FIX: support utf-8 string

[snow]

[snow]

test fails, please wait for me fixing it.

[yob]

I'm not totally across the RC4 algorithm, but is this definitely what should be done?

If anything, I'd have guessed force_encoding('binary'). unpack('C*') might be the best way to ensure comparability with any input encoding.

[snow]

If anything, I'd have guessed force_encoding('binary'). unpack('C*') might be the best way to ensure comparability with any input encoding.

I'll try it when I'm free. Thank you for suggestion.

[yob]

Good luck!