[O]nce upon a time there was a girl called
Alice, and she wanted to send a message to her friend
Bob. So she decided to
encrypt the message so that no one can understand it.
Can you find the original message, given that the encrypted message is "opptvpzfft" ?
No cryptographers interested !!?
ReplyDeleteOk, one more hint,
ReplyDeleteThis encryption function contains "confusion" + "diffusion" but in their most basic forms.
http://en.wikipedia.org/wiki/Confusion_and_diffusion