Function nettle_sys::nettle_hkdf_extract

pub unsafe extern "C" fn nettle_hkdf_extract(
    mac_ctx: *mut c_void, 
    update: nettle_hash_update_func, 
    digest: nettle_hash_digest_func, 
    digest_size: usize, 
    secret_size: usize, 
    secret: *const u8, 
    dst: *mut u8
)