BN_mod_word(&r, primes[j]) == 0)
1947 BIO_printf(bp, "Number generated is not coprime to %ld:\n", primes[j]);
1948 BN_print_fp(stdout, &r);
1949 BIO_printf(bp, "\n");
1962 int test_lshift(BIO *bp,BN_CTX *ctx,BIGNUM *a_)
1977 BN_bntest_rand(a,200,0,0); /**/
1980 for (i=0; i<num0; i++)
2000 fprintf(stderr,"Left shift test failed!\n");
2001 fprintf(stderr,"a=");
2002 BN_print_fp(stderr,a);
2003 fprintf(stderr,"\nb=");
2004 BN_print_fp(stderr,b);
2005 fprintf(stderr,"\nc=");
2006 BN_print_fp(stderr,c);
2007 fprintf(stderr,"\nd=");
2008 BN_print_fp(stderr,d);
2009 fprintf(stderr,"\n");
2020 int test_lshift1(BIO *bp)
2029 BN_bntest_rand(a,200,0,0); /**/
2031 for (i=0; i<num0; i++)
2039 BIO_puts(bp," * 2");
2049 fprintf(stderr,"Left shift one test failed!\n");
2061 int test_rshift(BIO *bp,BN_CTX *ctx)
2063 BIGNUM *a,*b,*c,*d,*e;
2073 BN_bntest_rand(a,200,0,0); /**/
2075 for (i=0; i<num0; i++)
2091 BN_div(d,e,a,c,ctx);
2095 fprintf(stderr,"Right shift test failed!\n");
2107 int test_rshift1(BIO *bp)
2116 BN_bntest_rand(a,200,0,0); /**/
2118 for (i=0; i<num0; i++)
2126 BIO_puts(bp," / 2");
2134 if(!BN_is_zero(c) && !BN_abs_is_word(c, 1))
2136 fprintf(stderr,"Right shift one test failed!\n");
2149 static unsigned int neg=0;
2150 static int sign[8]={0,0,0,1,1,0,1,1};
2152 return(sign[(neg++)%8]);