randtest.c

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/* crypto/rand/randtest.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([email protected]).
 * 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 ([email protected]).
 * 
 * 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 ([email protected])"
 *    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 ([email protected])"
 * 
 * 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 <openssl/rand.h>

#include "../e_os.h"

/* some FIPS 140-1 random number test */
/* some simple tests */

int main(int argc,char **argv)
    {
    unsigned char buf[2500];
    int i,j,k,s,sign,nsign,err=0;
    unsigned long n1;
    unsigned long n2[16];
    unsigned long runs[2][34];
    /*double d; */
    long d;

    i = RAND_pseudo_bytes(buf,2500);
    if (i < 0)
        {
        printf ("init failed, the rand method is not properly installed\n");
        err++;
        goto err;
        }

    n1=0;
    for (i=0; i<16; i++) n2[i]=0;
    for (i=0; i<34; i++) runs[0][i]=runs[1][i]=0;

    /* test 1 and 2 */
    sign=0;
    nsign=0;
    for (i=0; i<2500; i++)
        {
        j=buf[i];

        n2[j&0x0f]++;
        n2[(j>>4)&0x0f]++;

        for (k=0; k<8; k++)
            {
            s=(j&0x01);
            if (s == sign)
                nsign++;
            else
                {
                if (nsign > 34) nsign=34;
                if (nsign != 0)
                    {
                    runs[sign][nsign-1]++;
                    if (nsign > 6)
                        runs[sign][5]++;
                    }
                sign=s;
                nsign=1;
                }

            if (s) n1++;
            j>>=1;
            }
        }
        if (nsign > 34) nsign=34;
        if (nsign != 0) runs[sign][nsign-1]++;

    /* test 1 */
    if (!((9654 < n1) && (n1 < 10346)))
        {
        printf("test 1 failed, X=%lu\n",n1);
        err++;
        }
    printf("test 1 done\n");

    /* test 2 */
#ifdef undef
    d=0;
    for (i=0; i<16; i++)
        d+=n2[i]*n2[i];
    d=d*16.0/5000.0-5000.0;
    if (!((1.03 < d) && (d < 57.4)))
        {
        printf("test 2 failed, X=%.2f\n",d);
        err++;
        }
#endif
    d=0;
    for (i=0; i<16; i++)
        d+=n2[i]*n2[i];
    d=(d*8)/25-500000;
    if (!((103 < d) && (d < 5740)))
        {
        printf("test 2 failed, X=%ld.%02ld\n",d/100L,d%100L);
        err++;
        }
    printf("test 2 done\n");

    /* test 3 */
    for (i=0; i<2; i++)
        {
        if (!((2267 < runs[i][0]) && (runs[i][0] < 2733)))
            {
            printf("test 3 failed, bit=%d run=%d num=%lu\n",
                i,1,runs[i][0]);
            err++;
            }
        if (!((1079 < runs[i][1]) && (runs[i][1] < 1421)))
            {
            printf("test 3 failed, bit=%d run=%d num=%lu\n",
                i,2,runs[i][1]);
            err++;
            }
        if (!(( 502 < runs[i][2]) && (runs[i][2] <  748)))
            {
            printf("test 3 failed, bit=%d run=%d num=%lu\n",
                i,3,runs[i][2]);
            err++;
            }
        if (!(( 223 < runs[i][3]) && (runs[i][3] <  402)))
            {
            printf("test 3 failed, bit=%d run=%d num=%lu\n",
                i,4,runs[i][3]);
            err++;
            }
        if (!((  90 < runs[i][4]) && (runs[i][4] <  223)))
            {
            printf("test 3 failed, bit=%d run=%d num=%lu\n",
                i,5,runs[i][4]);
            err++;
            }
        if (!((  90 < runs[i][5]) && (runs[i][5] <  223)))
            {
            printf("test 3 failed, bit=%d run=%d num=%lu\n",
                i,6,runs[i][5]);
            err++;
            }
        }
    printf("test 3 done\n");
    
    /* test 4 */
    if (runs[0][33] != 0)
        {
        printf("test 4 failed, bit=%d run=%d num=%lu\n",
            0,34,runs[0][33]);
        err++;
        }
    if (runs[1][33] != 0)
        {
        printf("test 4 failed, bit=%d run=%d num=%lu\n",
            1,34,runs[1][33]);
        err++;
        }
    printf("test 4 done\n");
 err:
    err=((err)?1:0);
#ifdef OPENSSL_SYS_NETWARE
    if (err) printf("ERROR: %d\n", err);
#endif
    EXIT(err);
    return(err);
    }