pub unsafe extern "C" fn pkcs12_derivation(
    data: *mut c_uchar,
    datalen: size_t,
    pwd: *const c_uchar,
    pwdlen: size_t,
    salt: *const c_uchar,
    saltlen: size_t,
    mbedtls_md: md_type_t,
    id: c_int,
    iterations: c_int
) -> c_int