Kryptor is a simple, modern, and secure file encryption and signing tool.
It aims to be a better version of age and Minisign to provide a leaner, user friendly alternative to GPG. Kryptor uses strong, fast, and modern cryptographic algorithms, offering post-quantum security. It also addresses security limitations of tools like age and Minisign.
Unlike most tools, Kryptor limits metadata by using an indistinguishable from random encrypted file format. Encrypted files have no identifiable headers and are randomly padded. File names can also be encrypted.
This is free and open source software.
Key Features
- Encrypt multiple files/directories with a passphrase, symmetric key, or asymmetric keys.
- Encrypt to multiple recipients for sender authenticated, one-way file sharing.
- Encrypted files are indistinguishable from random. File names can also be encrypted.
- Create and verify digital signatures, with support for an authenticated comment and prehashing.
- Small public keys. Private keys are encrypted for protection at rest.
- UNIX style passphrase entry and random passphrase generation.
- Pre-shared keys can be used for post-quantum secure key exchange.
- Security:
- ChaCha20-Poly1305 for authenticated encryption, with the padding fix for key commitment.
- Argon2id for password-based key derivation.
- BLAKE2b for hashing, keyed hashing, and key derivation.
- X25519 for key exchange.
- Elligator 2 for hiding ephemeral public keys.
- Ed25519 for digital signatures.
- Privacy:
- Runs locally on your computer. No personal data is ever collected or sent to anyone.
- Runs offline.
- Cross-platform software – runs under Linux, macOS, and Windows.
Website: www.kryptor.co.uk
Support: GitHub Code Repository
Developer: Samuel Lucas
License: GNU General Public License v3.0
Kryptor is written in C#. Learn C# with our recommended free books and free tutorials.
Related Software
| CLI File Encryption Tools | |
|---|---|
| SOPS | Editor of encrypted files |
| age | Simple file encryption tool |
| GnuPG | Implementation of the OpenPGP standard |
| Sequoia PGP | Comprehensive OpenPGP implementation |
| horcrux | File splitter with encryption and redundancy |
| rage | Simple encryption tool using the age format |
| Kryptor | Simple, modern, and secure file encryption and signing tool |
| Picocrypt | Very small (hence Pico), very simple, yet very secure encryption tool |
| fscrypt | Go tool for managing Linux filesystem encryption |
| enc | Designed as a modern, approachable alternative to GnuPG |
| ccrypt | Tool for encrypting and decrypting files and streams |
| Encpipe | Billed as the simplest encryption tool in the world |
| Volaris | Encryption tool designed to prioritize privacy and security |
| eddy | Simple and fast CLI file encryption |
| Xecrets Cli | AxCrypt compatible encryption tool |
| nacrypt | Simple and easy-to-use file encryption utility |
| v02enc | Symmetric encryption for multiple recipients |
| rsecure | AES-GCM file encryption and decryption tool |
| PurrCrypt | Fur-ociously secure encryption tool |
Read our verdict in the software roundup.
 Explore our comprehensive directory of recommended free and open source software. Our carefully curated collection spans every major software category.This directory is part of our ongoing series of informative articles for Linux enthusiasts. It features hundreds of detailed reviews, along with open source alternatives to proprietary solutions from major corporations such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. You’ll also find interesting projects to try, hardware coverage, free programming books and tutorials, and much more. Discovered a useful open source Linux program that we haven’t covered yet? Let us know by completing this form. |