/* fips_rsagtest.c */
/*
 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
 * 2005.
 */
/* ====================================================================
 * Copyright (c) 2005,2007 The OpenSSL Project.  All rights reserved.
 *
 * 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 above 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 acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <openssl/err.h>
#include <openssl/bn.h>
#include <openssl/x509v3.h>

#ifndef OPENSSL_FIPS

int main(int argc, char *argv[])
{
    printf("No FIPS RSA support\n");
    return (0);
}

#else

# include <openssl/rsa.h>
# include "fips_utl.h"

int rsa_test(FILE *out, FILE *in);
static int rsa_printkey1(FILE *out, RSA *rsa,
                         BIGNUM *Xp1, BIGNUM *Xp2, BIGNUM *Xp, BIGNUM *e);
static int rsa_printkey2(FILE *out, RSA *rsa,
                         BIGNUM *Xq1, BIGNUM *Xq2, BIGNUM *Xq);

int main(int argc, char **argv)
{
    FILE *in = NULL, *out = NULL;

    int ret = 1;

    if (!FIPS_mode_set(1)) {
        do_print_errors();
        goto end;
    }

    if (argc == 1)
        in = stdin;
    else
        in = fopen(argv[1], "r");

    if (argc < 2)
        out = stdout;
    else
        out = fopen(argv[2], "w");

    if (!in) {
        fprintf(stderr, "FATAL input initialization error\n");
        goto end;
    }

    if (!out) {
        fprintf(stderr, "FATAL output initialization error\n");
        goto end;
    }

    if (!rsa_test(out, in)) {
        fprintf(stderr, "FATAL RSAGTEST file processing error\n");
        goto end;
    } else
        ret = 0;

 end:

    if (ret)
        do_print_errors();

    if (in && (in != stdin))
        fclose(in);
    if (out && (out != stdout))
        fclose(out);

    return ret;

}

# define RSA_TEST_MAXLINELEN     10240

int rsa_test(FILE *out, FILE *in)
{
    char *linebuf, *olinebuf, *p, *q;
    char *keyword, *value;
    RSA *rsa = NULL;
    BIGNUM *Xp1 = NULL, *Xp2 = NULL, *Xp = NULL;
    BIGNUM *Xq1 = NULL, *Xq2 = NULL, *Xq = NULL;
    BIGNUM *e = NULL;
    int ret = 0;
    int lnum = 0;

    olinebuf = OPENSSL_malloc(RSA_TEST_MAXLINELEN);
    linebuf = OPENSSL_malloc(RSA_TEST_MAXLINELEN);

    if (!linebuf || !olinebuf)
        goto error;

    while (fgets(olinebuf, RSA_TEST_MAXLINELEN, in)) {
        lnum++;
        strcpy(linebuf, olinebuf);
        keyword = linebuf;
        /* Skip leading space */
        while (isspace((unsigned char)*keyword))
            keyword++;

        /* Look for = sign */
        p = strchr(linebuf, '=');

        /*
         * If no = or starts with [ (for [foo = bar] line) just copy
         */
        if (!p || *keyword == '[') {
            if (fputs(olinebuf, out) < 0)
                goto error;
            continue;
        }

        q = p - 1;

        /* Remove trailing space */
        while (isspace((unsigned char)*q))
            *q-- = 0;

        *p = 0;
        value = p + 1;

        /* Remove leading space from value */
        while (isspace((unsigned char)*value))
            value++;

        /* Remove trailing space from value */
        p = value + strlen(value) - 1;

        while (*p == '\n' || isspace((unsigned char)*p))
            *p-- = 0;

