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Comments by lsatenstein (Top 2 by date)

lsatenstein 7-Mar-12 15:25pm View    
I have not coded the solution. But I think that the challenge is good enough for a junior programmer to do so. I thought about this problem for some time before I think I found the solution.
lsatenstein 7-Mar-12 15:17pm View    
I have figured out how to do it. In the actual implementation, the user has 20 minutes to receive the unlock string. If the response takes more than 20 minutes, it times out and the user must start over, with the new system generated challenge string. What I want to know is if there is more than one way to solve this problem.

The challenge is interesting as a problem to solve. The context is based on a secure -no network access environment.