text: /* t_spki.c */
  /*
   * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   * 1999.
   */
  /* ====================================================================
   * Copyright (c) 1999 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 "cryptlib.h"
  #include <openssl/x509.h>
  #include <openssl/asn1.h>
  #ifndef OPENSSL_NO_RSA
  # include <openssl/rsa.h>
  #endif
  #ifndef OPENSSL_NO_DSA
  # include <openssl/dsa.h>
  #endif
  #include <openssl/bn.h>
  
  /* Print out an SPKI */
  
  int NETSCAPE_SPKI_print(BIO *out, NETSCAPE_SPKI *spki)
  {
      EVP_PKEY *pkey;
      ASN1_IA5STRING *chal;
      int i, n;
      char *s;
      BIO_printf(out, "Netscape SPKI:\n");
      i = OBJ_obj2nid(spki->spkac->pubkey->algor->algorithm);
      BIO_printf(out, "  Public Key Algorithm: %s\n",
                 (i == NID_undef) ? "UNKNOWN" : OBJ_nid2ln(i));
      pkey = X509_PUBKEY_get(spki->spkac->pubkey);
      if (!pkey)
          BIO_printf(out, "  Unable to load public key\n");
      else {
          EVP_PKEY_print_public(out, pkey, 4, NULL);
          EVP_PKEY_free(pkey);
      }
      chal = spki->spkac->challenge;
      if (chal->length)
          BIO_printf(out, "  Challenge String: %s\n", chal->data);
      i = OBJ_obj2nid(spki->sig_algor->algorithm);
      BIO_printf(out, "  Signature Algorithm: %s",
                 (i == NID_undef) ? "UNKNOWN" : OBJ_nid2ln(i));
  
      n = spki->signature->length;
      s = (char *)spki->signature->data;
      for (i = 0; i < n; i++) {
          if ((i % 18) == 0)
              BIO_write(out, "\n      ", 7);
          BIO_printf(out, "%02x%s", (unsigned char)s[i],
                     ((i + 1) == n) ? "" : ":");
      }
      BIO_write(out, "\n", 1);
      return 1;
  }
  