GitHub - andreimerlescu/entpassgen (original) (raw)

Entropy (focused) Password Generator

Open/Source/Insights @entpassgen Go Package @entpassgen

This project demonstrates pure Go functionality as it does not use anything but the standard library. The purpose of entpassgen is to offer the ability to generate new passwords, but introduce the concept of entropy to the equation when generating new passwords. The package relies on crypto/rand to generate random numbers and uses rune, which makes it compatible with multiple languages, countries and use-cases.

Getting Started

You can either clone the repository, or install the package directory. This repository depends on:

• Go 1.22.5+

Clone the repository, build then install

git clone git@github.com/andreimerlescu/entpassgen.git cd entpassgen make install # OR RUN THESE 4 ⬇︎⬇︎⬇︎⬇︎ go build -o entpassgen entpassgen.go sudo mv entpassgen /usr/bin/entpassgen chmod +x /usr/bin/entpassgen entpassgen -h

Install using Go

go install github.com/andreimerlescu/entpassgen@latest entpassgen -h

Download the binary and move

curl -o ./entpassgen -s https://github.com/andreimerlescu/entpassgen/releases/download/v1.0.0/entpassgen.linux-amd64 chmod +x entpassgen sudo mv entpassgen /usr/bin/entpassgen entpassgen -h

Special Instructions for Windows Users

Clone the repository, build then install

git clone git@github.com/andreimerlescu/entpassgen.git cd entpassgen go build -o entpassgen.exe entpassgen.go entpassgen.exe -h

Install using Go

go install github.com/andreimerlescu/entpassgen@latest entpassgen.exe -h

Download the binary and move (run as Administrator)

New-Item -ItemType Directory -Force -Path C:\bin setx /M PATH "%PATH%;C:\bin" Invoke-WebRequest "https://github.com/andreimerlescu/entpassgen/releases/download/v1.0.0/entpassgen.windows-amd64.exe" -OutFile c:\bin\entpassgen.exe entpassgen.exe -h

Use Cases

This utility is designed to be used in many different kind of use cases. It's stable and intended to set it and forget it. The help menu is your friend.

$ which entpassgen /usr/bin/entpassgen

$ entpassgen -h Usage of entpassgen: -E string Define exclude symbols in new password -L Do not use lowercase characters in new password -N Do not use numbers in new password -S Do not use symbols in new password -U Do not use uppercase characters in new password -W string Separate words with these possible characters (default "!@#$%^&*()_+1234567890-=,.></?;:[]|") -a Generate new passwords to get average entropy, min entropy and max entropy calculated for options -e string Minimum entropy value to accept in new password (default "avg") -j JSON formatted output -k int Quantity of passwords to generate when calculating average entropy (default 100000) -l int Character length in new password (default -1) -q int Quantity of passwords to generate (default = 1) (default 1) -s string Define acceptable symbols in new password (default "!@#$%^&*()_+=-[]\{}|;':,./<>?") -t TEXT formatted output (default) (default true) -w Use words (ignores -U -L -S -E -N -s)

Generate 1 New Password (Defaults)

$ entpassgen uLbirj64,oPDaO5^&uLbirj64,oPDaO5^&

Generate 1 New Password (JSON Output)

$ entpassgen -j | jq '.' { "length": 17, "uppercase": true, "lowercase": true, "digits": true, "symbols": true, "value": "v>s81|/7:UmrzKXE{", "sample": { "limit": 100000, "average": 66.54055868500511, "recommended": 68.01371349313044, "min": 49.486868301255775, "max": 69.48686830125578 }, "entropy": { "score": 69.48686830125578 } }

Generate Bogus Hebrew Words

$ entpassgen -L -U -N -S -s "אבגדהוזחטיכלמנסעפצקרשת" -l 12 -q 5 גקגתתעשנפכט שבגדעהתלנמ כדעפמכלכחת כגטששתחטצת טכלננמנסא

Generate Random Number (9 digits long)

$ entpassgen -L -U -S -l 9 804799183

Generate Random String (A-Za-z0-9 only)

$ entpassgen -S ZxZ8zOoKym8qDdk07

Generate 10 Random Passwords (Defaults)

$ entpassgen -q 10 r<GcVng4W$iA@JQ#
x3Q^MT4q2Xmp,ly>G t!LH7uvnNT9aiQDD> ywEaYRpl\CWv;Jh52 Ebfh1sHNao2HwM8>u ,XTG@vUx2V{y0:7TC ;4W^w]E:t|ZqJWnU X(og^y^3nhRfq=7j OcZSm[#>I.WjU,o>5 w:ng1H+jNtrL!2ETr

Generate Random Password (memorable words)

$ entpassgen -w -l 3 misserve(kinematographic]daunii4

Analyze Strong Passwords

$ entpassgen -w -a Entropy Report: Samples: 100000 Length: 5 Uppercase: true Lowercase: true Digits: true Symbols: true Use Words: true Average: 221.935 Minimum: 141.402 Maximum: 328.852 Recommended: 275.393

$ entpassgen -a
Entropy Report: Samples: 100000 Length: 17 Uppercase: true Lowercase: true Digits: true Symbols: true Use Words: false Average: 66.534 Minimum: 53.487 Maximum: 69.487 Recommended: 68.010

Analyze Strong Passwords with 1 Billion Samples (JSON output)

NOTE: This may take a long time to run!

$ entpassgen -k 1000000000 -a -j Calculating ... 22.4s -

Once completed, the line will clear and the results will show:

{ "length": 17, "uppercase": true, "lowercase": true, "digits": true, "symbols": true, "sample": { "limit": 1000, "average": 66.62700662609565, "recommended": 68.05693746367572, "min": 57.977093296928835, "max": 69.48686830125578 }, "entropy": {} }