Macro hard::buffer

macro_rules! buffer {
    ($size:expr$(;)?) => { ... };
}

Create a fixed-size anonymous buffer.

buffer!(Size) will initialise a new buffer of length Size bytes, returning Result<Buffer, HardError>.

The buffer will implement the following traits:

• Buffer and BufferMut
• AsRef<[u8; Size]> and AsMut<[u8; Size]>
• Borrow<[u8; $size]> and [`BorrowMut<[u8;
• Debug
• Deref<Target = [u8; Size]> and DerefMut $size]>`](std::borrow::BorrowMut)
• PartialEq<Rhs = BufferMut or BufferReadOnly> and Eq
  • This implementation uses a constant-time comparison function, suitable for comparing sensitive data without the risk of timing attacks.
• Pointer

Example Usage

use hard::buffer;

// Create a 32-byte buffer
let mut some_buffer = buffer!(32).unwrap();
some_buffer.copy_from_slice(b"Copy this data into that buffer.");

let mut another_buffer = buffer!(32).unwrap();
some_buffer.copy_from_slice(b"We'll compare these two buffers.");

// This comparison is a constant-time equality-check of the contents of the two buffers
assert!(some_buffer != another_buffer);