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use std::os::raw::{c_int, c_char};

pub enum botan_mac_struct {}
pub type botan_mac_t = *mut botan_mac_struct;

extern "C" {

    pub fn botan_mac_init(
        mac: *mut botan_mac_t,
        mac_name: *const c_char,
        flags: u32,
    ) -> c_int;

    pub fn botan_mac_output_length(
        mac: botan_mac_t,
        output_length: *mut usize,
    ) -> c_int;

    pub fn botan_mac_set_key(
        mac: botan_mac_t,
        key: *const u8,
        key_len: usize,
    ) -> c_int;

    pub fn botan_mac_name(mac: botan_mac_t, name: *mut c_char, name_len: *mut usize) -> c_int;

    pub fn botan_mac_get_keyspec(mac: botan_mac_t,
                                 min_keylen: *mut usize,
                                 max_keylen: *mut usize,
                                 mod_keylen: *mut usize) -> c_int;

    pub fn botan_mac_update(mac: botan_mac_t, buf: *const u8, len: usize) -> c_int;
    pub fn botan_mac_final(mac: botan_mac_t, out: *mut u8) -> c_int;
    pub fn botan_mac_clear(mac: botan_mac_t) -> c_int;
    pub fn botan_mac_destroy(mac: botan_mac_t) -> c_int;

}