detect encryption method

Is there a tool that automatically looks if popular encryption methods were used on a text if I have the decrypted as well as encrypted text?
If you don't know a tool could you please at least advise me to a forum where I could get some help with this.

>>1,7
Hi.

This is /prog/ when in /prog/ you do as /prog/ does.
Here in /prog/ we do not ask where to get lolhax.exe, you program lolhax.exe.

Assuming that you did really intend to program lolhax.exe, and that you have both the encrypted text and decrypted text.

If it is true, here's what you do. you use the decrpyted text and run various encryption algo's on it to see if you get the same encrypted text result.

If you have no clue what I just said, /comp/ is just straight down the aisle and to the right.