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# Password-Entropy-Calculator
Calculates the relative strength of a password. This is accomplished by using several techniques. Primarily this relies on letter trigraphs, which check each set of 3 characters in a given password. This also calculates the entropy bits based on Claude Shannon's technique on determining the number of bits required to represent a set of characters and multiplying it by the length of the password. There is also a check to see if a password is contained in a list of common passwords.
As a bonus there's also a "Search Space" or (Total Possible Combinations) Calculator, inspired by <a href="https://www.grc.com/haystack.htm" target="_blank">GRC's Interactive Brute Force Password “Search Space” Calculator.
Built off of <a href="https://github.com/tests-always-included/password-strength" target="_blank">tests-always-included/password-strength</a>
This Calculates the relative strength of a password using several techniques. Primarily this relies on letter trigraphs, which check each set of 3 characters in a given password. This also calculates the entropy bits based on Claude Shannon's technique on determining the number of bits required to represent a set of characters and multiplying it by the length of the password and there's a check to see if a password is contained in a list of common passwords and as a bonus there's also a "Search Space" or (Total Possible Combinations) Calculator, inspired by <a href="https://www.grc.com/haystack.htm" target="_blank">GRC's Interactive Brute Force Password “Search Space” Calculator.</a>
![Password Entropy Calculator](https://raw.githubusercontent.com/AlecMcCutcheon/Password-Entropy-Calculator/master/Password%20Entropy%20Calculator%20.jpg)
Format: ![Alt Text](url)