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PHP Challange / Learning Experance - Basic Criptography


GoneNowBye

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Sorry for my spelling, dislexic power guys sorry.

 

Anyway, challange for you today. hopefully I can help someone

 

This challange here, is a decode chalanage, i will give you some clues.

 

I want you to decode the following, I know what the key is and what i started with. so....

 

here's the code

pEVCDXYUR^YPVU[RCXSRT^G_REC_^DERV[[NREZ~CU__VARYX^SRV@_VC^D_XB[s@E^CR_RERXC_REC_RYPEVCDXQTREZ:=:=DCV[[:=:=DCV[[:=:=DCV[[:=:=tXYPEVCB[VC^XYDXYGVDD^YPC_RT_V[VYPR:=:=VAX\:=

 

....Yeah thats a message

 

Right now the cipher.

 

The key is one character long.

and the method is Xor. :)

 

Xor takes binary data and does something with it

 

so if we have the following:

 

Data: 0000

Key : 1111

 

result: 1111

 

to get it back out:

 

result = data

Data: 1111

Key : 1111

 

result: 0000

 

 

where A and B are inputs and c is an output

 

A B C

1 0 1

0 1 0

1 1 0

0 0 0

 

:) happy playing if anyone needs any more clues....

 

btw the key character isnt some uber ellaborate key that knowone has, its on every english type keybord

 

~Havok

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