Cheat Engine

[samuri25404]

I've been looking into Cryptography and I got curious about something.

So we've got [url=en.wikipedia.org/wiki/Alice_and_Bob]Alice and Bob[/url] .

Let's say that they're flipping a coin over the internet or whatever.

Alice sends a falsely encrypted message (garble) to Bob.

Bob believes it's valid, and reveals the result of the coin flip.

Alice, in her malicious nature, finds a key so that it fits the result of the coin.

~~

Mathematically:

G = Garble,
R = Result,
K = Key

Alice sends G

Bob gets G

Bob sends R

Alice gets R

K(G) = R

Solve backwards, Algebraically maybe?

Alice gets K

Alice sends K

K(G) = R

Bob gets K

Bob believes she predicted correctly.

~~~

Is there something wrong with that methodology, or have there been preventions, or what?