2 /* cc -o ssdemo -I../include selfsign.c ../libcrypto.a */
7 #include <openssl/pem.h>
8 #include <openssl/conf.h>
9 #include <openssl/x509v3.h>
11 int mkit(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
17 EVP_PKEY *pkey = NULL;
19 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
21 bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
23 mkit(&x509, &pkey, 512, 0, 365);
25 RSA_print_fp(stdout, pkey->pkey.rsa, 0);
26 X509_print_fp(stdout, x509);
28 PEM_write_PrivateKey(stdout, pkey, NULL, NULL, 0, NULL, NULL);
29 PEM_write_X509(stdout, x509);
35 /* Only needed if we add objects or custom extensions */
40 CRYPTO_mem_leaks(bio_err);
45 static void callback(p, n, arg)
63 int mkit(x509p, pkeyp, bits, serial, days)
73 X509_NAME *name = NULL;
74 X509_NAME_ENTRY *ne = NULL;
75 X509_EXTENSION *ex = NULL;
77 if ((pkeyp == NULL) || (*pkeyp == NULL)) {
78 if ((pk = EVP_PKEY_new()) == NULL) {
85 if ((x509p == NULL) || (*x509p == NULL)) {
86 if ((x = X509_new()) == NULL)
91 rsa = RSA_generate_key(bits, RSA_F4, callback, NULL);
92 if (!EVP_PKEY_assign_RSA(pk, rsa)) {
98 X509_set_version(x, 3);
99 ASN1_INTEGER_set(X509_get_serialNumber(x), serial);
100 X509_gmtime_adj(X509_get_notBefore(x), 0);
101 X509_gmtime_adj(X509_get_notAfter(x), (long)60 * 60 * 24 * days);
102 X509_set_pubkey(x, pk);
104 name = X509_get_subject_name(x);
107 * This function creates and adds the entry, working out the correct
108 * string type and performing checks on its length. Normally we'd check
109 * the return value for errors...
111 X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC, "UK", -1, -1, 0);
112 X509_NAME_add_entry_by_txt(name, "CN",
113 MBSTRING_ASC, "OpenSSL Group", -1, -1, 0);
115 X509_set_issuer_name(x, name);
118 * Add extension using V3 code: we can set the config file as NULL
119 * because we wont reference any other sections. We can also set the
120 * context to NULL because none of these extensions below will need to
124 ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_cert_type, "server");
125 X509_add_ext(x, ex, -1);
126 X509_EXTENSION_free(ex);
128 ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_comment,
129 "example comment extension");
130 X509_add_ext(x, ex, -1);
131 X509_EXTENSION_free(ex);
133 ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_ssl_server_name,
136 X509_add_ext(x, ex, -1);
137 X509_EXTENSION_free(ex);
139 #ifdef ADD_CA_CONSTRAINT
140 /* might want something like this too.... */
141 ex = X509V3_EXT_conf_nid(NULL, NULL, NID_basic_constraints,
144 X509_add_ext(x, ex, -1);
145 X509_EXTENSION_free(ex);
148 #ifdef ADD_A_CUSTOM_EXTENSION
149 /* Maybe even add our own extension based on existing */
152 nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension");
153 X509V3_EXT_add_alias(nid, NID_netscape_comment);
154 ex = X509V3_EXT_conf_nid(NULL, NULL, nid, "example comment alias");
155 X509_add_ext(x, ex, -1);
156 X509_EXTENSION_free(ex);
160 if (!X509_sign(x, pk, EVP_md5()))