Consider yourself the Authentication Manager of an IT organization, and you see that things were done haphazardly in the past. Users may select from a set of 62 characters (lower/upper case alphabets and 10 numbers) for the password setup, and a password length of ten characters was specified. Consider a strong adversary that can guess 10,000 passwords in a single second. Calculate the likelihood that a password in your company will be properly guessed by an attacker in a one-year period for password lengths of 12, 14, and 16. Users may still select just 62 characters.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Consider yourself the Authentication Manager of an IT organization, and you see that things were done haphazardly in the past. Users may select from a set of 62 characters (lower/upper case alphabets and 10 numbers) for the password setup, and a password length of ten characters was specified. Consider a strong adversary that can guess 10,000 passwords in a single second.

Calculate the likelihood that a password in your company will be properly guessed by an attacker in a one-year period for password lengths of 12, 14, and 16. Users may still select just 62 characters. 

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