How to verify a decrypted cyphertext

From: alexpheno@xxxxxxxxx
Date: 18 May 2006 09:18:24 -0000

Hello list,

Does anybody know how a computer verifies that it has succesfully decrypted a
cyphertext?

In the case of Project RC5, they have to find out a string which is known to be
readable and probably use pattern-matching algorithms based on some sort of
dictionary (my 2 cents). But in the case of a encrypted random string how woud one
know that the solution has been found.

Thanks.

Follow-Ups:
- RE: How to verify a decrypted cyphertext
  - From: David Gillett
- Re: How to verify a decrypted cyphertext
  - From: Brian Beck

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