X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fbn%2Fbntest.c;h=6008d151ffcf69bc2476429d41eda3134ef0ee0c;hb=c58f4f73bdb66355b77cd8749afd5deba3d954c1;hp=9ebd68b42954124e4f8dea21d3be3caedd416e17;hpb=78414a6a897db42c9bcf06aa21c705811ab33921;p=oweals%2Fopenssl.git diff --git a/crypto/bn/bntest.c b/crypto/bn/bntest.c index 9ebd68b429..6008d151ff 100644 --- a/crypto/bn/bntest.c +++ b/crypto/bn/bntest.c @@ -5,21 +5,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +34,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,729 +49,1967 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ +/* ==================================================================== + * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * + * Portions of the attached software ("Contribution") are developed by + * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. + * + * The Contribution is licensed pursuant to the Eric Young open source + * license provided above. + * + * The binary polynomial arithmetic software is originally written by + * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories. + * + */ + +/* + * Until the key-gen callbacks are modified to use newer prototypes, we allow + * deprecated functions for openssl-internal code + */ +#ifdef OPENSSL_NO_DEPRECATED +# undef OPENSSL_NO_DEPRECATED +#endif #include #include #include + #include "e_os.h" -#include "bio.h" -#include "bn.h" -#include "rand.h" -#include "x509.h" -#include "err.h" - -#ifdef WINDOWS -#include "../bio/bss_file.c" -#endif -#ifndef NOPROTO -int test_add (BIO *bp); -int test_sub (BIO *bp); -int test_lshift1 (BIO *bp); -int test_lshift (BIO *bp); -int test_rshift1 (BIO *bp); -int test_rshift (BIO *bp); -int test_div (BIO *bp,BN_CTX *ctx); -int test_mul (BIO *bp); -int test_sqr (BIO *bp,BN_CTX *ctx); -int test_mont (BIO *bp,BN_CTX *ctx); -int test_mod (BIO *bp,BN_CTX *ctx); -int test_mod_mul (BIO *bp,BN_CTX *ctx); -int test_mod_exp (BIO *bp,BN_CTX *ctx); +#include +#include +#include +#include +#include + +const int num0 = 100; /* number of tests */ +const int num1 = 50; /* additional tests for some functions */ +const int num2 = 5; /* number of tests for slow functions */ + +int test_add(BIO *bp); +int test_sub(BIO *bp); +int test_lshift1(BIO *bp); +int test_lshift(BIO *bp, BN_CTX *ctx, BIGNUM *a_); +int test_rshift1(BIO *bp); +int test_rshift(BIO *bp, BN_CTX *ctx); +int test_div(BIO *bp, BN_CTX *ctx); +int test_div_word(BIO *bp); +int test_div_recp(BIO *bp, BN_CTX *ctx); +int test_mul(BIO *bp); +int test_sqr(BIO *bp, BN_CTX *ctx); +int test_mont(BIO *bp, BN_CTX *ctx); +int test_mod(BIO *bp, BN_CTX *ctx); +int test_mod_mul(BIO *bp, BN_CTX *ctx); +int test_mod_exp(BIO *bp, BN_CTX *ctx); +int test_mod_exp_mont_consttime(BIO *bp, BN_CTX *ctx); +int test_exp(BIO *bp, BN_CTX *ctx); +int test_gf2m_add(BIO *bp); +int test_gf2m_mod(BIO *bp); +int test_gf2m_mod_mul(BIO *bp, BN_CTX *ctx); +int test_gf2m_mod_sqr(BIO *bp, BN_CTX *ctx); +int test_gf2m_mod_inv(BIO *bp, BN_CTX *ctx); +int test_gf2m_mod_div(BIO *bp, BN_CTX *ctx); +int test_gf2m_mod_exp(BIO *bp, BN_CTX *ctx); +int test_gf2m_mod_sqrt(BIO *bp, BN_CTX *ctx); +int test_gf2m_mod_solve_quad(BIO *bp, BN_CTX *ctx); +int test_kron(BIO *bp, BN_CTX *ctx); +int test_sqrt(BIO *bp, BN_CTX *ctx); int rand_neg(void); -#else -int test_add (); -int test_sub (); -int test_lshift1 (); -int test_lshift (); -int test_rshift1 (); -int test_rshift (); -int test_div (); -int test_mul (); -int test_sqr (); -int test_mont (); -int test_mod (); -int test_mod_mul (); -int test_mod_exp (); -int rand_neg(); +static int results = 0; + +static unsigned char lst[] = + "\xC6\x4F\x43\x04\x2A\xEA\xCA\x6E\x58\x36\x80\x5B\xE8\xC9" + "\x9B\x04\x5D\x48\x36\xC2\xFD\x16\xC9\x64\xF0"; + +static const char rnd_seed[] = + "string to make the random number generator think it has entropy"; + +static void message(BIO *out, char *m) +{ + fprintf(stderr, "test %s\n", m); + BIO_puts(out, "print \"test "); + BIO_puts(out, m); + BIO_puts(out, "\\n\"\n"); +} + +int main(int argc, char *argv[]) +{ + BN_CTX *ctx; + BIO *out; + char *outfile = NULL; + + results = 0; + + RAND_seed(rnd_seed, sizeof rnd_seed); /* or BN_generate_prime may fail */ + + argc--; + argv++; + while (argc >= 1) { + if (strcmp(*argv, "-results") == 0) + results = 1; + else if (strcmp(*argv, "-out") == 0) { + if (--argc < 1) + break; + outfile = *(++argv); + } + argc--; + argv++; + } + + ctx = BN_CTX_new(); + if (ctx == NULL) + EXIT(1); + + out = BIO_new(BIO_s_file()); + if (out == NULL) + EXIT(1); + if (outfile == NULL) { + BIO_set_fp(out, stdout, BIO_NOCLOSE); + } else { + if (!BIO_write_filename(out, outfile)) { + perror(outfile); + EXIT(1); + } + } + + if (!results) + BIO_puts(out, "obase=16\nibase=16\n"); + + message(out, "BN_add"); + if (!test_add(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_sub"); + if (!test_sub(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_lshift1"); + if (!test_lshift1(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_lshift (fixed)"); + if (!test_lshift(out, ctx, BN_bin2bn(lst, sizeof(lst) - 1, NULL))) + goto err; + (void)BIO_flush(out); + + message(out, "BN_lshift"); + if (!test_lshift(out, ctx, NULL)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_rshift1"); + if (!test_rshift1(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_rshift"); + if (!test_rshift(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_sqr"); + if (!test_sqr(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_mul"); + if (!test_mul(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_div"); + if (!test_div(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_div_word"); + if (!test_div_word(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_div_recp"); + if (!test_div_recp(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_mod"); + if (!test_mod(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_mod_mul"); + if (!test_mod_mul(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_mont"); + if (!test_mont(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_mod_exp"); + if (!test_mod_exp(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_mod_exp_mont_consttime"); + if (!test_mod_exp_mont_consttime(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_exp"); + if (!test_exp(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_kronecker"); + if (!test_kron(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_mod_sqrt"); + if (!test_sqrt(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_add"); + if (!test_gf2m_add(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod"); + if (!test_gf2m_mod(out)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod_mul"); + if (!test_gf2m_mod_mul(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod_sqr"); + if (!test_gf2m_mod_sqr(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod_inv"); + if (!test_gf2m_mod_inv(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod_div"); + if (!test_gf2m_mod_div(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod_exp"); + if (!test_gf2m_mod_exp(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod_sqrt"); + if (!test_gf2m_mod_sqrt(out, ctx)) + goto err; + (void)BIO_flush(out); + + message(out, "BN_GF2m_mod_solve_quad"); + if (!test_gf2m_mod_solve_quad(out, ctx)) + goto err; + (void)BIO_flush(out); + + BN_CTX_free(ctx); + BIO_free(out); + + EXIT(0); + err: + BIO_puts(out, "1\n"); /* make sure the Perl script fed by bc + * notices the failure, see test_bn in + * test/Makefile.ssl */ + (void)BIO_flush(out); + ERR_load_crypto_strings(); + ERR_print_errors_fp(stderr); + EXIT(1); + return (1); +} + +int test_add(BIO *bp) +{ + BIGNUM a, b, c; + int i; + + BN_init(&a); + BN_init(&b); + BN_init(&c); + + BN_bntest_rand(&a, 512, 0, 0); + for (i = 0; i < num0; i++) { + BN_bntest_rand(&b, 450 + i, 0, 0); + a.neg = rand_neg(); + b.neg = rand_neg(); + BN_add(&c, &a, &b); + if (bp != NULL) { + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " + "); + BN_print(bp, &b); + BIO_puts(bp, " - "); + } + BN_print(bp, &c); + BIO_puts(bp, "\n"); + } + a.neg = !a.neg; + b.neg = !b.neg; + BN_add(&c, &c, &b); + BN_add(&c, &c, &a); + if (!BN_is_zero(&c)) { + fprintf(stderr, "Add test failed!\n"); + return 0; + } + } + BN_free(&a); + BN_free(&b); + BN_free(&c); + return (1); +} + +int test_sub(BIO *bp) +{ + BIGNUM a, b, c; + int i; + + BN_init(&a); + BN_init(&b); + BN_init(&c); + + for (i = 0; i < num0 + num1; i++) { + if (i < num1) { + BN_bntest_rand(&a, 512, 0, 0); + BN_copy(&b, &a); + if (BN_set_bit(&a, i) == 0) + return (0); + BN_add_word(&b, i); + } else { + BN_bntest_rand(&b, 400 + i - num1, 0, 0); + a.neg = rand_neg(); + b.neg = rand_neg(); + } + BN_sub(&c, &a, &b); + if (bp != NULL) { + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " - "); + BN_print(bp, &b); + BIO_puts(bp, " - "); + } + BN_print(bp, &c); + BIO_puts(bp, "\n"); + } + BN_add(&c, &c, &b); + BN_sub(&c, &c, &a); + if (!BN_is_zero(&c)) { + fprintf(stderr, "Subtract test failed!\n"); + return 0; + } + } + BN_free(&a); + BN_free(&b); + BN_free(&c); + return (1); +} + +int test_div(BIO *bp, BN_CTX *ctx) +{ + BIGNUM a, b, c, d, e; + int i; + + BN_init(&a); + BN_init(&b); + BN_init(&c); + BN_init(&d); + BN_init(&e); + + for (i = 0; i < num0 + num1; i++) { + if (i < num1) { + BN_bntest_rand(&a, 400, 0, 0); + BN_copy(&b, &a); + BN_lshift(&a, &a, i); + BN_add_word(&a, i); + } else + BN_bntest_rand(&b, 50 + 3 * (i - num1), 0, 0); + a.neg = rand_neg(); + b.neg = rand_neg(); + BN_div(&d, &c, &a, &b, ctx); + if (bp != NULL) { + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " / "); + BN_print(bp, &b); + BIO_puts(bp, " - "); + } + BN_print(bp, &d); + BIO_puts(bp, "\n"); + + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " % "); + BN_print(bp, &b); + BIO_puts(bp, " - "); + } + BN_print(bp, &c); + BIO_puts(bp, "\n"); + } + BN_mul(&e, &d, &b, ctx); + BN_add(&d, &e, &c); + BN_sub(&d, &d, &a); + if (!BN_is_zero(&d)) { + fprintf(stderr, "Division test failed!\n"); + return 0; + } + } + BN_free(&a); + BN_free(&b); + BN_free(&c); + BN_free(&d); + BN_free(&e); + return (1); +} + +static void print_word(BIO *bp, BN_ULONG w) +{ +#ifdef SIXTY_FOUR_BIT + if (sizeof(w) > sizeof(unsigned long)) { + unsigned long h = (unsigned long)(w >> 32), l = (unsigned long)(w); + + if (h) + BIO_printf(bp, "%lX%08lX", h, l); + else + BIO_printf(bp, "%lX", l); + return; + } #endif - -static int results=0; - -#ifdef NO_STDIO -#define APPS_WIN16 -#include "bss_file.c" + BIO_printf(bp, "%lX", w); +} + +int test_div_word(BIO *bp) +{ + BIGNUM a, b; + BN_ULONG r, s; + int i; + + BN_init(&a); + BN_init(&b); + + for (i = 0; i < num0; i++) { + do { + BN_bntest_rand(&a, 512, -1, 0); + BN_bntest_rand(&b, BN_BITS2, -1, 0); + s = b.d[0]; + } while (!s); + + BN_copy(&b, &a); + r = BN_div_word(&b, s); + + if (bp != NULL) { + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " / "); + print_word(bp, s); + BIO_puts(bp, " - "); + } + BN_print(bp, &b); + BIO_puts(bp, "\n"); + + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " % "); + print_word(bp, s); + BIO_puts(bp, " - "); + } + print_word(bp, r); + BIO_puts(bp, "\n"); + } + BN_mul_word(&b, s); + BN_add_word(&b, r); + BN_sub(&b, &a, &b); + if (!BN_is_zero(&b)) { + fprintf(stderr, "Division (word) test failed!