Weird ZKM String obfuscation

[alaaeelsayed]

I tried sending an email but I don't think I have the right one. I got a jar file that seems to be obfuscated using ZKM, not quite sure what it is though, the thing is I seem to have found both the string obfuscation with the massive switch and the one with DES. I provided 3 sample classes, can give you the whole jar if you want, it's a modified Minecraft client. I tried running the string deobfuscator on it and it runs with no successful decryptions.
https://transfer.sh/lDgZS/classes.zip

[fee1-dead]

write your own, this is from 2 years ago