/* Certificate request creation. Demonstrates some request related * operations. */ #include #include #include #include #include #ifndef OPENSSL_NO_ENGINE #include #endif int mkreq(X509_REQ **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days); int add_ext(STACK_OF(X509_REQUEST) *sk, int nid, char *value); int main(int argc, char **argv) { BIO *bio_err; X509_REQ *req=NULL; EVP_PKEY *pkey=NULL; CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); bio_err=BIO_new_fp(stderr, BIO_NOCLOSE); mkreq(&req,&pkey,512,0,365); RSA_print_fp(stdout,pkey->pkey.rsa,0); X509_REQ_print_fp(stdout,req); PEM_write_X509_REQ(stdout,req); X509_REQ_free(req); EVP_PKEY_free(pkey); #ifndef OPENSSL_NO_ENGINE ENGINE_cleanup(); #endif CRYPTO_cleanup_all_ex_data(); CRYPTO_mem_leaks(bio_err); BIO_free(bio_err); return(0); } static void callback(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 mkreq(X509_REQ **req, EVP_PKEY **pkeyp, int bits, int serial, int days) { X509_REQ *x; EVP_PKEY *pk; RSA *rsa; X509_NAME *name=NULL; STACK_OF(X509_EXTENSION) *exts = NULL; if ((pk=EVP_PKEY_new()) == NULL) goto err; if ((x=X509_REQ_new()) == NULL) goto err; rsa=RSA_generate_key(bits,RSA_F4,callback,NULL); if (!EVP_PKEY_assign_RSA(pk,rsa)) goto err; rsa=NULL; X509_REQ_set_pubkey(x,pk); name=X509_REQ_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); #ifdef REQUEST_EXTENSIONS /* Certificate requests can contain extensions, which can be used * to indicate the extensions the requestor would like added to * their certificate. CAs might ignore them however or even choke * if they are present. */ /* For request extensions they are all packed in a single attribute. * We save them in a STACK and add them all at once later... */ exts = sk_X509_EXTENSION_new_null(); /* Standard extenions */ add_ext(exts, NID_key_usage, "critical,digitalSignature,keyEncipherment"); /* This is a typical use for request extensions: requesting a value for * subject alternative name. */ add_ext(exts, NID_subject_alt_name, "email:steve@openssl.org"); /* Some Netscape specific extensions */ add_ext(exts, NID_netscape_cert_type, "client,email"); #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); add_ext(x, nid, "example comment alias"); } #endif /* Now we've created the extensions we add them to the request */ X509_REQ_add_extensions(x, exts); sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free); #endif if (!X509_REQ_sign(x,pk,EVP_sha1())) goto err; *req=x; *pkeyp=pk; return(1); err: return(0); } /* Add extension using V3 code: we can set the config file as NULL * because we wont reference any other sections. */ int add_ext(STACK_OF(X509_REQUEST) *sk, int nid, char *value) { X509_EXTENSION *ex; ex = X509V3_EXT_conf_nid(NULL, NULL, nid, value); if (!ex) return 0; sk_X509_EXTENSION_push(sk, ex); return 1; }