\n"); + return 0; + } + } + BN_free(&a); + BN_free(&b); + return (1); +} + +int test_div_recp(BIO *bp, BN_CTX *ctx) +{ + BIGNUM a, b, c, d, e; + BN_RECP_CTX recp; + int i; + + BN_RECP_CTX_init(&recp); + BN_init(&a); + BN_init(&b); + BN_init(&c); + BN_init(&d); + BN_init(&e); + + for (i = 0; i < num0 + num1; i++) { + if (i < num1) { + BN_bntest_rand(&a, 400, 0, 0); + BN_copy(&b, &a); + BN_lshift(&a, &a, i); + BN_add_word(&a, i); + } else + BN_bntest_rand(&b, 50 + 3 * (i - num1), 0, 0); + a.neg = rand_neg(); + b.neg = rand_neg(); + BN_RECP_CTX_set(&recp, &b, ctx); + BN_div_recp(&d, &c, &a, &recp, ctx); + if (bp != NULL) { + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " / "); + BN_print(bp, &b); + BIO_puts(bp, " - "); + } + BN_print(bp, &d); + BIO_puts(bp, "\n"); + + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " % "); + BN_print(bp, &b); + BIO_puts(bp, " - "); + } + BN_print(bp, &c); + BIO_puts(bp, "\n"); + } + BN_mul(&e, &d, &b, ctx); + BN_add(&d, &e, &c); + BN_sub(&d, &d, &a); + if (!BN_is_zero(&d)) { + fprintf(stderr, "Reciprocal division test failed!\n"); + fprintf(stderr, "a="); + BN_print_fp(stderr, &a); + fprintf(stderr, "\nb="); + BN_print_fp(stderr, &b); + fprintf(stderr, "\n"); + return 0; + } + } + BN_free(&a); + BN_free(&b); + BN_free(&c); + BN_free(&d); + BN_free(&e); + BN_RECP_CTX_free(&recp); + return (1); +} + +int test_mul(BIO *bp) +{ + BIGNUM a, b, c, d, e; + int i; + BN_CTX *ctx; + + ctx = BN_CTX_new(); + if (ctx == NULL) + EXIT(1); + + BN_init(&a); + BN_init(&b); + BN_init(&c); + BN_init(&d); + BN_init(&e); + + for (i = 0; i < num0 + num1; i++) { + if (i <= num1) { + BN_bntest_rand(&a, 100, 0, 0); + BN_bntest_rand(&b, 100, 0, 0); + } else + BN_bntest_rand(&b, i - num1, 0, 0); + a.neg = rand_neg(); + b.neg = rand_neg(); + BN_mul(&c, &a, &b, ctx); + if (bp != NULL) { + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " * "); + BN_print(bp, &b); + BIO_puts(bp, " - "); + } + BN_print(bp, &c); + BIO_puts(bp, "\n"); + } + BN_div(&d, &e, &c, &a, ctx); + BN_sub(&d, &d, &b); + if (!BN_is_zero(&d) || !BN_is_zero(&e)) { + fprintf(stderr, "Multiplication test failed!\n"); + return 0; + } + } + BN_free(&a); + BN_free(&b); + BN_free(&c); + BN_free(&d); + BN_free(&e); + BN_CTX_free(ctx); + return (1); +} + +int test_sqr(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *c, *d, *e; + int i, ret = 0; + + a = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + if (a == NULL || c == NULL || d == NULL || e == NULL) { + goto err; + } + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 40 + i * 10, 0, 0); + a->neg = rand_neg(); + BN_sqr(c, a, ctx); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * "); + BN_print(bp, a); + BIO_puts(bp, " - "); + } + BN_print(bp, c); + BIO_puts(bp, "\n"); + } + BN_div(d, e, c, a, ctx); + BN_sub(d, d, a); + if (!BN_is_zero(d) || !BN_is_zero(e)) { + fprintf(stderr, "Square test failed!\n"); + goto err; + } + } + + /* Regression test for a BN_sqr overflow bug. */ + BN_hex2bn(&a, + "80000000000000008000000000000001" + "FFFFFFFFFFFFFFFE0000000000000000"); + BN_sqr(c, a, ctx); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * "); + BN_print(bp, a); + BIO_puts(bp, " - "); + } + BN_print(bp, c); + BIO_puts(bp, "\n"); + } + BN_mul(d, a, a, ctx); + if (BN_cmp(c, d)) { + fprintf(stderr, "Square test failed: BN_sqr and BN_mul produce " + "different results!\n"); +#ifdef OPENSSL_FIPS + /* + * This test fails if we are linked to the FIPS module. Unfortunately + * that can't be fixed so we print out the error but continue anyway. + */ + fprintf(stderr, " FIPS build: ignoring.\n"); +#else + goto err; #endif - -int main(argc,argv) -int argc; -char *argv[]; - { - BN_CTX *ctx; - BIO *out; - char *outfile=NULL; - - srand((unsigned int)time(NULL)); - - argc--; - argv++; - while (argc >= 1) - { - if (strcmp(*argv,"-results") == 0) - results=1; - else if (strcmp(*argv,"-out") == 0) - { - if (--argc < 1) break; - outfile= *(++argv); - } - argc--; - argv++; - } - - - ctx=BN_CTX_new(); - if (ctx == NULL) exit(1); - - out=BIO_new(BIO_s_file()); - if (out == NULL) exit(1); - if (outfile == NULL) - { - BIO_set_fp(out,stdout,BIO_NOCLOSE); - } - else - { - if (!BIO_write_filename(out,outfile)) - { - perror(outfile); - exit(1); - } - } - - if (!results) - BIO_puts(out,"obase=16\nibase=16\n"); - - fprintf(stderr,"test BN_add\n"); - if (!test_add(out)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_sub\n"); - if (!test_sub(out)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_lshift1\n"); - if (!test_lshift1(out)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_lshift\n"); - if (!test_lshift(out)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_rshift1\n"); - if (!test_rshift1(out)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_rshift\n"); - if (!test_rshift(out)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_sqr\n"); - if (!test_sqr(out,ctx)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_mul\n"); - if (!test_mul(out)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_div\n"); - if (!test_div(out,ctx)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_mod\n"); - if (!test_mod(out,ctx)) goto err; - fflush(stdout); - - fprintf(stderr,"test BN_mod_mul\n"); - if (!test_mod_mul(out,ctx)) goto err; - fflush(stdout); - -/* - fprintf(stderr,"test BN_mont\n"); - if (!test_mont(out,ctx)) goto err; - fflush(stdout); -*/ - fprintf(stderr,"test BN_mod_exp\n"); - if (!test_mod_exp(out,ctx)) goto err; - fflush(stdout); - -/**/ - exit(0); -err: - ERR_load_crypto_strings(); - ERR_print_errors(out); - exit(1); - return(1); - } - -int test_add(bp) -BIO *bp; - { - BIGNUM *a,*b,*c; - int i; - int j; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - - BN_rand(a,512,0,0); - for (i=0; i<100; i++) - { - BN_rand(b,450+i,0,0); - a->neg=rand_neg(); - b->neg=rand_neg(); - if (bp == NULL) - for (j=0; j<10000; j++) - BN_add(c,a,b); - BN_add(c,a,b); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," + "); - BN_print(bp,b); - BIO_puts(bp," - "); - } - BN_print(bp,c); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - return(1); - } - -int test_sub(bp) -BIO *bp; - { - BIGNUM *a,*b,*c; - int i; - int j; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - - BN_rand(a,512,0,0); - for (i=0; i<100; i++) - { - BN_rand(b,400+i,0,0); - a->neg=rand_neg(); - b->neg=rand_neg(); - if (bp == NULL) - for (j=0; j<10000; j++) - BN_sub(c,a,b); - BN_sub(c,a,b); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," - "); - BN_print(bp,b); - BIO_puts(bp," - "); - } - BN_print(bp,c); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - return(1); - } - -int test_div(bp,ctx) -BIO *bp; -BN_CTX *ctx; - { - BIGNUM *a,*b,*c,*d; - int i; - int j; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - d=BN_new(); - - BN_rand(a,400,0,0); - for (i=0; i<100; i++) - { - BN_rand(b,50+i,0,0); - a->neg=rand_neg(); - b->neg=rand_neg(); - if (bp == NULL) - for (j=0; j<100; j++) - BN_div(d,c,a,b,ctx); - BN_div(d,c,a,b,ctx); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," / "); - BN_print(bp,b); - BIO_puts(bp," - "); - } - BN_print(bp,d); - BIO_puts(bp,"\n"); - - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," % "); - BN_print(bp,b); - BIO_puts(bp," - "); - } - BN_print(bp,c); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - BN_free(d); - return(1); - } - -int test_mul(bp) -BIO *bp; - { - BIGNUM *a,*b,*c; - int i; - int j; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - - BN_rand(a,200,0,0); - for (i=0; i<100; i++) - { - BN_rand(b,250+i,0,0); - a->neg=rand_neg(); - b->neg=rand_neg(); - if (bp == NULL) - for (j=0; j<100; j++) - BN_mul(c,a,b); - BN_mul(c,a,b); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," * "); - BN_print(bp,b); - BIO_puts(bp," - "); - } - BN_print(bp,c); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - return(1); - } - -int test_sqr(bp,ctx) -BIO *bp; -BN_CTX *ctx; - { - BIGNUM *a,*c; - int i; - int j; - - a=BN_new(); - c=BN_new(); - - for (i=0; i<40; i++) - { - BN_rand(a,40+i*10,0,0); - a->neg=rand_neg(); - if (bp == NULL) - for (j=0; j<100; j++) - BN_sqr(c,a,ctx); - BN_sqr(c,a,ctx); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," * "); - BN_print(bp,a); - BIO_puts(bp," - "); - } - BN_print(bp,c); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(c); - return(1); - } - -int test_mont(bp,ctx) -BIO *bp; -BN_CTX *ctx; - { - BIGNUM *a,*b,*c,*A,*B; - BIGNUM *n; - int i; - int j; - BN_MONT_CTX *mont; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - A=BN_new(); - B=BN_new(); - n=BN_new(); - - mont=BN_MONT_CTX_new(); - - BN_rand(a,100,0,0); /**/ - BN_rand(b,100,0,0); /**/ - for (i=0; i<10; i++) - { - BN_rand(n,(100%BN_BITS2+1)*BN_BITS2*i*BN_BITS2,0,1); /**/ - BN_MONT_CTX_set(mont,n,ctx); - - BN_to_montgomery(A,a,mont,ctx); - BN_to_montgomery(B,b,mont,ctx); - - if (bp == NULL) - for (j=0; j<100; j++) - BN_mod_mul_montgomery(c,A,B,mont,ctx);/**/ - BN_mod_mul_montgomery(c,A,B,mont,ctx);/**/ - BN_from_montgomery(A,c,mont,ctx);/**/ - if (bp != NULL) - { - if (!results) - { + } + + /* Regression test for a BN_sqr overflow bug. */ + BN_hex2bn(&a, + "80000000000000000000000080000001" + "FFFFFFFE000000000000000000000000"); + BN_sqr(c, a, ctx); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * "); + BN_print(bp, a); + BIO_puts(bp, " - "); + } + BN_print(bp, c); + BIO_puts(bp, "\n"); + } + BN_mul(d, a, a, ctx); + if (BN_cmp(c, d)) { + fprintf(stderr, "Square test failed: BN_sqr and BN_mul produce " + "different results!\n"); + goto err; + } + ret = 1; + err: + if (a != NULL) + BN_free(a); + if (c != NULL) + BN_free(c); + if (d != NULL) + BN_free(d); + if (e != NULL) + BN_free(e); + return ret; +} + +int test_mont(BIO *bp, BN_CTX *ctx) +{ + BIGNUM a, b, c, d, A, B; + BIGNUM n; + int i; + BN_MONT_CTX *mont; + + BN_init(&a); + BN_init(&b); + BN_init(&c); + BN_init(&d); + BN_init(&A); + BN_init(&B); + BN_init(&n); + + mont = BN_MONT_CTX_new(); + + BN_bntest_rand(&a, 100, 0, 0); + BN_bntest_rand(&b, 100, 0, 0); + for (i = 0; i < num2; i++) { + int bits = (200 * (i + 1)) / num2; + + if (bits == 0) + continue; + BN_bntest_rand(&n, bits, 0, 1); + BN_MONT_CTX_set(mont, &n, ctx); + + BN_nnmod(&a, &a, &n, ctx); + BN_nnmod(&b, &b, &n, ctx); + + BN_to_montgomery(&A, &a, mont, ctx); + BN_to_montgomery(&B, &b, mont, ctx); + + BN_mod_mul_montgomery(&c, &A, &B, mont, ctx); + BN_from_montgomery(&A, &c, mont, ctx); + if (bp != NULL) { + if (!results) { #ifdef undef -fprintf(stderr,"%d * %d %% %d\n", -BN_num_bits(a), -BN_num_bits(b), -BN_num_bits(mont->N)); + fprintf(stderr, "%d * %d %% %d\n", + BN_num_bits(&a), + BN_num_bits(&b), BN_num_bits(mont->N)); +#endif + BN_print(bp, &a); + BIO_puts(bp, " * "); + BN_print(bp, &b); + BIO_puts(bp, " % "); + BN_print(bp, &(mont->N)); + BIO_puts(bp, " - "); + } + BN_print(bp, &A); + BIO_puts(bp, "\n"); + } + BN_mod_mul(&d, &a, &b, &n, ctx); + BN_sub(&d, &d, &A); + if (!BN_is_zero(&d)) { + fprintf(stderr, "Montgomery multiplication test failed!\n"); + return 0; + } + } + BN_MONT_CTX_free(mont); + BN_free(&a); + BN_free(&b); + BN_free(&c); + BN_free(&d); + BN_free(&A); + BN_free(&B); + BN_free(&n); + return (1); +} + +int test_mod(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b, *c, *d, *e; + int i; + + a = BN_new(); + b = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + + BN_bntest_rand(a, 1024, 0, 0); + for (i = 0; i < num0; i++) { + BN_bntest_rand(b, 450 + i * 10, 0, 0); + a->neg = rand_neg(); + b->neg = rand_neg(); + BN_mod(c, a, b, ctx); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " % "); + BN_print(bp, b); + BIO_puts(bp, " - "); + } + BN_print(bp, c); + BIO_puts(bp, "\n"); + } + BN_div(d, e, a, b, ctx); + BN_sub(e, e, c); + if (!BN_is_zero(e)) { + fprintf(stderr, "Modulo test failed!