demos/selfsign.c

   1 /* NOCW */
   2 /* cc -o ssdemo -I../include selfsign.c ../libcrypto.a */
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 #include <openssl/pem.h>
   8 #include <openssl/conf.h>
   9 #include <openssl/x509v3.h>
  10
  11 int mkit(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
  12
  13 int main()
  14 {
  15     BIO *bio_err;
  16     X509 *x509 = NULL;
  17     EVP_PKEY *pkey = NULL;
  18
  19     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
  20
  21     bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
  22
  23     mkit(&x509, &pkey, 512, 0, 365);
  24
  25     RSA_print_fp(stdout, pkey->pkey.rsa, 0);
  26     X509_print_fp(stdout, x509);
  27
  28     PEM_write_PrivateKey(stdout, pkey, NULL, NULL, 0, NULL, NULL);
  29     PEM_write_X509(stdout, x509);
  30
  31     X509_free(x509);
  32     EVP_PKEY_free(pkey);
  33
  34 #ifdef CUSTOM_EXT
  35     /* Only needed if we add objects or custom extensions */
  36     X509V3_EXT_cleanup();
  37     OBJ_cleanup();
  38 #endif
  39
  40     CRYPTO_mem_leaks(bio_err);
  41     BIO_free(bio_err);
  42     return (0);
  43 }
  44
  45 #ifdef WIN16
  46 # define MS_CALLBACK   _far _loadds
  47 # define MS_FAR        _far
  48 #else
  49 # define MS_CALLBACK
  50 # define MS_FAR
  51 #endif
  52
  53 static void MS_CALLBACK callback(p, n, arg)
  54 int p;
  55 int n;
  56 void *arg;
  57 {
  58     char c = 'B';
  59
  60     if (p == 0)
  61         c = '.';
  62     if (p == 1)
  63         c = '+';
  64     if (p == 2)
  65         c = '*';
  66     if (p == 3)
  67         c = '\n';
  68     fputc(c, stderr);
  69 }
  70
  71 int mkit(x509p, pkeyp, bits, serial, days)
  72 X509 **x509p;
  73 EVP_PKEY **pkeyp;
  74 int bits;
  75 int serial;
  76 int days;
  77 {
  78     X509 *x;
  79     EVP_PKEY *pk;
  80     RSA *rsa;
  81     X509_NAME *name = NULL;
  82     X509_NAME_ENTRY *ne = NULL;
  83     X509_EXTENSION *ex = NULL;
  84
  85     if ((pkeyp == NULL) || (*pkeyp == NULL)) {
  86         if ((pk = EVP_PKEY_new()) == NULL) {
  87             abort();
  88             return (0);
  89         }
  90     } else
  91         pk = *pkeyp;
  92
  93     if ((x509p == NULL) || (*x509p == NULL)) {
  94         if ((x = X509_new()) == NULL)
  95             goto err;
  96     } else
  97         x = *x509p;
  98
  99     rsa = RSA_generate_key(bits, RSA_F4, callback, NULL);
 100     if (!EVP_PKEY_assign_RSA(pk, rsa)) {
 101         abort();
 102         goto err;
 103     }
 104     rsa = NULL;
 105
 106     X509_set_version(x, 3);
 107     ASN1_INTEGER_set(X509_get_serialNumber(x), serial);
 108     X509_gmtime_adj(X509_get_notBefore(x), 0);
 109     X509_gmtime_adj(X509_get_notAfter(x), (long)60 * 60 * 24 * days);
 110     X509_set_pubkey(x, pk);
 111
 112     name = X509_get_subject_name(x);
 113
 114     /*
 115      * This function creates and adds the entry, working out the correct
 116      * string type and performing checks on its length. Normally we'd check
 117      * the return value for errors...
 118      */
 119     X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC, "UK", -1, -1, 0);
 120     X509_NAME_add_entry_by_txt(name, "CN",
 121                                MBSTRING_ASC, "OpenSSL Group", -1, -1, 0);
 122
 123     X509_set_issuer_name(x, name);
 124
 125     /*
 126      * Add extension using V3 code: we can set the config file as NULL
 127      * because we wont reference any other sections. We can also set the
 128      * context to NULL because none of these extensions below will need to
 129      * access it.
 130      */
 131
 132     ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_cert_type, "server");
 133     X509_add_ext(x, ex, -1);
 134     X509_EXTENSION_free(ex);
 135
 136     ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_comment,
 137                              "example comment extension");
 138     X509_add_ext(x, ex, -1);
 139     X509_EXTENSION_free(ex);
 140
 141     ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_ssl_server_name,
 142                              "www.openssl.org");
 143
 144     X509_add_ext(x, ex, -1);
 145     X509_EXTENSION_free(ex);
 146
 147 #if 0
 148     /* might want something like this too.... */
 149     ex = X509V3_EXT_conf_nid(NULL, NULL, NID_basic_constraints,
 150                              "critical,CA:TRUE");
 151
 152     X509_add_ext(x, ex, -1);
 153     X509_EXTENSION_free(ex);
 154 #endif
 155
 156 #ifdef CUSTOM_EXT
 157     /* Maybe even add our own extension based on existing */
 158     {
 159         int nid;
 160         nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension");
 161         X509V3_EXT_add_alias(nid, NID_netscape_comment);
 162         ex = X509V3_EXT_conf_nid(NULL, NULL, nid, "example comment alias");
 163         X509_add_ext(x, ex, -1);
 164         X509_EXTENSION_free(ex);
 165     }
 166 #endif
 167
 168     if (!X509_sign(x, pk, EVP_md5()))
 169         goto err;
 170
 171     *x509p = x;
 172     *pkeyp = pk;
 173     return (1);
 174  err:
 175     return (0);
 176 }