What is wrong with tracy''s idea

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Reference no: EM131323272

Tracy Swallow has a bright idea for avoiding the need to store passwords securely. She suggests transforming the user's name with a key-driven cryptographic transformation using a systemwide "password key" and giving the result back to the user to present as a password. A user who wishes to log in simply presents his or her name and this password; the system can authenticate the user by again transforming the user's name with the password key to see if the result is the same as the presented password. Thus no central file of passwords is needed. What is wrong with Tracy's idea?

Reference no: EM131323272

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