\n"); + return 0; + } + } + BN_free(a); + BN_free(b); + BN_free(c); + BN_free(d); + BN_free(e); + return (1); +} + +int test_mod_mul(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b, *c, *d, *e; + int i, j; + + a = BN_new(); + b = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + + for (j = 0; j < 3; j++) { + BN_bntest_rand(c, 1024, 0, 0); + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 475 + i * 10, 0, 0); + BN_bntest_rand(b, 425 + i * 11, 0, 0); + a->neg = rand_neg(); + b->neg = rand_neg(); + if (!BN_mod_mul(e, a, b, c, ctx)) { + unsigned long l; + + while ((l = ERR_get_error())) + fprintf(stderr, "ERROR:%s\n", ERR_error_string(l, NULL)); + EXIT(1); + } + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * "); + BN_print(bp, b); + BIO_puts(bp, " % "); + BN_print(bp, c); + if ((a->neg ^ b->neg) && !BN_is_zero(e)) { + /* + * If (a*b) % c is negative, c must be added in order + * to obtain the normalized remainder (new with + * OpenSSL 0.9.7, previous versions of BN_mod_mul + * could generate negative results) + */ + BIO_puts(bp, " + "); + BN_print(bp, c); + } + BIO_puts(bp, " - "); + } + BN_print(bp, e); + BIO_puts(bp, "\n"); + } + BN_mul(d, a, b, ctx); + BN_sub(d, d, e); + BN_div(a, b, d, c, ctx); + if (!BN_is_zero(b)) { + fprintf(stderr, "Modulo multiply test failed!\n"); + ERR_print_errors_fp(stderr); + return 0; + } + } + } + BN_free(a); + BN_free(b); + BN_free(c); + BN_free(d); + BN_free(e); + return (1); +} + +int test_mod_exp(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b, *c, *d, *e; + int i; + + a = BN_new(); + b = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + + BN_bntest_rand(c, 30, 0, 1); /* must be odd for montgomery */ + for (i = 0; i < num2; i++) { + BN_bntest_rand(a, 20 + i * 5, 0, 0); + BN_bntest_rand(b, 2 + i, 0, 0); + + if (!BN_mod_exp(d, a, b, c, ctx)) + return (0); + + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " ^ "); + BN_print(bp, b); + BIO_puts(bp, " % "); + BN_print(bp, c); + BIO_puts(bp, " - "); + } + BN_print(bp, d); + BIO_puts(bp, "\n"); + } + BN_exp(e, a, b, ctx); + BN_sub(e, e, d); + BN_div(a, b, e, c, ctx); + if (!BN_is_zero(b)) { + fprintf(stderr, "Modulo exponentiation test failed!\n"); + return 0; + } + } + BN_free(a); + BN_free(b); + BN_free(c); + BN_free(d); + BN_free(e); + return (1); +} + +int test_mod_exp_mont_consttime(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b, *c, *d, *e; + int i; + + a = BN_new(); + b = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + + BN_bntest_rand(c, 30, 0, 1); /* must be odd for montgomery */ + for (i = 0; i < num2; i++) { + BN_bntest_rand(a, 20 + i * 5, 0, 0); + BN_bntest_rand(b, 2 + i, 0, 0); + + if (!BN_mod_exp_mont_consttime(d, a, b, c, ctx, NULL)) + return (00); + + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " ^ "); + BN_print(bp, b); + BIO_puts(bp, " % "); + BN_print(bp, c); + BIO_puts(bp, " - "); + } + BN_print(bp, d); + BIO_puts(bp, "\n"); + } + BN_exp(e, a, b, ctx); + BN_sub(e, e, d); + BN_div(a, b, e, c, ctx); + if (!BN_is_zero(b)) { + fprintf(stderr, "Modulo exponentiation test failed!\n"); + return 0; + } + } + BN_free(a); + BN_free(b); + BN_free(c); + BN_free(d); + BN_free(e); + return (1); +} + +int test_exp(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b, *d, *e, *one; + int i; + + a = BN_new(); + b = BN_new(); + d = BN_new(); + e = BN_new(); + one = BN_new(); + BN_one(one); + + for (i = 0; i < num2; i++) { + BN_bntest_rand(a, 20 + i * 5, 0, 0); + BN_bntest_rand(b, 2 + i, 0, 0); + + if (BN_exp(d, a, b, ctx) <= 0) + return (0); + + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " ^ "); + BN_print(bp, b); + BIO_puts(bp, " - "); + } + BN_print(bp, d); + BIO_puts(bp, "\n"); + } + BN_one(e); + for (; !BN_is_zero(b); BN_sub(b, b, one)) + BN_mul(e, e, a, ctx); + BN_sub(e, e, d); + if (!BN_is_zero(e)) { + fprintf(stderr, "Exponentiation test failed!\n"); + return 0; + } + } + BN_free(a); + BN_free(b); + BN_free(d); + BN_free(e); + BN_free(one); + return (1); +} + +int test_gf2m_add(BIO *bp) +{ + BIGNUM a, b, c; + int i, ret = 0; + + BN_init(&a); + BN_init(&b); + BN_init(&c); + + for (i = 0; i < num0; i++) { + BN_rand(&a, 512, 0, 0); + BN_copy(&b, BN_value_one()); + a.neg = rand_neg(); + b.neg = rand_neg(); + BN_GF2m_add(&c, &a, &b); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, &a); + BIO_puts(bp, " ^ "); + BN_print(bp, &b); + BIO_puts(bp, " = "); + } + BN_print(bp, &c); + BIO_puts(bp, "\n"); + } +#endif + /* Test that two added values have the correct parity. */ + if ((BN_is_odd(&a) && BN_is_odd(&c)) + || (!BN_is_odd(&a) && !BN_is_odd(&c))) { + fprintf(stderr, "GF(2^m) addition test (a) failed!\n"); + goto err; + } + BN_GF2m_add(&c, &c, &c); + /* Test that c + c = 0. */ + if (!BN_is_zero(&c)) { + fprintf(stderr, "GF(2^m) addition test (b) failed!\n"); + goto err; + } + } + ret = 1; + err: + BN_free(&a); + BN_free(&b); + BN_free(&c); + return ret; +} + +int test_gf2m_mod(BIO *bp) +{ + BIGNUM *a, *b[2], *c, *d, *e; + int i, j, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 1024, 0, 0); + for (j = 0; j < 2; j++) { + BN_GF2m_mod(c, a, b[j]); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " % "); + BN_print(bp, b[j]); + BIO_puts(bp, " - "); + BN_print(bp, c); + BIO_puts(bp, "\n"); + } + } +#endif + BN_GF2m_add(d, a, c); + BN_GF2m_mod(e, d, b[j]); + /* Test that a + (a mod p) mod p == 0. */ + if (!BN_is_zero(e)) { + fprintf(stderr, "GF(2^m) modulo test failed!\n"); + goto err; + } + } + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + BN_free(e); + return ret; +} + +int test_gf2m_mod_mul(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b[2], *c, *d, *e, *f, *g, *h; + int i, j, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + f = BN_new(); + g = BN_new(); + h = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 1024, 0, 0); + BN_bntest_rand(c, 1024, 0, 0); + BN_bntest_rand(d, 1024, 0, 0); + for (j = 0; j < 2; j++) { + BN_GF2m_mod_mul(e, a, c, b[j], ctx); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * "); + BN_print(bp, c); + BIO_puts(bp, " % "); + BN_print(bp, b[j]); + BIO_puts(bp, " - "); + BN_print(bp, e); + BIO_puts(bp, "\n"); + } + } +#endif + BN_GF2m_add(f, a, d); + BN_GF2m_mod_mul(g, f, c, b[j], ctx); + BN_GF2m_mod_mul(h, d, c, b[j], ctx); + BN_GF2m_add(f, e, g); + BN_GF2m_add(f, f, h); + /* Test that (a+d)*c = a*c + d*c. */ + if (!BN_is_zero(f)) { + fprintf(stderr, + "GF(2^m) modular multiplication test failed!