selfsign.c revision 296465 
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
11int mkit(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
12
13int 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
53static void MS_CALLBACK callback(p, n, arg)
54int p;
55int n;
56void *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
71int mkit(x509p, pkeyp, bits, serial, days)
72X509 **x509p;
73EVP_PKEY **pkeyp;
74int bits;
75int serial;
76int 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}
177