Enum block_padding::ZeroPadding

[−] Show declaration

pub enum ZeroPadding {}

[−] Expand description

Pad block with zeros.

use block_padding::{ZeroPadding, Padding};

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

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

Note that zero padding may not be reversible if the original message ends with one or more zero bytes.

Trait Implementations

impl Clone for ZeroPadding[+]

[+] Show hidden undocumented items

fn clone(&self) -> ZeroPadding[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Copy for ZeroPadding

impl Debug for ZeroPadding[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl Padding for ZeroPadding[+]

[+] Show hidden undocumented items

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

Pads block filled with data up to pos.

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

Pads message with length pos in the provided buffer.

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