Function secure_cmp Copy item path

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 rnd_bytes = [0u8; 64];
assert!(util::secure_cmp(&rnd_bytes, &[0u8; 64]).is_ok());

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