updates for draft-ietf-tls-ecc-03.txt
[openssl.git] / demos / x509 / mkcert.c
1 /* Certificate creation. Demonstrates some certificate related
2  * operations.
3  */
4
5
6 #include <stdio.h>
7 #include <stdlib.h>
8
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>
14 #endif
15
16 int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
17 int add_ext(X509 *cert, int nid, char *value);
18
19 int main(int argc, char **argv)
20         {
21         BIO *bio_err;
22         X509 *x509=NULL;
23         EVP_PKEY *pkey=NULL;
24
25         CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
26
27         bio_err=BIO_new_fp(stderr, BIO_NOCLOSE);
28
29         mkcert(&x509,&pkey,512,0,365);
30
31         RSA_print_fp(stdout,pkey->pkey.rsa,0);
32         X509_print_fp(stdout,x509);
33
34         PEM_write_PrivateKey(stdout,pkey,NULL,NULL,0,NULL, NULL);
35         PEM_write_X509(stdout,x509);
36
37         X509_free(x509);
38         EVP_PKEY_free(pkey);
39
40 #ifndef OPENSSL_NO_ENGINE
41         ENGINE_cleanup();
42 #endif
43         CRYPTO_cleanup_all_ex_data();
44
45         CRYPTO_mem_leaks(bio_err);
46         BIO_free(bio_err);
47         return(0);
48         }
49
50 static void callback(int p, int n, void *arg)
51         {
52         char c='B';
53
54         if (p == 0) c='.';
55         if (p == 1) c='+';
56         if (p == 2) c='*';
57         if (p == 3) c='\n';
58         fputc(c,stderr);
59         }
60
61 int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days)
62         {
63         X509 *x;
64         EVP_PKEY *pk;
65         RSA *rsa;
66         X509_NAME *name=NULL;
67         
68         if ((pkeyp == NULL) || (*pkeyp == NULL))
69                 {
70                 if ((pk=EVP_PKEY_new()) == NULL)
71                         {
72                         abort(); 
73                         return(0);
74                         }
75                 }
76         else
77                 pk= *pkeyp;
78
79         if ((x509p == NULL) || (*x509p == NULL))
80                 {
81                 if ((x=X509_new()) == NULL)
82                         goto err;
83                 }
84         else
85                 x= *x509p;
86
87         rsa=RSA_generate_key(bits,RSA_F4,callback,NULL);
88         if (!EVP_PKEY_assign_RSA(pk,rsa))
89                 {
90                 abort();
91                 goto err;
92                 }
93         rsa=NULL;
94
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);
100
101         name=X509_get_subject_name(x);
102
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...
106          */
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);
111
112         /* Its self signed so set the issuer name to be the same as the
113          * subject.
114          */
115         X509_set_issuer_name(x,name);
116
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");
120
121         add_ext(x, NID_subject_key_identifier, "hash");
122
123         /* Some Netscape specific extensions */
124         add_ext(x, NID_netscape_cert_type, "sslCA");
125
126         add_ext(x, NID_netscape_comment, "example comment extension");
127
128
129 #ifdef CUSTOM_EXT
130         /* Maybe even add our own extension based on existing */
131         {
132                 int nid;
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");
136         }
137 #endif
138         
139         if (!X509_sign(x,pk,EVP_md5()))
140                 goto err;
141
142         *x509p=x;
143         *pkeyp=pk;
144         return(1);
145 err:
146         return(0);
147         }
148
149 /* Add extension using V3 code: we can set the config file as NULL
150  * because we wont reference any other sections.
151  */
152
153 int add_ext(X509 *cert, int nid, char *value)
154         {
155         X509_EXTENSION *ex;
156         X509V3_CTX ctx;
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
162          */
163         X509V3_set_ctx(&ctx, cert, cert, NULL, NULL, 0);
164         ex = X509V3_EXT_conf_nid(NULL, &ctx, nid, value);
165         if (!ex)
166                 return 0;
167
168         X509_add_ext(cert,ex,-1);
169         X509_EXTENSION_free(ex);
170         return 1;
171         }
172