\n"); + goto err; + } + } + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + BN_free(e); + BN_free(f); + BN_free(g); + BN_free(h); + return ret; +} + +int test_gf2m_mod_sqr(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b[2], *c, *d; + int i, j, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 1024, 0, 0); + for (j = 0; j < 2; j++) { + BN_GF2m_mod_sqr(c, a, b[j], ctx); + BN_copy(d, a); + BN_GF2m_mod_mul(d, a, d, b[j], ctx); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " ^ 2 % "); + BN_print(bp, b[j]); + BIO_puts(bp, " = "); + BN_print(bp, c); + BIO_puts(bp, "; a * a = "); + BN_print(bp, d); + BIO_puts(bp, "\n"); + } + } +#endif + BN_GF2m_add(d, c, d); + /* Test that a*a = a^2. */ + if (!BN_is_zero(d)) { + fprintf(stderr, "GF(2^m) modular squaring test failed!\n"); + goto err; + } + } + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + return ret; +} + +int test_gf2m_mod_inv(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b[2], *c, *d; + int i, j, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 512, 0, 0); + for (j = 0; j < 2; j++) { + BN_GF2m_mod_inv(c, a, b[j], ctx); + BN_GF2m_mod_mul(d, a, c, b[j], ctx); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * "); + BN_print(bp, c); + BIO_puts(bp, " - 1 % "); + BN_print(bp, b[j]); + BIO_puts(bp, "\n"); + } + } +#endif + /* Test that ((1/a)*a) = 1. */ + if (!BN_is_one(d)) { + fprintf(stderr, "GF(2^m) modular inversion test failed!\n"); + goto err; + } + } + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + return ret; +} + +int test_gf2m_mod_div(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b[2], *c, *d, *e, *f; + int i, j, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + f = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 512, 0, 0); + BN_bntest_rand(c, 512, 0, 0); + for (j = 0; j < 2; j++) { + BN_GF2m_mod_div(d, a, c, b[j], ctx); + BN_GF2m_mod_mul(e, d, c, b[j], ctx); + BN_GF2m_mod_div(f, a, e, b[j], ctx); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " = "); + BN_print(bp, c); + BIO_puts(bp, " * "); + BN_print(bp, d); + BIO_puts(bp, " % "); + BN_print(bp, b[j]); + BIO_puts(bp, "\n"); + } + } +#endif + /* Test that ((a/c)*c)/a = 1. */ + if (!BN_is_one(f)) { + fprintf(stderr, "GF(2^m) modular division test failed!\n"); + goto err; + } + } + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + BN_free(e); + BN_free(f); + return ret; +} + +int test_gf2m_mod_exp(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b[2], *c, *d, *e, *f; + int i, j, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + f = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 512, 0, 0); + BN_bntest_rand(c, 512, 0, 0); + BN_bntest_rand(d, 512, 0, 0); + for (j = 0; j < 2; j++) { + BN_GF2m_mod_exp(e, a, c, b[j], ctx); + BN_GF2m_mod_exp(f, a, d, b[j], ctx); + BN_GF2m_mod_mul(e, e, f, b[j], ctx); + BN_add(f, c, d); + BN_GF2m_mod_exp(f, a, f, b[j], ctx); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " ^ ("); + BN_print(bp, c); + BIO_puts(bp, " + "); + BN_print(bp, d); + BIO_puts(bp, ") = "); + BN_print(bp, e); + BIO_puts(bp, "; - "); + BN_print(bp, f); + BIO_puts(bp, " % "); + BN_print(bp, b[j]); + BIO_puts(bp, "\n"); + } + } +#endif + BN_GF2m_add(f, e, f); + /* Test that a^(c+d)=a^c*a^d. */ + if (!BN_is_zero(f)) { + fprintf(stderr, + "GF(2^m) modular exponentiation test failed!\n"); + goto err; + } + } + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + BN_free(e); + BN_free(f); + return ret; +} + +int test_gf2m_mod_sqrt(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b[2], *c, *d, *e, *f; + int i, j, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + f = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 512, 0, 0); + for (j = 0; j < 2; j++) { + BN_GF2m_mod(c, a, b[j]); + BN_GF2m_mod_sqrt(d, a, b[j], ctx); + BN_GF2m_mod_sqr(e, d, b[j], ctx); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, d); + BIO_puts(bp, " ^ 2 - "); + BN_print(bp, a); + BIO_puts(bp, "\n"); + } + } +#endif + BN_GF2m_add(f, c, e); + /* Test that d^2 = a, where d = sqrt(a). */ + if (!BN_is_zero(f)) { + fprintf(stderr, "GF(2^m) modular square root test failed!\n"); + goto err; + } + } + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + BN_free(e); + BN_free(f); + return ret; +} + +int test_gf2m_mod_solve_quad(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b[2], *c, *d, *e; + int i, j, s = 0, t, ret = 0; + unsigned int p0[] = { 163, 7, 6, 3, 0 }; + unsigned int p1[] = { 193, 15, 0 }; + + a = BN_new(); + b[0] = BN_new(); + b[1] = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + + BN_GF2m_arr2poly(p0, b[0]); + BN_GF2m_arr2poly(p1, b[1]); + + for (i = 0; i < num0; i++) { + BN_bntest_rand(a, 512, 0, 0); + for (j = 0; j < 2; j++) { + t = BN_GF2m_mod_solve_quad(c, a, b[j], ctx); + if (t) { + s++; + BN_GF2m_mod_sqr(d, c, b[j], ctx); + BN_GF2m_add(d, c, d); + BN_GF2m_mod(e, a, b[j]); +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BN_print(bp, c); + BIO_puts(bp, " is root of z^2 + z = "); + BN_print(bp, a); + BIO_puts(bp, " % "); + BN_print(bp, b[j]); + BIO_puts(bp, "\n"); + } + } +#endif + BN_GF2m_add(e, e, d); + /* + * Test that solution of quadratic c satisfies c^2 + c = a. + */ + if (!BN_is_zero(e)) { + fprintf(stderr, + "GF(2^m) modular solve quadratic test failed!