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fips_rsastest.c

/* fips_rsastest.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 2005.
 */
/* ====================================================================
 * Copyright (c) 2005 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"

static int rsa_stest(FILE *out, FILE *in, int Saltlen);
static int rsa_printsig(FILE *out, RSA *rsa, const EVP_MD *dgst,
            unsigned char *Msg, long Msglen, int Saltlen);

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

      int ret = 1, Saltlen = -1;

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

      if ((argc > 2) && !strcmp("-saltlen", argv[1]))
            {
            Saltlen = atoi(argv[2]);
            if (Saltlen < 0)
                  {
                  fprintf(stderr, "FATAL: Invalid salt length\n");
                  goto end;
                  }
            argc -= 2;
            argv += 2;
            }
      else if ((argc > 1) && !strcmp("-x931", argv[1]))
            {
            Saltlen = -2;
            argc--;
            argv++;
            }

      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_stest(out, in, Saltlen))
            {
            fprintf(stderr, "FATAL RSASTEST 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_stest(FILE *out, FILE *in, int Saltlen)
      {
      char *linebuf, *olinebuf, *p, *q;
      char *keyword, *value;
      RSA *rsa = NULL;
      const EVP_MD *dgst = NULL;
      unsigned char *Msg = NULL;
      long Msglen = -1;
      int keylen = -1, current_keylen = -1;
      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 = just copy */
            if (!p)
                  {
                  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;

            /* Look for [mod = XXX] for key length */

            if (!strcmp(keyword, "[mod"))
                  {
                  p = value + strlen(value) - 1;
                  if (*p != ']')
                        goto parse_error;
                  *p = 0;
                  keylen = atoi(value);
                  if (keylen < 0)
                        goto parse_error;
                  }
            else if (!strcmp(keyword, "SHAAlg"))
                  {
                  if (!strcmp(value, "SHA1"))
                        dgst = EVP_sha1();
                  else if (!strcmp(value, "SHA224"))
                        dgst = EVP_sha224();
                  else if (!strcmp(value, "SHA256"))
                        dgst = EVP_sha256();
                  else if (!strcmp(value, "SHA384"))
                        dgst = EVP_sha384();
                  else if (!strcmp(value, "SHA512"))
                        dgst = EVP_sha512();
                  else
                        {
                        fprintf(stderr,
                              "FATAL: unsupported algorithm \"%s\"\n",
                                                value);
                        goto parse_error;
                        }
                  }
            else if (!strcmp(keyword, "Msg"))
                  {
                  if (Msg)
                        goto parse_error;
                  if (strlen(value) & 1)
                        *(--value) = '0';
                  Msg = hex2bin_m(value, &Msglen);
                  if (!Msg)
                        goto parse_error;
                  }

            fputs(olinebuf, out);

            /* If key length has changed, generate and output public
             * key components of new RSA private key.
             */

            if (keylen != current_keylen)
                  {
                  BIGNUM *bn_e;
                  if (rsa)
                        FIPS_rsa_free(rsa);
                  rsa = FIPS_rsa_new();
                  if (!rsa)
                        goto error;
                  bn_e = BN_new();
                  if (!bn_e || !BN_set_word(bn_e, 0x1001))
                        goto error;
                  if (!RSA_X931_generate_key_ex(rsa, keylen, bn_e, NULL))
                        goto error;
                  BN_free(bn_e);
                  fputs("n = ", out);
                  do_bn_print(out, rsa->n);
                  fputs("\ne = ", out);
                  do_bn_print(out, rsa->e);
                  fputs("\n", out);
                  current_keylen = keylen;
                  }

            if (Msg && dgst)
                  {
                  if (!rsa_printsig(out, rsa, dgst, Msg, Msglen,
                                                Saltlen))
                        goto error;
                  OPENSSL_free(Msg);
                  Msg = NULL;
                  }

            }

      ret = 1;

      error:

      if (olinebuf)
            OPENSSL_free(olinebuf);
      if (linebuf)
            OPENSSL_free(linebuf);
      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_printsig(FILE *out, RSA *rsa, const EVP_MD *dgst,
            unsigned char *Msg, long Msglen, int Saltlen)
      {
      int ret = 0;
      unsigned char *sigbuf = NULL;
      int i, siglen;
      /* EVP_PKEY structure */
      EVP_PKEY pk;
      EVP_MD_CTX ctx;
      pk.type = EVP_PKEY_RSA;
      pk.pkey.rsa = rsa;

      siglen = RSA_size(rsa);
      sigbuf = OPENSSL_malloc(siglen);
      if (!sigbuf)
            goto error;

      EVP_MD_CTX_init(&ctx);

      if (Saltlen >= 0)
            {
            M_EVP_MD_CTX_set_flags(&ctx,
                  EVP_MD_CTX_FLAG_PAD_PSS | (Saltlen << 16));
            }
      else if (Saltlen == -2)
            M_EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_PAD_X931);
      if (!EVP_SignInit_ex(&ctx, dgst, NULL))
            goto error;
      if (!EVP_SignUpdate(&ctx, Msg, Msglen))
            goto error;
      if (!EVP_SignFinal(&ctx, sigbuf, (unsigned int *)&siglen, &pk))
            goto error;

      EVP_MD_CTX_cleanup(&ctx);

      fputs("S = ", out);

      for (i = 0; i < siglen; i++)
            fprintf(out, "%02X", sigbuf[i]);

      fputs("\n", out);

      ret = 1;

      error:

      return ret;
      }
#endif

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