Simple encryption algorithm example needed

Can any of you send me to a site that can help me learn about encryption algorithms and that has a few samples?
I'm looking for a "cryptography for dummies" kind of site. :)

Thanks
Nicolas_St_AmourAsked:
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caraf_gCommented:
Easiest encryption ever on a computer:

Take plaintext
Take a key
XOR
Now you have cyphertext

Take the cyphertext
Take the key
XOR
now you have the plaintext again

Of course this method is so well known that no serious hacker will have any problems cracking it.
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jjmartinCommented:
Lots of examples at http://www.planet-source-code.com
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johnny6Commented:
Here is a useful site that contains source code for encryption/decrytption of data: http://www.codearchive.com/vbasic/encrypt.html
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