The n=2 case also occurs in the commit: https://github.com/sudo-project/sudo/commit/7873f8334c8d31031f8cfa83bd97ac6029309e4f#diff-bc39bcb6f7119485e73eb37357a3e3

The n=2 case also occurs in the commit: https://github.com/sudo-project/sudo/commit/7873f8334c8d31031f8cfa83bd97ac6029309e4f#diff-bc39bcb6f7119485e73eb37357a3e3ae1123fe09ac06b040f090b3218f186cb1R39 https://github.com/sudo-project/sudo/commit/7873f8334c8d3103... And indeed, the two values ate bitwise complements.