1 /* Certificate creation. Demonstrates some certificate related
9 #include <openssl/pem.h>
10 #include <openssl/conf.h>
11 #include <openssl/x509v3.h>
12 #ifndef OPENSSL_NO_ENGINE
13 #include <openssl/engine.h>
16 int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
17 int add_ext(X509 *cert, int nid, char *value);
19 int main(int argc, char **argv)
25 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
27 bio_err=BIO_new_fp(stderr, BIO_NOCLOSE);
29 mkcert(&x509,&pkey,512,0,365);
31 RSA_print_fp(stdout,pkey->pkey.rsa,0);
32 X509_print_fp(stdout,x509);
34 PEM_write_PrivateKey(stdout,pkey,NULL,NULL,0,NULL, NULL);
35 PEM_write_X509(stdout,x509);
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)
61 int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days)
68 if ((pkeyp == NULL) || (*pkeyp == NULL))
70 if ((pk=EVP_PKEY_new()) == NULL)
79 if ((x509p == NULL) || (*x509p == NULL))
81 if ((x=X509_new()) == NULL)
87 rsa=RSA_generate_key(bits,RSA_F4,callback,NULL);
88 if (!EVP_PKEY_assign_RSA(pk,rsa))
95 X509_set_version(x,2);
96 ASN1_INTEGER_set(X509_get_serialNumber(x),serial);
97 X509_gmtime_adj(X509_get_notBefore(x),0);
98 X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days);
99 X509_set_pubkey(x,pk);
101 name=X509_get_subject_name(x);
103 /* This function creates and adds the entry, working out the
104 * correct string type and performing checks on its length.
105 * Normally we'd check the return value for errors...
107 X509_NAME_add_entry_by_txt(name,"C",
108 MBSTRING_ASC, "UK", -1, -1, 0);
109 X509_NAME_add_entry_by_txt(name,"CN",
110 MBSTRING_ASC, "OpenSSL Group", -1, -1, 0);
112 /* Its self signed so set the issuer name to be the same as the
115 X509_set_issuer_name(x,name);
117 /* Add various extensions: standard extensions */
118 add_ext(x, NID_basic_constraints, "critical,CA:TRUE");
119 add_ext(x, NID_key_usage, "critical,keyCertSign,cRLSign");
121 add_ext(x, NID_subject_key_identifier, "hash");
123 /* Some Netscape specific extensions */
124 add_ext(x, NID_netscape_cert_type, "sslCA");
126 add_ext(x, NID_netscape_comment, "example comment extension");
130 /* Maybe even add our own extension based on existing */
133 nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension");
134 X509V3_EXT_add_alias(nid, NID_netscape_comment);
135 add_ext(x, nid, "example comment alias");
139 if (!X509_sign(x,pk,EVP_sha1()))
149 /* Add extension using V3 code: we can set the config file as NULL
150 * because we wont reference any other sections.
153 int add_ext(X509 *cert, int nid, char *value)
157 /* This sets the 'context' of the extensions. */
158 /* No configuration database */
159 X509V3_set_ctx_nodb(&ctx);
160 /* Issuer and subject certs: both the target since it is self signed,
161 * no request and no CRL
163 X509V3_set_ctx(&ctx, cert, cert, NULL, NULL, 0);
164 ex = X509V3_EXT_conf_nid(NULL, &ctx, nid, value);
168 X509_add_ext(cert,ex,-1);
169 X509_EXTENSION_free(ex);