diff options
Diffstat (limited to 'openssl/demos/x509/mkreq.c')
| -rw-r--r-- | openssl/demos/x509/mkreq.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/openssl/demos/x509/mkreq.c b/openssl/demos/x509/mkreq.c new file mode 100644 index 0000000..4d2ad79 --- /dev/null +++ b/openssl/demos/x509/mkreq.c @@ -0,0 +1,168 @@ +/* + * Certificate request creation. Demonstrates some request related + * operations. + */ + +#include <stdio.h> +#include <stdlib.h> + +#include <openssl/pem.h> +#include <openssl/conf.h> +#include <openssl/x509.h> +#include <openssl/x509v3.h> +#ifndef OPENSSL_NO_ENGINE +# include <openssl/engine.h> +#endif + +int mkreq(X509_REQ **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days); +int add_ext(STACK_OF(X509_EXTENSION) *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_EXTENSION) *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; +} |