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/* NOCW */
/* cc -o ssdemo -I../include selfsign.c ../libcrypto.a */
#include <stdio.h>
#include <stdlib.h>
#include <openssl/pem.h>
#include <openssl/conf.h>
#include <openssl/x509v3.h>
int mkit(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
int main()
{
BIO *bio_err;
X509 *x509 = NULL;
EVP_PKEY *pkey = NULL;
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
mkit(&x509, &pkey, 512, 0, 365);
RSA_print_fp(stdout, pkey->pkey.rsa, 0);
X509_print_fp(stdout, x509);
PEM_write_PrivateKey(stdout, pkey, NULL, NULL, 0, NULL, NULL);
PEM_write_X509(stdout, x509);
X509_free(x509);
EVP_PKEY_free(pkey);
#ifdef CUSTOM_EXT
/* Only needed if we add objects or custom extensions */
X509V3_EXT_cleanup();
OBJ_cleanup();
#endif
CRYPTO_mem_leaks(bio_err);
BIO_free(bio_err);
return (0);
}
static void callback(p, n, arg)
int p;
int n;
void *arg;
{
char c = 'B';
if (p == 0)
c = '.';
if (p == 1)
c = '+';
if (p == 2)
c = '*';
if (p == 3)
c = '\n';
fputc(c, stderr);
}
int mkit(x509p, pkeyp, bits, serial, days)
X509 **x509p;
EVP_PKEY **pkeyp;
int bits;
int serial;
int days;
{
X509 *x;
EVP_PKEY *pk;
RSA *rsa;
X509_NAME *name = NULL;
X509_NAME_ENTRY *ne = NULL;
X509_EXTENSION *ex = NULL;
if ((pkeyp == NULL) || (*pkeyp == NULL)) {
if ((pk = EVP_PKEY_new()) == NULL) {
abort();
return (0);
}
} else
pk = *pkeyp;
if ((x509p == NULL) || (*x509p == NULL)) {
if ((x = X509_new()) == NULL)
goto err;
} else
x = *x509p;
rsa = RSA_generate_key(bits, RSA_F4, callback, NULL);
if (!EVP_PKEY_assign_RSA(pk, rsa)) {
abort();
goto err;
}
rsa = NULL;
X509_set_version(x, 3);
ASN1_INTEGER_set(X509_get_serialNumber(x), serial);
X509_gmtime_adj(X509_get_notBefore(x), 0);
X509_gmtime_adj(X509_get_notAfter(x), (long)60 * 60 * 24 * days);
X509_set_pubkey(x, pk);
name = X509_get_subject_name(x);
/*
* This function creates and adds the entry, working out the correct
* string type and performing checks on its length. Normally we'd check
* the return value for errors...
*/
X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC, "UK", -1, -1, 0);
X509_NAME_add_entry_by_txt(name, "CN",
MBSTRING_ASC, "OpenSSL Group", -1, -1, 0);
X509_set_issuer_name(x, name);
/*
* Add extension using V3 code: we can set the config file as NULL
* because we wont reference any other sections. We can also set the
* context to NULL because none of these extensions below will need to
* access it.
*/
ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_cert_type, "server");
X509_add_ext(x, ex, -1);
X509_EXTENSION_free(ex);
ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_comment,
"example comment extension");
X509_add_ext(x, ex, -1);
X509_EXTENSION_free(ex);
ex = X509V3_EXT_conf_nid(NULL, NULL, NID_netscape_ssl_server_name,
"www.openssl.org");
X509_add_ext(x, ex, -1);
X509_EXTENSION_free(ex);
#if 0
/* might want something like this too.... */
ex = X509V3_EXT_conf_nid(NULL, NULL, NID_basic_constraints,
"critical,CA:TRUE");
X509_add_ext(x, ex, -1);
X509_EXTENSION_free(ex);
#endif
#ifdef CUSTOM_EXT
/* Maybe even add our own extension based on existing */
{
int nid;
nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension");
X509V3_EXT_add_alias(nid, NID_netscape_comment);
ex = X509V3_EXT_conf_nid(NULL, NULL, nid, "example comment alias");
X509_add_ext(x, ex, -1);
X509_EXTENSION_free(ex);
}
#endif
if (!X509_sign(x, pk, EVP_md5()))
goto err;
*x509p = x;
*pkeyp = pk;
return (1);
err:
return (0);
}
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