Function orion::util::secure_cmp

#[must_use]
pub fn secure_cmp(a: &[u8], b: &[u8]) -> Result<bool, UnknownCryptoError>

Compare two equal length slices in constant time.

About:

Compare two equal length slices, in constant time, using the subtle crate.

Parameters:

• a: The first slice used in the comparison.
• b: The second slice used in the comparison.

Errors:

An error will be returned if:

• a and b do not have the same length.
• a is not equal to b.

Example:

use orion::util;

let mut mac = [0u8; 64];
assert!(util::secure_cmp(&mac, &[0u8; 64])?);

util::secure_rand_bytes(&mut mac)?;
assert!(util::secure_cmp(&mac, &[0u8; 64]).is_err());