11.2. The Crypt Application
We are now going to develop a parallel application on top of our compute server. Our application is an exercise in applied cryptography, which is another way of saying we are going to write an application that breaks encrypted passwords.
11.2.1. Background
A common method of encrypting passwords, particularly in UNIX systems, is the use of a one-way encryption algorithm, which takes the user's password as input and returns the user's encrypted password. For instance, a password of “ secret” may result in the output “ BgU8DFSLhhz6Q.” One-way functions that work well for encryption have the property that, given the encrypted version of a password, it is difficult to compute the inverse of the function to produce the ...
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