int add_oid_section(BIO *err, LHASH *conf);
X509 *load_cert(BIO *err, char *file, int format);
EVP_PKEY *load_key(BIO *err, char *file, int format, char *pass);
+EVP_PKEY *load_pubkey(BIO *err, char *file, int format);
STACK_OF(X509) *load_certs(BIO *err, char *file, int format);
#define FORMAT_UNDEF 0