Handy Dandy

Handy Dandy is a tool that helps visualize and work with data in different formats that are used in Bitcoin protocol such as private keys and mnemonics.

This project is 100% open source and is written in C#. By using .Net core and AvaloniaUI HandyDandy can run on all operating systems.

Quick guide

1. Select the data grouping option and the final output type from the options on top
2. Set the bits (0 or 1) manually by clicking on each button
3. When all bits are set, the result will be printed in the text-box at the bottom of the window
4. Copy the result

Getting started

Step 1: Preparation

You can ignore this step at your own risk and skip to step 2.
Since this project deals with sensative information such as private keys, mnemonics, etc. the safest approach is to run it on a clean and air-gapped computer. Easiest way of acheiving that is using a live Linux:

1. Download Ubuntu or any other Linux OS
2. Verify Ubuntu's iso (link)
3. Follow step 2 while you are still online
4. Disconnect network cable (to remain offline)
5. Burn that ISO on a DVD or could be a USB disk (link)
6. Boot into Ubuntu to run HandyDandy
7. After you are done, shut down Ubuntu and remove the medium used in step 5

Step 2: Download and build

If you cannot or do not want to build you can go to releases where the ready-to-run binaires are found for 3 different x64 operating systems: Windows, Linux and MacOS. the other two files named Source code.zip and Source code.tar.gz are the project's source code that GitHub automatically adds at that release version's commit.

To build HandyDandy:
If you have Visual Studio you can clone this repository and build the included solution file called HandyDandy.sln.
Building is also possible through these steps using command line:

1. Get Git: https://git-scm.com/downloads
2. Get .NET 5.0 SDK: https://dotnet.microsoft.com/download (see TargetFramework in HandyDandy.csproj for the required .net version in case readme wasn't updated)
3. Clone HandyDandy git clone https://github.com/Coding-Enthusiast/HandyDandy.git
4. Build using dotnet publish -c Release -r <RID> --self-contained true (replace <RID> with RID of the operating system you want to build for. e.g. win-x64 for x64 Windows or linux-arm64 for Linux x64 ARM)

Important notes:

• Remember to build the project using release configuration to benefit from compiler optimizations.
• .Net applications can be published as self contained which will increase the size of the binray by including the required framework in it. That helps running the application on any computer (like the live Linux explained above) without needing to install .Net separately. The size can be reduced by selecting the Trim unused assemblies option.
• This project can be built on and used on any operating system, use -r|--runtime <RUNTIME_IDENTIFIER> to specify OS with the correct RID.

Step 3: Run

If you have compiled HandyDandy as SCD or downloaded the provided binaries there is no need to download .Net Core, otherwise it has to be downloaded and installed on the system that needs to run HandyDandy.
HandyDandy can be run by using console/terminal command dotnet HandyDandy.dll for Linux, dotnet HandyDandy on MacOs and running the HandyDandy.exe on Windows.
Linux may require providing persmissions first (more info):

1. Provide execute permissions chmod 777 ./HandyDandy
2. Execute application ./HandyDandy

Contributing

Please first check out conventions for information about coding styles, versioning, making pull requests, and more.

Donations

If You found this tool helpful consider making a donation:
Legacy address: 1Q9swRQuwhTtjZZ2yguFWk7m7pszknkWyk
SegWit address: bc1q3n5t9gv40ayq68nwf0yth49dt5c799wpld376s