\n"); + goto err; + } + + } else { +#if 0 /* make test uses ouput in bc but bc can't + * handle GF(2^m) arithmetic */ + if (bp != NULL) { + if (!results) { + BIO_puts(bp, "There are no roots of z^2 + z = "); + BN_print(bp, a); + BIO_puts(bp, " % "); + BN_print(bp, b[j]); + BIO_puts(bp, "\n"); + } + } #endif - BN_print(bp,a); - BIO_puts(bp," * "); - BN_print(bp,b); - BIO_puts(bp," % "); - BN_print(bp,mont->N); - BIO_puts(bp," - "); - } - BN_print(bp,A); - BIO_puts(bp,"\n"); - } - } - BN_MONT_CTX_free(mont); - BN_free(a); - BN_free(b); - BN_free(c); - return(1); - } - -int test_mod(bp,ctx) -BIO *bp; -BN_CTX *ctx; - { - BIGNUM *a,*b,*c; - int i; - int j; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - - BN_rand(a,1024,0,0); /**/ - for (i=0; i<20; i++) - { - BN_rand(b,450+i*10,0,0); /**/ - a->neg=rand_neg(); - b->neg=rand_neg(); - if (bp == NULL) - for (j=0; j<100; j++) - BN_mod(c,a,b,ctx);/**/ - BN_mod(c,a,b,ctx);/**/ - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," % "); - BN_print(bp,b); - BIO_puts(bp," - "); - } - BN_print(bp,c); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - return(1); - } - -int test_mod_mul(bp,ctx) -BIO *bp; -BN_CTX *ctx; - { - BIGNUM *a,*b,*c,*d,*e; - int i; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - d=BN_new(); - e=BN_new(); - - BN_rand(c,1024,0,0); /**/ - for (i=0; i<10; i++) - { - BN_rand(a,475+i*10,0,0); /**/ - BN_rand(b,425+i*10,0,0); /**/ - a->neg=rand_neg(); - b->neg=rand_neg(); - /* if (bp == NULL) - for (j=0; j<100; j++) - BN_mod_mul(d,a,b,c,ctx);*/ /**/ - - if (!BN_mod_mul(e,a,b,c,ctx)) - { - unsigned long l; - - while ((l=ERR_get_error())) - fprintf(stderr,"ERROR:%s\n", - ERR_error_string(l,NULL)); - exit(1); - } - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," * "); - BN_print(bp,b); - BIO_puts(bp," % "); - BN_print(bp,c); - BIO_puts(bp," - "); - } - BN_print(bp,e); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - BN_free(d); - BN_free(e); - return(1); - } - -int test_mod_exp(bp,ctx) -BIO *bp; -BN_CTX *ctx; - { - BIGNUM *a,*b,*c,*d,*e; - int i; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - d=BN_new(); - e=BN_new(); - - BN_rand(c,30,0,1); /* must be odd for montgomery */ - for (i=0; i<6; i++) - { - BN_rand(a,20+i*5,0,0); /**/ - BN_rand(b,2+i,0,0); /**/ - - if (!BN_mod_exp(d,a,b,c,ctx)) - return(00); - - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," ^ "); - BN_print(bp,b); - BIO_puts(bp," % "); - BN_print(bp,c); - BIO_puts(bp," - "); - } - BN_print(bp,d); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - BN_free(d); - BN_free(e); - return(1); - } - -int test_lshift(bp) -BIO *bp; - { - BIGNUM *a,*b,*c; - int i; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - BN_one(c); - - BN_rand(a,200,0,0); /**/ - a->neg=rand_neg(); - for (i=0; i<70; i++) - { - BN_lshift(b,a,i+1); - BN_add(c,c,c); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," * "); - BN_print(bp,c); - BIO_puts(bp," - "); - } - BN_print(bp,b); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - return(1); - } - -int test_lshift1(bp) -BIO *bp; - { - BIGNUM *a,*b; - int i; - - a=BN_new(); - b=BN_new(); - - BN_rand(a,200,0,0); /**/ - a->neg=rand_neg(); - for (i=0; i<70; i++) - { - BN_lshift1(b,a); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," * 2"); - BIO_puts(bp," - "); - } - BN_print(bp,b); - BIO_puts(bp,"\n"); - } - BN_copy(a,b); - } - BN_free(a); - BN_free(b); - return(1); - } - -int test_rshift(bp) -BIO *bp; - { - BIGNUM *a,*b,*c; - int i; - - a=BN_new(); - b=BN_new(); - c=BN_new(); - BN_one(c); - - BN_rand(a,200,0,0); /**/ - a->neg=rand_neg(); - for (i=0; i<70; i++) - { - BN_rshift(b,a,i+1); - BN_add(c,c,c); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," / "); - BN_print(bp,c); - BIO_puts(bp," - "); - } - BN_print(bp,b); - BIO_puts(bp,"\n"); - } - } - BN_free(a); - BN_free(b); - BN_free(c); - return(1); - } - -int test_rshift1(bp) -BIO *bp; - { - BIGNUM *a,*b; - int i; - - a=BN_new(); - b=BN_new(); - - BN_rand(a,200,0,0); /**/ - a->neg=rand_neg(); - for (i=0; i<70; i++) - { - BN_rshift1(b,a); - if (bp != NULL) - { - if (!results) - { - BN_print(bp,a); - BIO_puts(bp," / 2"); - BIO_puts(bp," - "); - } - BN_print(bp,b); - BIO_puts(bp,"\n"); - } - BN_copy(a,b); - } - BN_free(a); - BN_free(b); - return(1); - } - -int rand_neg() - { - static unsigned int neg=0; - static int sign[8]={0,0,0,1,1,0,1,1}; - - return(sign[(neg++)%8]); - } + } + } + } + if (s == 0) { + fprintf(stderr, + "All %i tests of GF(2^m) modular solve quadratic resulted in no roots;\n", + num0); + fprintf(stderr, + "this is very unlikely and probably indicates an error.\n"); + goto err; + } + ret = 1; + err: + BN_free(a); + BN_free(b[0]); + BN_free(b[1]); + BN_free(c); + BN_free(d); + BN_free(e); + return ret; +} + +static int genprime_cb(int p, int n, BN_GENCB *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); + return 1; +} + +int test_kron(BIO *bp, BN_CTX *ctx) +{ + BN_GENCB cb; + BIGNUM *a, *b, *r, *t; + int i; + int legendre, kronecker; + int ret = 0; + + a = BN_new(); + b = BN_new(); + r = BN_new(); + t = BN_new(); + if (a == NULL || b == NULL || r == NULL || t == NULL) + goto err; + + BN_GENCB_set(&cb, genprime_cb, NULL); + + /* + * We test BN_kronecker(a, b, ctx) just for b odd (Jacobi symbol). In + * this case we know that if b is prime, then BN_kronecker(a, b, ctx) is + * congruent to $a^{(b-1)/2}$, modulo $b$ (Legendre symbol). So we + * generate a random prime b and compare these values for a number of + * random a's. (That is, we run the Solovay-Strassen primality test to + * confirm that b is prime, except that we don't want to test whether b + * is prime but whether BN_kronecker works.) + */ + + if (!BN_generate_prime_ex(b, 512, 0, NULL, NULL, &cb)) + goto err; + b->neg = rand_neg(); + putc('\n', stderr); + + for (i = 0; i < num0; i++) { + if (!BN_bntest_rand(a, 512, 0, 0)) + goto err; + a->neg = rand_neg(); + + /* t := (|b|-1)/2 (note that b is