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[quote]please tell me you don't wear a cape to school[/quote]

fackin

Gedo,
do i look like the type of person that would wear a cape?? please don't insult me ninyahow.

[quote="SomaliLight"]Gedo,
do i look like the type of person that would wear a cape?? please don't insult me ninyahow.[/quote]


it was just a joke, but what galaxy is that guy on your avatar from?

and how many light years is it away from us?

[quote="SomaliLight"]GedoBOy,

the Vigenere cypher is acutally pretty tuff, I had a friend of mine give a V cypher code, and I tried once doing one of these, and It took me like ages to get. Depending what your encrypting, i think it is pretty tough stuff.[/quote]


yeah, but it is pretty easy to decrypt once you know the key

nabeela not smartness, rather hobby Gedo thnx

ERROR, THANKS I FIGURED IT OUT RIGHT AFTER YOU

"yeah, but it is pretty easy to decrypt once you know the key"

Is there a way you can get the key or is this one of those methods that can not be cracked?

ERROR .......... "The geek shall inherit the earth"

SomaliLight

Qansa,

basically it's like the one you had only there's a different displacement for every 1st, 2nd, 3rd letter etc.

you switched every letter by two ......so your substitution would look like [2] for every letter

but in this cipher you might switch the first letter by a certain amount [2], the second letter a different amount [4], the third [5] etc.

so you would end up w/ an 'n' key cipher something like: [2,4,5,6,3,1,9] where n=7 in this case. So after 7 letters you would wrap around back again.


so if you wanted to share with someone, you would give them [2,4,5,6,3,1,9] and they would know how to decrypt your message by:

- shifting the 1stletter by 2
- shifting the 2nd letter by 4
- shifting the 3rd letter by 5
- shifting the 4th letter by 6

.......and so on

[quote="QansaGabeyle"]"yeah, but it is pretty easy to decrypt once you know the key"

Is there a way you can get the key or is this one of those methods that can not be cracked?[/quote]


no, it can be cracked but just not as easily the Caesar Cipher.

the ones that can't be cracked are the mathematically complex ones which take advantage of modular exponentiation like RSA, El-Gammal

Thanks bro. I ready about the one you posted and it was not very clear. Actually I skimmed through it ......but thanks for the concise explanation of how this thing works. Do you know about Blowfish?

http://www.trincoll.edu/depts/cpsc/cryp ... enere.html