        if (!strcmp(keyword, "xp1")) {
            if (Xp1 || !do_hex2bn(&Xp1, value))
                goto parse_error;
        } else if (!strcmp(keyword, "xp2")) {
            if (Xp2 || !do_hex2bn(&Xp2, value))
                goto parse_error;
        } else if (!strcmp(keyword, "Xp")) {
            if (Xp || !do_hex2bn(&Xp, value))
                goto parse_error;
        } else if (!strcmp(keyword, "xq1")) {
            if (Xq1 || !do_hex2bn(&Xq1, value))
                goto parse_error;
        } else if (!strcmp(keyword, "xq2")) {
            if (Xq2 || !do_hex2bn(&Xq2, value))
                goto parse_error;
        } else if (!strcmp(keyword, "Xq")) {
            if (Xq || !do_hex2bn(&Xq, value))
                goto parse_error;
        } else if (!strcmp(keyword, "e")) {
            if (e || !do_hex2bn(&e, value))
                goto parse_error;
        } else if (!strcmp(keyword, "p1"))
            continue;
        else if (!strcmp(keyword, "p2"))
            continue;
        else if (!strcmp(keyword, "p"))
            continue;
        else if (!strcmp(keyword, "q1"))
            continue;
        else if (!strcmp(keyword, "q2"))
            continue;
        else if (!strcmp(keyword, "q"))
            continue;
        else if (!strcmp(keyword, "n"))
            continue;
        else if (!strcmp(keyword, "d"))
            continue;
        else
            goto parse_error;

        fputs(olinebuf, out);

        if (e && Xp1 && Xp2 && Xp) {
            rsa = FIPS_rsa_new();
            if (!rsa)
                goto error;
            if (!rsa_printkey1(out, rsa, Xp1, Xp2, Xp, e))
                goto error;
            BN_free(Xp1);
            Xp1 = NULL;
            BN_free(Xp2);
            Xp2 = NULL;
            BN_free(Xp);
            Xp = NULL;
            BN_free(e);
            e = NULL;
        }

        if (rsa && Xq1 && Xq2 && Xq) {
            if (!rsa_printkey2(out, rsa, Xq1, Xq2, Xq))
                goto error;
            BN_free(Xq1);
            Xq1 = NULL;
            BN_free(Xq2);
            Xq2 = NULL;
            BN_free(Xq);
            Xq = NULL;
            FIPS_rsa_free(rsa);
            rsa = NULL;
        }
    }

    ret = 1;

 error:

    if (olinebuf)
        OPENSSL_free(olinebuf);
    if (linebuf)
        OPENSSL_free(linebuf);

    if (Xp1)
        BN_free(Xp1);
    if (Xp2)
        BN_free(Xp2);
    if (Xp)
        BN_free(Xp);
    if (Xq1)
        BN_free(Xq1);
    if (Xq1)
        BN_free(Xq1);
    if (Xq2)
        BN_free(Xq2);
    if (Xq)
        BN_free(Xq);
    if (e)
        BN_free(e);
    if (rsa)
        FIPS_rsa_free(rsa);

    return ret;

 parse_error:

    fprintf(stderr, "FATAL parse error processing line %d\n", lnum);

    goto error;

}

static int rsa_printkey1(FILE *out, RSA *rsa,
                         BIGNUM *Xp1, BIGNUM *Xp2, BIGNUM *Xp, BIGNUM *e)
{
    int ret = 0;
    BIGNUM *p1 = NULL, *p2 = NULL;
    p1 = BN_new();
    p2 = BN_new();
    if (!p1 || !p2)
        goto error;

    if (!RSA_X931_derive_ex(rsa, p1, p2, NULL, NULL, Xp1, Xp2, Xp,
                            NULL, NULL, NULL, e, NULL))
        goto error;

    do_bn_print_name(out, "p1", p1);
    do_bn_print_name(out, "p2", p2);
    do_bn_print_name(out, "p", rsa->p);

    ret = 1;

 error:
    if (p1)
        BN_free(p1);
    if (p2)
        BN_free(p2);

    return ret;
}

static int rsa_printkey2(FILE *out, RSA *rsa,
                         BIGNUM *Xq1, BIGNUM *Xq2, BIGNUM *Xq)
{
    int ret = 0;
    BIGNUM *q1 = NULL, *q2 = NULL;
    q1 = BN_new();
    q2 = BN_new();
    if (!q1 || !q2)
        goto error;

    if (!RSA_X931_derive_ex(rsa, NULL, NULL, q1, q2, NULL, NULL, NULL,
                            Xq1, Xq2, Xq, NULL, NULL))
        goto error;

    do_bn_print_name(out, "q1", q1);
    do_bn_print_name(out, "q2", q2);
    do_bn_print_name(out, "q", rsa->q);
    do_bn_print_name(out, "n", rsa->n);
    do_bn_print_name(out, "d", rsa->d);

    ret = 1;

 error:
    if (q1)
        BN_free(q1);
    if (q2)
        BN_free(q2);

    return ret;
}

#endif
