= THIS GEM IS DEPRECATED

I recommend that you use the {xorcist}[https://github.com/fny/xorcist] gem instead, as it has more features and support.

== String XOR Ruby Extension

+fast_xor+ is a simple extension which provides fast in-place String XOR functions, suitable for cryptography.

== How do you use it?

require 'xor'

two-argument version

a, b = 'a string', 'another string' a.xor!(b) a == "\000N\034\000\032\f\034G"

three-argument version

a, b, c = 'a string', 'another string', 'yet another string' a.xor!(b, c) a == "y+h {bs3"

== How fast is "Fast"?

Over 5,000x faster than pure Ruby, on my machine (your mileage my vary):

$ ./benchmark user system total real Ruby : 4.530000 0.000000 4.530000 ( 4.535203) C (x1000): 0.780000 0.000000 0.780000 ( 0.781100)