openssl_sys::PEM_write_bio_PrivateKey

pub unsafe extern fn PEM_write_bio_PrivateKey(bio: *mut BIO, pkey: *mut EVP_PKEY, cipher: *const EVP_CIPHER, kstr: *mut c_uchar, klen: c_int, callback: Option<PasswordCallback>, user_data: *mut c_void) -> c_int