create strong cryptographic passwords.
The sha1 password calculator pwcalc works as safely as a meat grinder: If you put in a pig and turn the crank, you will get minced meat. But pushing back the minced meat while turning the crank backwards, will not bring back the pig. That is quite secure.
This app runs locally without using the network. The source code is available on GitHub:
https://github.com/pmorjan/pwcalc-chrome
In contrast to other apps strong passwords are calculated and not just generated. No confidential data is stored and no special app permissions are required.
You chose a single secret word (your secret master password) and an alias for the service the password is needed for (the pig), e.g. mysecret + gmail.com. Next the cryptographic hash function sha-1 is applied to this combined word which at the end produces a strong unique password (the minced meat). This calculated password is then copied to the clipboard to be used wherever it is needed.
In a simplified form it works like this:
password =
secret word + alias | sha1 | base64
Although all this might seem complicated it is actually technically quite simple.
On standard macos x or Linux you can calculate the password in a terminal with existing commands:
echo -n "mysecretgmail.com" | shasum | xxd -r -p | base64
The calculated password is:
XmMvBXYLVWOh2a2e5VVUDXwZnGU=
(On Linux you might have to replace "shasum" by "sha1sum".)
You can Follow the below Step By Step procedure to install the SHA1 Password Calculator Chrome Extension to your Chrome Web browser.
It is the SHA1 Password Calculator Chrome extension download link you can download and install Chrome Browser.
Tags: Minced Meat , Standard Macos X , Secret Word Alias Sha1 , Calculated Password , Mysecret Gmail , Cryptographic Hash Function Sha1 , Strong Passwords , Strong Cryptographic Passwords , Xxd R P , Special App , Sha1 Password Calculator Pwcalc Works , Secret Word , Single Secret Word , Secret Word Alias , Sha1 Password ,
Generates strong, recoverable SHA1 password hashes from a master password
Nifty helper to hash passwords. Uses HMAC-SHA1.
Colorful password fields using SHA1 hash of your password. You will know if you typed the correct password before submitting.
A tool to safeguard your password security.
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