int X509_REQ_set_subject_name(X509_REQ *req,X509_NAME *name);
int X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey);
EVP_PKEY * X509_REQ_get_pubkey(X509_REQ *req);
+int X509_REQ_extension_nid(int nid);
+int * X509_REQ_get_extesion_nids(void);
+void X509_REQ_set_extension_nids(int *nids);
+STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req);
int X509_check_private_key(X509 *x509,EVP_PKEY *pkey);