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https://github.com/vijayshinva/kryptos

A .NET core tool for cryptography.
https://github.com/vijayshinva/kryptos

base64url cryptographic-hash cryptography cryptography-tools dotnet dotnet-core global-tool hash hmac jwt md5 oid pfx self-signed-certificate subresource-integrity

Last synced: 15 days ago
JSON representation

A .NET core tool for cryptography.

Host: GitHub
URL: https://github.com/vijayshinva/kryptos
Owner: vijayshinva
License: mit
Created: 2020-11-14T09:32:27.000Z (about 4 years ago)
Default Branch: main
Last Pushed: 2020-12-05T09:28:55.000Z (about 4 years ago)
Last Synced: 2025-01-03T13:38:58.940Z (about 1 month ago)
Topics: base64url, cryptographic-hash, cryptography, cryptography-tools, dotnet, dotnet-core, global-tool, hash, hmac, jwt, md5, oid, pfx, self-signed-certificate, subresource-integrity
Language: C#
Homepage:
Size: 74.2 KB
Stars: 4
Watchers: 3
Forks: 2
Open Issues: 1
Metadata Files:
- Readme: README.md
- License: LICENSE

Awesome Lists containing this project

README

# kryptos
A .NET core tool for cryptography.

![.NET Core](https://github.com/vijayshinva/kryptos/workflows/.NET%20Core/badge.svg)
[![CodeFactor](https://www.codefactor.io/repository/github/vijayshinva/kryptos/badge)](https://www.codefactor.io/repository/github/vijayshinva/kryptos)
[![NuGet version](https://badge.fury.io/nu/Kryptos.svg)](https://badge.fury.io/nu/Kryptos)

## Overview
- [Features](#features)
- [Installation](#installation)
- [Usage](#usage)
- [Examples](#examples)
- [Contributing](#contributing)
- [License](#license)

## 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
- Subresource Integrity
- Cryptographic Object Identifier lookup
- Create self-signed certificates (PFX)
- Encryption and decryption using PFX
- Random Number Generator
- Zip file content information

## Installation

**Kryptos** is available as a .NET Global Tool and can be installed using the .NET Core CLI.

```
dotnet tool install --global Kryptos
```

For offline installation, download the [nuget package][nuget-package] into a folder and run the following command.

```
dotnet tool install --global Kryptos --add-source FolderWithKryptosNuget\
```

**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
```

## Usage

```
kryptos --help
```

## Examples

1. Decode Base64 encoded string
```
kryptos base64 dec -t "VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZy4="
```
2. Generate SHA-256 hash of file
```
kryptos sha256 hash -i .\ubuntu-20.04-desktop-amd64.iso
```
3. Decode a JWT token
```
kryptos jwt dec -t eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IlZpamF5c2hpbnZhIEthcm51cmUiLCJpYXQiOjE1MTYyMzkwMjIsImF1ZCI6Imh0dHBzOi8vZ2l0aHViLmNvbS92aWpheXNoaW52YS9rcnlwdG9zIn0.ufklYra5bLYKM-FWnmxI0Tsw_ILmTIDK0cJ7ZkPfwfE
```
4. Generate Subresource Integrity
```
kryptos sri hash -u https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css
```
5. Look up Cryptographic Object Identifier
```
kryptos oid -t 1.3.6.1.5.5.7.3.1
```
6. Generate a self-signed PFX certificate
```
kryptos pfx create -st www.contoso.com -kt password -o contoso.pfx
```
7. Encrypt text using a PFX certificate
```
kryptos pfx enc -ci contoso.pfx -kt password -t "The quick brown fox jumps over the lazy dog."
```

## Contributing
- Fork the repo on [GitHub][git-repo]
- Clone the project to your own machine
- Commit changes to ```vnext``` branch
- Push your work back up to your fork
- Be sure to pull the latest from "upstream" before making a pull request!
- Submit a Pull Request so that changes can be reviewed and merged

NOTE: By raising a Pull Request you grant the guardians of this project the necessary ownership or grants of rights over all contributions to distribute under the [chosen license](https://github.com/vijayshinva/kryptos/blob/main/LICENSE).

## LICENSE
[![license](https://img.shields.io/github/license/vijayshinva/kryptos.svg)](https://github.com/vijayshinva/kryptos/blob/main/LICENSE)
[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fvijayshinva%2Fkryptos.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fvijayshinva%2Fkryptos?ref=badge_shield)

[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fvijayshinva%2Fkryptos.svg?type=large)](https://app.fossa.com/projects/git%2Bgithub.com%2Fvijayshinva%2Fkryptos?ref=badge_large)

[git-repo]: https://github.com/vijayshinva/kryptos
[nuget-package]: https://www.nuget.org/packages/Kryptos