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ID: de.chiffry

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    Varies with device

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The description of Chiffry Secure Messenger

Chiffry is the first communication app with the quality label "IT Security made in Germany". This encrypted messenger allows you to send text and voice messages securely, share pictures, videos, contacts and locations confidentially and also make tap-proof phone calls.

- iOS


For encryption, Chiffry follows the BSI guidelines and uses the latest end-to-end encryption with 256-bit AES in GCM mode. All messages and telephone calls are encrypted on the sender's device and decrypted on the recipient's device. The encryption key is regenerated before each message or telephone call and is transmitted to the recipient according to the mailbox principle using modern elliptic curve cryptography (512-bit ECDH). In addition, all messages with 512-bit ECDSA signatures are forgery-proof and every user is identified thanks to encryption certificates. For comparison: online banks generally use 2,048 to 4,096-bit RSA encryption. The 512-bit EC encryption used by Chiffry corresponds to 15,500-bit RSA encryption. The effort to guess this key is at least 3.4 * 1038 times higher. (Sources: BSI TR-02102-1, TR-03111)


At Chiffry, data protection is a priority. The data transfer is carried out via the Chiffry communication servers. Those are located in envia TEL's high-performance data-centre, which is one of the most secure in Germany and meets the highest requirements for security, connectivity and availability. It is certified according to IT security standard ISO 27001 & management standard ISO 9001. Only telephone number and public keys for communication are recorded on the Chiffry server during registration. All messages remain on the server in an encrypted state until they are delivered to the recipient and are deleted after delivery or after 21 days at the latest. End-to-end encryption means that neither Chiffry employees nor third parties can access the content of these messages, as the encryption key is only located at the sender and recipient's premises to encrypt and decrypt information.


- Tap-proof encrypted phone calls
- Sending voice and short messages confidentially
- Share pictures, videos, contacts and locations confidentially
- Sending encrypted messages and notes
- Encrypted chat and group chat with up to 10 members
- Free phone calls via Internet

All smartphone users can install and use the basic version of this encryption app for free. In addition, users of this security app for mobile phones can make tap-proof encrypted calls with their smartphone and tablet free of charge.

The paid premium version includes significantly more security and comfort functions and offers extensions in the basic functions (including larger files, more group members, etc.). This version is suitable for private and business users who place particular emphasis on security or who want to use additional functions of the Premium version.
The business version is designed for public authorities and companies and includes special solutions such as communication via your own chiffry server as well as optional integration of your own corporate design, use of special smartphones with hardened operating systems and integration of other hardware components.

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Chiffry Secure Messenger Varies with device APK for Android Varies with device+

Version Varies with device for Android Varies with device+
Update on 2023-01-25
Installs 10.000++
File size 8.149.086 bytes
Permissions view permissions
What's new We update the app regularly to improve it. Download the latest version to get the latest features and fixes.

Changes in this version include:

- Better support for RTL Languages
- Support for Android Scoped Storage
- Auto add phonenumber for registration
- Improved permission handling for Android 10+

Versions history:

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