Monday, May 25, 2009

Roger Grimes' Password Calculator Spreadsheet

Roger Grimes has built a password calculator spreadsheet that shows the success rate of real-world password-guessing attacks. You can use four different password entropy models: one developed by NIST (National Institute of Standards and Technology), one by Jesper Johannson, (who wrote the "Great Debates: Passwords vs. Passphrases" series), one by CE Sharon and the Perfect Entropy Model.

Read more here.

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