faster minikey generator for Casascius keys

Please read all this document before to use the program


To clone the repository:

git clone

don’t forget change to the minikeyg directory

cd minikeyg

How to build

Just compile:



This program only have a few possibles arguments

./minikey -u 

the -u option is for generate keys without the byte verification, u stand for unverified keys, if you don’t specify the keys generated will be always valid with the byte verification.

./minikey -s 22

the -s 22 or -s 30 option is for generate only keys of the specified size, s stand for size, if you don’t specify this option the default value is 22

./minikey -m SECUN34uVQKk3UkMBAiTLSoLTUWfwS

the -m option is for specify a star key this string need to fit in 22 or 30 characters m stand for minikey, if you don’t specify this option the star value is chossen randomly

./minikey -a 23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz

the -a option is for specify the alphabet to be use I hear that the Series 2 Coin don’t have number 1 in his minikey, if you don’t specify this optin the defaul alphabet is 123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz

./minikey -t 2

the -t option is for specify the thread number, default number of threads is 1.

Of course you can use all the option together to fit you needs.

Just a key generator

This program is just a generator, this generator is already build in keyhunt

You need redirect the output og this program to brainflayer please check

Free Code

This code is free of charge, see the licence for more details.

This is a hobby for me but is still a lot of work.


This version is still a beta version, there are a lot of things that can be fail. And absoluly there are some bugs


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All the donations will be use only for two things:

  • Buy coffee to develop from dusk till dawn
  • Get an affordable desktop computer with decent GPU, not highend, just to start the GPU version of all my programs


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