``I just came up with this neat method of encryption. Here's some

ciphertext: FHDSIJOYW^&%$*#@OGBUJHKFSYUIRE. Is it strong?'' Without a

doubt questions like this are the most annoying traffic on sci.crypt.

If you have come up with an encryption scheme, providing some

ciphertext from it is not adequate. Nobody has ever been impressed by

random gibberish. Any new algorithm should be secure even if the

opponent knows the full algorithm (including how any message key is

distributed) and only the private key is kept secret. There are some

systematic and unsystematic ways to take reasonably long ciphertexts

and decrypt them even without prior knowledge of the algorithm, but

this is a time-consuming and possibly fruitless exercise which most

sci.crypt readers won't bother with.

Thats a quote on Net Etiquette for the google sci.crypt group