Cryptool

4.1
242 reviews
50K+
Downloads
Content rating
Everyone
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About this app

Cryptool wants to help you to protect the information that matter most to you. We don't hide anything that's going on under the hood, we show the algorithms and data input/output as it is.

This is a non-profit open source solution and we are not interested in your data. Anyway, we do not ask you to trust, we ask you to **block** the Internet access, **review** the code, or even **build** the app yourself.

Main features:

- Lightweight application.
- Modern UI. Material You + support to light/dark theme.
- Multiple encryption configurations as conversations.
- Multiple message sources.
- Manual. Handle the input and output of the communication yourself.
- LAN. Communication within the connected Local Area Network. It is forgotten when the app stops.
- File. Use two files for communication. You can auto-sync and share the files for real time communication.
- SMS. Use your SMS provider. This option could have cost depending the contract with your provider.
- Keystore.
- Multiple algorithms and encryption configurations.
- Interoperable encryption.
- Clipboard control.
- Export/Import:
- Custom code protection.
- Filter data.
- Access code protection:
- Forget/Reset.
- Change.
- Biometric identification.

Know more: https://github.com/nfdz/Cryptool
Updated on
Jul 28, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

4.3
230 reviews
Mr. Hitchens
June 28, 2021
Really good tool. Needs an update! Very useful and well designed. Recommend highly! PS, Instagram User...... seriously, if you don't understand how something works, that's YOUR fault! Read!
19 people found this review helpful
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3
December 9, 2020
Quite useless. No way to really decipher either message with an external source. Only useful for yourself which is kinda sad, as I wanted to use this to make puzzles for other people. Oh well.
22 people found this review helpful
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A Google user
April 11, 2020
👌👍👏 Thanks for implementing "bypassing Android Clipboard" for inserting password to Encryption tab from keystore tab. Now touching key icon in keystore copies it to the password field of encryption screen without the use of Android Clipboard thus, improving security. Thanks for creating backup/restore.
12 people found this review helpful
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nfdz
October 21, 2019
Thanks for the feedback! We are going to work in avoid clipboard and secure it for the next iteration. https://github.com/nfdz/Cryptool#roadmap If you need to migrate your old text, you still can use the old app downloading it from: https://github.com/nfdz/Cryptool/releases/tag/v1.2.0 (beware the old cipher has security issues)

What’s new

• New languages supported.
• New conversation search feature.
• Fix send long SMS issue.
• Fix stability issues.

App support

About the developer
Noé Fernández Llamas
nfdz@proton.me
Spain
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