Enum block_padding::Iso7816

pub enum Iso7816 {}

Pad block with byte sequence \x80 00...00 00.

use block_padding::{Iso7816, Padding};

let msg = b"test";
let n = msg.len();
let mut buffer = [0xff; 16];
buffer[..n].copy_from_slice(msg);
let padded_msg = Iso7816::pad(&mut buffer, n, 8).unwrap();
assert_eq!(padded_msg, b"test\x80\x00\x00\x00");
assert_eq!(Iso7816::unpad(&padded_msg).unwrap(), msg);

let padded_msg = Iso7816::pad(&mut buffer, n, 2).unwrap();
assert_eq!(padded_msg, b"test\x80\x00");
assert_eq!(Iso7816::unpad(&padded_msg).unwrap(), msg);

Trait Implementations

impl Clone for Iso7816

fn clone(&self) -> Iso7816

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Iso7816

impl Debug for Iso7816

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Padding for Iso7816

fn pad_block(block: &mut [u8], pos: usize) -> Result<(), PadError>

Pads block filled with data up to pos.

fn unpad(data: &[u8]) -> Result<&[u8], UnpadError>

Unpad given data by truncating it according to the used padding. In case of the malformed padding will return UnpadError

fn pad(
    buf: &mut [u8],
    pos: usize,
    block_size: usize
) -> Result<&mut [u8], PadError>

Pads message with length pos in the provided buffer.