User-controlled decryption operations is an open-source (GPL-3.0-or-later) Android app by Erik Nellessen. The APK we host is 269 KB, it needs Android 4.4 or newer, and it declares 1 permission.
The file on this page is User-controlled decryption operations 0.1.5, 269 KB, and it installs on Android 4.4 and newer.
We compared the signing certificate of this build with the certificate recorded the first time de.nellessen.usercontrolleddecryptionoperations entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest inside the APK declares 1 permission, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is GPL-3.0-or-later. We took this build from F-Droid, and the source for this exact version is linked below.
The most recent release upstream is from Apr 6, 2019, over 7 years ago. It still installs; it is simply not being updated.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 0.1.5
- Size
- 269 KB
- Requires Android
- API 19
- Package
- de.nellessen.usercontrolleddecryptionoperations
- Signature checked on
- Sep 21, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-or-later
- Source code
- Source for this version
File SHA-256: cdf399505f4af06ed1d513877d1c8de2f0c3ee8a0216594affa94aeb2ba029c7
Signing certificate (SHA-256): 82d1b157635a4c916d113117db68622e0ab0f57073d096482c18a42c463d88df
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- NFC
