| #![no_std] |
| |
| use libtock::hmac::{HmacDataBuffer, HmacDestBuffer, HmacKeyBuffer}; |
| use libtock::println; |
| use libtock::result::TockResult; |
| use libtock::syscalls; |
| |
| #[libtock::main] |
| async fn main() -> TockResult<()> { |
| let mut drivers = libtock::retrieve_drivers()?; |
| drivers.console.create_console(); |
| println!("Starting HMAC example"); |
| let hmac_driver = drivers.hmac.init_driver()?; |
| |
| println!("Loading in 0 key"); |
| let mut key_buffer = HmacKeyBuffer::default(); |
| let _key_buffer = hmac_driver.init_key_buffer(&mut key_buffer)?; |
| println!(" done"); |
| |
| println!("Creating data buffer"); |
| let mut data_buffer = HmacDataBuffer::default(); |
| let data: &[u8; 72] = |
| b"A language empowering everyone to build reliable and efficient software."; |
| |
| for (i, d) in data.iter().enumerate() { |
| data_buffer[i] = *d; |
| } |
| let _data_buffer = hmac_driver.init_data_buffer(&mut data_buffer)?; |
| println!(" done"); |
| |
| println!("Creating dest buffer"); |
| let mut dest_buffer = HmacDestBuffer::default(); |
| let dest_buffer = hmac_driver.init_dest_buffer(&mut dest_buffer)?; |
| println!(" done"); |
| |
| let mut temp_buffer = [0; libtock::hmac::DEST_BUFFER_SIZE]; |
| |
| println!("Setting callback and running"); |
| let mut callback = |_result, _digest| { |
| println!("HMAC Complete, printing digest"); |
| dest_buffer.read_bytes(&mut temp_buffer[..]); |
| |
| for buf in temp_buffer.iter().take(libtock::hmac::DEST_BUFFER_SIZE) { |
| println!("{:x}", *buf); |
| } |
| }; |
| |
| let _subscription = hmac_driver.subscribe(&mut callback)?; |
| |
| hmac_driver.run()?; |
| |
| loop { |
| unsafe { syscalls::raw::yieldk() }; |
| } |
| } |