odd) */ + if (!BN_copy(t, b)) + goto err; + t->neg = 0; + if (!BN_sub_word(t, 1)) + goto err; + if (!BN_rshift1(t, t)) + goto err; + /* r := a^t mod b */ + b->neg = 0; + + if (!BN_mod_exp_recp(r, a, t, b, ctx)) + goto err; + b->neg = 1; + + if (BN_is_word(r, 1)) + legendre = 1; + else if (BN_is_zero(r)) + legendre = 0; + else { + if (!BN_add_word(r, 1)) + goto err; + if (0 != BN_ucmp(r, b)) { + fprintf(stderr, "Legendre symbol computation failed\n"); + goto err; + } + legendre = -1; + } + + kronecker = BN_kronecker(a, b, ctx); + if (kronecker < -1) + goto err; + /* we actually need BN_kronecker(a, |b|) */ + if (a->neg && b->neg) + kronecker = -kronecker; + + if (legendre != kronecker) { + fprintf(stderr, "legendre != kronecker; a = "); + BN_print_fp(stderr, a); + fprintf(stderr, ", b = "); + BN_print_fp(stderr, b); + fprintf(stderr, "\n"); + goto err; + } + + putc('.', stderr); + fflush(stderr); + } + + putc('\n', stderr); + fflush(stderr); + ret = 1; + err: + if (a != NULL) + BN_free(a); + if (b != NULL) + BN_free(b); + if (r != NULL) + BN_free(r); + if (t != NULL) + BN_free(t); + return ret; +} + +int test_sqrt(BIO *bp, BN_CTX *ctx) +{ + BN_GENCB cb; + BIGNUM *a, *p, *r; + int i, j; + int ret = 0; + + a = BN_new(); + p = BN_new(); + r = BN_new(); + if (a == NULL || p == NULL || r == NULL) + goto err; + + BN_GENCB_set(&cb, genprime_cb, NULL); + + for (i = 0; i < 16; i++) { + if (i < 8) { + unsigned primes[8] = { 2, 3, 5, 7, 11, 13, 17, 19 }; + + if (!BN_set_word(p, primes[i])) + goto err; + } else { + if (!BN_set_word(a, 32)) + goto err; + if (!BN_set_word(r, 2 * i + 1)) + goto err; + + if (!BN_generate_prime_ex(p, 256, 0, a, r, &cb)) + goto err; + putc('\n', stderr); + } + p->neg = rand_neg(); + + for (j = 0; j < num2; j++) { + /* + * construct 'a' such that it is a square modulo p, but in + * general not a proper square and not reduced modulo p + */ + if (!BN_bntest_rand(r, 256, 0, 3)) + goto err; + if (!BN_nnmod(r, r, p, ctx)) + goto err; + if (!BN_mod_sqr(r, r, p, ctx)) + goto err; + if (!BN_bntest_rand(a, 256, 0, 3)) + goto err; + if (!BN_nnmod(a, a, p, ctx)) + goto err; + if (!BN_mod_sqr(a, a, p, ctx)) + goto err; + if (!BN_mul(a, a, r, ctx)) + goto err; + if (rand_neg()) + if (!BN_sub(a, a, p)) + goto err; + + if (!BN_mod_sqrt(r, a, p, ctx)) + goto err; + if (!BN_mod_sqr(r, r, p, ctx)) + goto err; + + if (!BN_nnmod(a, a, p, ctx)) + goto err; + + if (BN_cmp(a, r) != 0) { + fprintf(stderr, "BN_mod_sqrt failed: a = "); + BN_print_fp(stderr, a); + fprintf(stderr, ", r = "); + BN_print_fp(stderr, r); + fprintf(stderr, ", p = "); + BN_print_fp(stderr, p); + fprintf(stderr, "\n"); + goto err; + } + + putc('.', stderr); + fflush(stderr); + } + + putc('\n', stderr); + fflush(stderr); + } + ret = 1; + err: + if (a != NULL) + BN_free(a); + if (p != NULL) + BN_free(p); + if (r != NULL) + BN_free(r); + return ret; +} + +int test_lshift(BIO *bp, BN_CTX *ctx, BIGNUM *a_) +{ + BIGNUM *a, *b, *c, *d; + int i; + + b = BN_new(); + c = BN_new(); + d = BN_new(); + BN_one(c); + + if (a_) + a = a_; + else { + a = BN_new(); + BN_bntest_rand(a, 200, 0, 0); + a->neg = rand_neg(); + } + for (i = 0; i < num0; i++) { + BN_lshift(b, a, i + 1); + BN_add(c, c, c); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * "); + BN_print(bp, c); + BIO_puts(bp, " - "); + } + BN_print(bp, b); + BIO_puts(bp, "\n"); + } + BN_mul(d, a, c, ctx); + BN_sub(d, d, b); + if (!BN_is_zero(d)) { + fprintf(stderr, "Left shift test failed!\n"); + fprintf(stderr, "a="); + BN_print_fp(stderr, a); + fprintf(stderr, "\nb="); + BN_print_fp(stderr, b); + fprintf(stderr, "\nc="); + BN_print_fp(stderr, c); + fprintf(stderr, "\nd="); + BN_print_fp(stderr, d); + fprintf(stderr, "\n"); + return 0; + } + } + BN_free(a); + BN_free(b); + BN_free(c); + BN_free(d); + return (1); +} + +int test_lshift1(BIO *bp) +{ + BIGNUM *a, *b, *c; + int i; + + a = BN_new(); + b = BN_new(); + c = BN_new(); + + BN_bntest_rand(a, 200, 0, 0); + a->neg = rand_neg(); + for (i = 0; i < num0; i++) { + BN_lshift1(b, a); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " * 2"); + BIO_puts(bp, " - "); + } + BN_print(bp, b); + BIO_puts(bp, "\n"); + } + BN_add(c, a, a); + BN_sub(a, b, c); + if (!BN_is_zero(a)) { + fprintf(stderr, "Left shift one test failed!\n"); + return 0; + } + + BN_copy(a, b); + } + BN_free(a); + BN_free(b); + BN_free(c); + return (1); +} + +int test_rshift(BIO *bp, BN_CTX *ctx) +{ + BIGNUM *a, *b, *c, *d, *e; + int i; + + a = BN_new(); + b = BN_new(); + c = BN_new(); + d = BN_new(); + e = BN_new(); + BN_one(c); + + BN_bntest_rand(a, 200, 0, 0); + a->neg = rand_neg(); + for (i = 0; i < num0; i++) { + BN_rshift(b, a, i + 1); + BN_add(c, c, c); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " / "); + BN_print(bp, c); + BIO_puts(bp, " - "); + } + BN_print(bp, b); + BIO_puts(bp, "\n"); + } + BN_div(d, e, a, c, ctx); + BN_sub(d, d, b); + if (!BN_is_zero(d)) { + fprintf(stderr, "Right shift test failed!\n"); + return 0; + } + } + BN_free(a); + BN_free(b); + BN_free(c); + BN_free(d); + BN_free(e); + return (1); +} + +int test_rshift1(BIO *bp) +{ + BIGNUM *a, *b, *c; + int i; + + a = BN_new(); + b = BN_new(); + c = BN_new(); + + BN_bntest_rand(a, 200, 0, 0); + a->neg = rand_neg(); + for (i = 0; i < num0; i++) { + BN_rshift1(b, a); + if (bp != NULL) { + if (!results) { + BN_print(bp, a); + BIO_puts(bp, " / 2"); + BIO_puts(bp, " - "); + } + BN_print(bp, b); + BIO_puts(bp, "\n"); + } + BN_sub(c, a, b); + BN_sub(c, c, b); + if (!BN_is_zero(c) && !BN_abs_is_word(c, 1)) { + fprintf(stderr, "Right shift one test failed!\n"); + return 0; + } + BN_copy(a, b); + } + BN_free(a); + BN_free(b); + BN_free(c); + return (1); +} + +int rand_neg(void) +{ + static unsigned int neg = 0; + static int sign[8] = { 0, 0, 0, 1, 1, 0, 1, 1 }; + + return (sign[(neg++) % 8]); +}