test/test_big_consistency_XXX.c.in

/*
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    or more contributor license agreements.  See the NOTICE file
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    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
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    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing,
    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.
*/
/**
 * @file test_big_consistency.c
 * @author Alessandro Budroni
 * @brief Test for consistency with BIG_XXX
 *
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "arch.h"
#include "amcl.h"
#include "utils.h"
#include "big_XXX.h"

int main()
{

    int i,j;
    char raw[256], bytes[MODBYTES_XXX];
    csprng rng;

    BIG_XXX F,G,H,I,Z;
    DBIG_XXX DF,DG;

    /* Fake random source */
    RAND_clean(&rng);
    for (i=0; i<256; i++) raw[i]=(char)i;
    RAND_seed(&rng,256,raw);

    /* Set to zero */
    BIG_XXX_zero(F);
    BIG_XXX_zero(G);
    BIG_XXX_dzero(DF);
    BIG_XXX_dzero(DG);

    /* Testing equal function and set zero function */
    if(BIG_XXX_comp(G,F) | !BIG_XXX_iszilch(F) | !BIG_XXX_iszilch(G) | BIG_XXX_dcomp(DG,DF) | !BIG_XXX_diszilch(DF) | !BIG_XXX_diszilch(DG))
    {
        printf("ERROR comparing or setting zero BIG_XXX\n");
        exit(EXIT_FAILURE);
    }

    /* Testing copying and equal function */
    BIG_XXX_random(F,&rng);
    BIG_XXX_random(DF,&rng);
    BIG_XXX_copy(G,F);
    BIG_XXX_dcopy(DG,DF);
    if(BIG_XXX_comp(G,F) | BIG_XXX_dcomp(DG,DF))
    {
        printf("ERROR testing copying and equal BIG_XXX\n");
        exit(EXIT_FAILURE);
    }

    /* Testing addition, subtraction */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(F,&rng);
        BIG_XXX_random(H,&rng);
        BIG_XXX_copy(G,F);
        BIG_XXX_add(G,G,H);
        BIG_XXX_sub(G,G,H);
        BIG_XXX_sub(H,H,H);
        if(BIG_XXX_comp(G,F) | !BIG_XXX_iszilch(H))
        {
            printf("ERROR testing addition/subtraction BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }
    BIG_XXX_one(I);
    BIG_XXX_zero(Z);
    BIG_XXX_zero(F);
    BIG_XXX_add(F,F,F);
    BIG_XXX_add(Z,I,Z);
    if(BIG_XXX_comp(Z,I) | !BIG_XXX_iszilch(F))
    {
        printf("ERROR testing addition/subtraction BIG_XXX\n");
        exit(EXIT_FAILURE);
    }

    /* Testing small multiplication and division by 3 */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(F,&rng);
        BIG_XXX_copy(G,F);
        BIG_XXX_imul(G,G,3);
        BIG_XXX_div3(G);
        if(BIG_XXX_comp(G,F))
        {
            printf("ERROR testing small multiplication and division by 3 BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    /* Testing small multiplication and addition */
    BIG_XXX_random(F,&rng);
    for (j = 1; j <= NEXCESS_XXX; ++j)
    {
        BIG_XXX_imul(H,F,j);
        BIG_XXX_copy(G,F);
        for (i = 1; i < j; ++i)
        {
            BIG_XXX_add(G,G,F);
        }
        BIG_XXX_norm(G);
        BIG_XXX_norm(H);
        if(BIG_XXX_comp(H,G) != 0)
        {
            printf("ERROR testing small multiplication and addition BIG_XXX, %d\n",j);
            exit(EXIT_FAILURE);
        }
    }

    /* Testing square */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(F,&rng);
        BIG_XXX_copy(G,F);
        BIG_XXX_sqr(DG,G);
        BIG_XXX_mul(DF,F,F);
        if(BIG_XXX_dcomp(DG,DF))
        {
            printf("ERROR testing square BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    /* Testing square mod */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(H,&rng);
        BIG_XXX_randomnum(F,H,&rng);
        BIG_XXX_copy(G,F);
        BIG_XXX_modsqr(G,G,H);
        BIG_XXX_sqr(DF,F);
        BIG_XXX_dmod(F,DF,H);
        if(BIG_XXX_comp(G,F))
        {
            printf("ERROR testing mod square BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    /* Testing from and to bytes conversion */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(F,&rng);
        BIG_XXX_copy(G,F);
        BIG_XXX_toBytes(bytes,G);
        BIG_XXX_fromBytes(G,bytes);
        if(BIG_XXX_comp(G,F))
        {
            printf("ERROR testing from and to bytes conversion BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }
    BIG_XXX_toBytes(bytes,G);
    BIG_XXX_fromBytesLen(G,bytes,MODBYTES_XXX);
    if(BIG_XXX_comp(G,F))
    {
        printf("ERROR testing from and to bytes conversion BIG_XXX\n");
        exit(EXIT_FAILURE);
    }

    /* Testing small increment and decrement */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(F,&rng);
        BIG_XXX_copy(G,F);
        BIG_XXX_inc(G,i);
        BIG_XXX_dec(G,i);
        if(BIG_XXX_comp(G,F))
        {
            printf("ERROR testing small increment and decrement BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    /* Testing small increment and decrement */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(F,&rng);
        BIG_XXX_copy(G,F);
        if(BIG_XXX_comp(G,F))
        {
            printf("ERROR testing small increment and decrement BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    /* Testing random with modulo */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(G,&rng);
        BIG_XXX_randomnum(F,G,&rng);
        if(BIG_XXX_comp(F,G)>0)
        {
            printf("ERROR testing random with modulo BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    /* Testing mod neg */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(H,&rng);
        BIG_XXX_randomnum(F,H,&rng);
        BIG_XXX_modneg(G,F,H);
        BIG_XXX_modneg(G,G,H);
        BIG_XXX_norm(G);
        BIG_XXX_norm(F);
        if(BIG_XXX_comp(F,G))
        {
            printf("ERROR testing mod neg BIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    /* Testing copy from/to BIG_XXX/DBIG_XXX */
    for (i=0; i<100; i++)
    {
        BIG_XXX_random(F,&rng);
        BIG_XXX_copy(G,F);
        BIG_XXX_dzero(DF);
        BIG_XXX_dsucopy(DF,F);
        BIG_XXX_sducopy(F,DF);
        if(BIG_XXX_comp(F,G))
        {
            printf("ERROR testing copy from/to BIG_XXX/DBIG_XXX\n");
            exit(EXIT_FAILURE);
        }
    }

    printf("SUCCESS TEST CONSISTENCY OF BIG_XXX PASSED\n");
    exit(EXIT_SUCCESS);
}