Enum block_padding::AnsiX923

pub enum AnsiX923 {}

Pad block with zeros except the last byte which will be set to the number bytes.

use block_padding::{AnsiX923, Padding};

let msg = b"test";
let n = msg.len();
let mut buffer = [0xff; 16];
buffer[..n].copy_from_slice(msg);
let padded_msg = AnsiX923::pad(&mut buffer, n, 8).unwrap();
assert_eq!(padded_msg, b"test\x00\x00\x00\x04");
assert_eq!(AnsiX923::unpad(&padded_msg).unwrap(), msg);

let padded_msg = AnsiX923::pad(&mut buffer, n, 2).unwrap();
assert_eq!(padded_msg, b"test\x00\x02");
assert_eq!(AnsiX923::unpad(&padded_msg).unwrap(), msg);

assert!(AnsiX923::unpad(&buffer).is_err());

In addition to conditions stated in the Padding trait documentation, pad_block will return PadError if block.len() > 255, and in case of pad if block_size > 255.

Trait Implementations

impl Padding for AnsiX923

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.