Enum block_padding::Pkcs7
source · [−]pub enum Pkcs7 {}
Expand description
Pad block with bytes with value equal to the number of bytes added.
PKCS#7 described in the RFC 5652.
use block_padding::{Pkcs7, Padding};
let msg = b"test";
let n = msg.len();
let mut buffer = [0xff; 8];
buffer[..n].copy_from_slice(msg);
let padded_msg = Pkcs7::pad(&mut buffer, n, 8).unwrap();
assert_eq!(padded_msg, b"test\x04\x04\x04\x04");
assert_eq!(Pkcs7::unpad(&padded_msg).unwrap(), msg);
let padded_msg = Pkcs7::pad(&mut buffer, n, 2).unwrap();
assert_eq!(padded_msg, b"test\x02\x02");
assert_eq!(Pkcs7::unpad(&padded_msg).unwrap(), msg);
let mut buffer = [0xff; 5];
assert!(Pkcs7::pad(&mut buffer, 4, 2).is_err());
assert!(Pkcs7::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
sourceimpl Padding for Pkcs7
impl Padding for Pkcs7
sourcefn pad_block(block: &mut [u8], pos: usize) -> Result<(), PadError>
fn pad_block(block: &mut [u8], pos: usize) -> Result<(), PadError>
Pads block
filled with data up to pos
. Read more
Auto Trait Implementations
impl RefUnwindSafe for Pkcs7
impl Send for Pkcs7
impl Sync for Pkcs7
impl Unpin for Pkcs7
impl UnwindSafe for Pkcs7
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more