3 ms·

It cuts it vastly more than in half. For n character alphabetic values, it reduces the keyspace from 52^n to 26^n.

• stouset 12y ago
  That would be for case-insensitive matching, not matching on the case being inverted.
• wzsddtc 12y ago
  For the 2 matching cases, it only reduces to 51^n
• 0942v8653 12y ago
  That's only if it works with Mac-style caps lock.