Simple Text Crypt

This app does not claim any permissions, so you can trust that it cannot send

any of your private data to anyone.

Messages produced by this app are secure and, for example, can be

confidently sent over a network. It uses AES in GCM mode with no padding for

encryption. It uses Argon2 and a random Salt to derive a secure key from the

entered passphrase.

This is a very powerful encryption. It also encrypts its settings before storing

them on the device.

However, the app might be vulnerable to some attacks. Although it is secure

enough to stand attacks from non-expert crackers, e.g. normal users,

should not be used for serious data encryption.

Upgrading from 4.x to 5.x

The encryption of the settings is changed. The app should be able to detect the

old settings and upgrade them with the new encryption algorithm. However, it's

a good idea to back-up your passphrase . (Well, it's generally a good idea to

back-up encryption keys and passwords in a secure place).

If the app didn't work after upgrade, uninstall and install it again.