kryptos - A .NET core tool for cryptography.

Kryptos - A .NET Core tool for cryptography. A nifty CLI tool to achieve tasks like

• decoding a JWT token or
• generating a SHA-256 hash of a file or
• generating an UUID
• generating Message Authentication Codes etc..

.NET Core introduced the concept of .NET Tools which are special NuGet packages that contain a console application.

Tools hosted on NuGet can be installed easily using the dotnet CLI as follows

dotnet tool install --global kryptos

--global adds the tool to the PATH environment variable and can easily be invoked by just typing in the command

kryptos --help

Kryptos is a .NET Core Tool that helps with cryptographic tasks. It works both on Windows and Linux OS (with dotnet core v3.1 installed)

Kryptos - v0.0.5 has the following features

• UUID generation
• Base64, Base64Url encoding and decoding
• MD5 Hash
• SHA-1, SHA-256, SHA-384, SHA-512 Hash
• JWT decoding
• HMAC-SHA1, HMAC-SHA256, HMAC-SHA384, HMAC-SHA512, HMAC-MD5

Here are a few example of using kryptos

1. Generate Base64 encoded string

    kryptos base64 enc -t "The quick brown fox jumps over the lazy dog."
   

2. Decode Base64 encoded string

    kryptos base64 dec -t "VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZy4="
   

3. Generate SHA-256 hash of file

    kryptos sha256 hash -i .\ubuntu-20.04-desktop-amd64.iso
   

4. Decode a JWT token

    kryptos jwt dec -t eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IlZpamF5c2hpbnZhIEthcm51cmUiLCJpYXQiOjE1MTYyMzkwMjIsImF1ZCI6Imh0dHBzOi8vZ2l0aHViLmNvbS92aWpheXNoaW52YS9rcnlwdG9zIn0.ufklYra5bLYKM-FWnmxI0Tsw_ILmTIDK0cJ7ZkPfwfE
   

   Kryptos is under active development and new features are being added. Update to the latest version using the command below.

dotnet tool update --global Kryptos

The Kryptos project is available on GitHub. Feel free to contribute.