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openssl/crypto/bn/bntest.c
Ulf Möller 98486a9310 improved bignum test as in 0.9.7. 
We need this to find out if the bignum failures on Irix and Alpha are
caused by new 0.9.7 code or just aren't triggered in the 0.9.6 test suite.
2001-02-27 23:00:42 +00:00

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/* crypto/bn/bntest.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* 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:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* 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
* 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
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* 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.]
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "openssl/e_os.h"
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/err.h>
#ifdef WINDOWS
#include "../bio/bss_file.c"
#endif
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_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_exp(BIO *bp,BN_CTX *ctx);
int rand_neg(void);
static int results=0;
#ifdef NO_STDIO
#define APPS_WIN16
#include "bss_file.c"
#endif
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;
BIO_flush(out);
message(out,"BN_sub");
if (!test_sub(out)) goto err;
BIO_flush(out);
message(out,"BN_lshift1");
if (!test_lshift1(out)) goto err;
BIO_flush(out);
message(out,"BN_lshift (fixed)");
if (!test_lshift(out,ctx,BN_bin2bn(lst,sizeof(lst)-1,NULL)))
goto err;
BIO_flush(out);
message(out,"BN_lshift");
if (!test_lshift(out,ctx,NULL)) goto err;
BIO_flush(out);
message(out,"BN_rshift1");
if (!test_rshift1(out)) goto err;
BIO_flush(out);
message(out,"BN_rshift");
if (!test_rshift(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_sqr");
if (!test_sqr(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_mul");
if (!test_mul(out)) goto err;
BIO_flush(out);
message(out,"BN_div");
if (!test_div(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_div_recp");
if (!test_div_recp(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_mod");
if (!test_mod(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_mod_mul");
if (!test_mod_mul(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_mont");
if (!test_mont(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_mod_exp");
if (!test_mod_exp(out,ctx)) goto err;
BIO_flush(out);
message(out,"BN_exp");
if (!test_exp(out,ctx)) goto err;
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*/
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;
int j;
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();
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");
}
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;
int j;
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();
}
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_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;
int j;
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();
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_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);
}
int test_div_recp(BIO *bp, BN_CTX *ctx)
{
BIGNUM a,b,c,d,e;
BN_RECP_CTX recp;
int i;
int j;
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);
if (bp == NULL)
for (j=0; j<100; j++)
BN_div_recp(&d,&c,&a,&recp,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;
int j;
BN_CTX ctx;
BN_CTX_init(&ctx);
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();
if (bp == NULL)
for (j=0; j<100; j++)
BN_mul(&c,&a,&b,&ctx);
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;
int j;
BN_init(&a);
BN_init(&c);
BN_init(&d);
BN_init(&e);
for (i=0; i<num0; i++)
{
BN_bntest_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_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");
return 0;
}
}
BN_free(&a);
BN_free(&c);
BN_free(&d);
BN_free(&e);
return(1);
}
int test_mont(BIO *bp, BN_CTX *ctx)
{
BIGNUM a,b,c,d,A,B;
BIGNUM n;
int i;
int j;
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_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)
{
#ifdef undef
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;
int j;
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();
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_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;
a=BN_new();
b=BN_new();
c=BN_new();
d=BN_new();
e=BN_new();
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 (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_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");
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(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))
return(00);
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_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_is_one(c))
{
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]);
}
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