This tool allows you to test the strength of
Type a password in the text field on the left, and the
estimated password strength, suggestions, and
estimated crack times will be shown below.
Online/Throttling: Online attack on a service that
rate-limits password authentication attempts.
Online/No Throttling: Online attack on a service
that doesn't rate-limit, or where an attacker has
Offline/Slow: Offline attack. Assumes multiple
attackers, proper user-unique salting, and a slow
hash function with moderate work factor, such as
bcrypt, scrypt, or PBKDF2.
Offline/Fast: Offline attack with user-unique
salting but a fast hash function like SHA-1, SHA-256, or MD5. A wide range of reasonable numbers
anywhere from one billion to one trillion guesses
per second, depending on number of cores and
machines, and ballparking at 10B/sec.
Password strength tester.
Open Source: MIT-licensed.
Self-Contained: No external connections for assets,
social media sites, analytics, etc.
Can be used offline or even locally. Grab the source
code from the GitHub repository and go wild!
Copyright 2019 Paul Duncan
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