2 * Certificate request creation. Demonstrates some request related
9 #include <openssl/pem.h>
10 #include <openssl/conf.h>
11 #include <openssl/x509.h>
12 #include <openssl/x509v3.h>
13 #ifndef OPENSSL_NO_ENGINE
14 # include <openssl/engine.h>
17 int mkreq(X509_REQ **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
18 int add_ext(STACK_OF(X509_EXTENSION) *sk, int nid, char *value);
20 int main(int argc, char **argv)
24 EVP_PKEY *pkey = NULL;
26 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
28 bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
30 mkreq(&req, &pkey, 512, 0, 365);
32 RSA_print_fp(stdout, pkey->pkey.rsa, 0);
33 X509_REQ_print_fp(stdout, req);
35 PEM_write_X509_REQ(stdout, req);
40 #ifndef OPENSSL_NO_ENGINE
43 CRYPTO_cleanup_all_ex_data();
45 CRYPTO_mem_leaks(bio_err);
50 static void callback(int p, int n, void *arg)
65 int mkreq(X509_REQ **req, EVP_PKEY **pkeyp, int bits, int serial, int days)
70 X509_NAME *name = NULL;
71 STACK_OF(X509_EXTENSION) *exts = NULL;
73 if ((pk = EVP_PKEY_new()) == NULL)
76 if ((x = X509_REQ_new()) == NULL)
79 rsa = RSA_generate_key(bits, RSA_F4, callback, NULL);
80 if (!EVP_PKEY_assign_RSA(pk, rsa))
85 X509_REQ_set_pubkey(x, pk);
87 name = X509_REQ_get_subject_name(x);
90 * This function creates and adds the entry, working out the correct
91 * string type and performing checks on its length. Normally we'd check
92 * the return value for errors...
94 X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC, "UK", -1, -1, 0);
95 X509_NAME_add_entry_by_txt(name, "CN",
96 MBSTRING_ASC, "OpenSSL Group", -1, -1, 0);
98 #ifdef REQUEST_EXTENSIONS
100 * Certificate requests can contain extensions, which can be used to
101 * indicate the extensions the requestor would like added to their
102 * certificate. CAs might ignore them however or even choke if they are
107 * For request extensions they are all packed in a single attribute. We
108 * save them in a STACK and add them all at once later...
111 exts = sk_X509_EXTENSION_new_null();
112 /* Standard extenions */
114 add_ext(exts, NID_key_usage, "critical,digitalSignature,keyEncipherment");
117 * This is a typical use for request extensions: requesting a value for
118 * subject alternative name.
121 add_ext(exts, NID_subject_alt_name, "email:steve@openssl.org");
123 /* Some Netscape specific extensions */
124 add_ext(exts, NID_netscape_cert_type, "client,email");
127 /* Maybe even add our own extension based on existing */
130 nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension");
131 X509V3_EXT_add_alias(nid, NID_netscape_comment);
132 add_ext(x, nid, "example comment alias");
136 /* Now we've created the extensions we add them to the request */
138 X509_REQ_add_extensions(x, exts);
140 sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
144 if (!X509_REQ_sign(x, pk, EVP_sha1()))
155 * Add extension using V3 code: we can set the config file as NULL because we
156 * wont reference any other sections.
159 int add_ext(STACK_OF(X509_EXTENSION) *sk, int nid, char *value)
162 ex = X509V3_EXT_conf_nid(NULL, NULL, nid, value);
165 sk_X509_EXTENSION_push(sk, ex);