diff options
Diffstat (limited to 'openssl/demos/x509/mkreq.c')
| -rw-r--r-- | openssl/demos/x509/mkreq.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/openssl/demos/x509/mkreq.c b/openssl/demos/x509/mkreq.c new file mode 100644 index 000000000..3dfc65f16 --- /dev/null +++ b/openssl/demos/x509/mkreq.c @@ -0,0 +1,161 @@ +/* Certificate request creation. Demonstrates some request related + * operations. + */ + +#include <stdio.h> +#include <stdlib.h> + +#include <openssl/pem.h> +#include <openssl/conf.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_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_md5())) + 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; + } + |