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Andrognito Can Encrypt and Hide Any File on Android

Everyone has something to hide. With smartphones becoming deeply integrated with each and every facet of our life, it’s only but natural that they’d contain sensitive data. And, as the recent iCloud breaches have shown us, some times it’s better to have private stuff on your device and within your control, instead of cloud storages that can be hacked remotely.

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Andrognito is an Android app that can hide and secure any file on your Android smartphone. The developer — Aritra Roy from Kolkata, India – named the app as a fusion of the words Android and Incognito. The app applies a 3 step process to hide and lock your files –
i) It randomly assigns a new name to the file and appends a period (‘.’) to the beginning of the file name to prevent it from being indexed by Android media library.
ii) It places the file in a wrapper called ADG container, and encrypts it using AES-256.
iii) It applies a strong password to the container, and renames it once again.

The algorithm used by Andrognito is device specific, so simply copying the Andrognito container (.adg) to a different device won’t work. However, on the same device, Andrognito encrypted files can persist through factory resets and rom changes. The only catch is that you shouldn’t delete the ADG files and the “Andrognito/Backups” folder.

Andrognito -Setup Page
Andrognito -Setup Page

Andrognito is pretty straight forward to use. You are presented with a brief tutorial slide when you launch the app for the first time. After that you are presented with the File Explorer, which allows you to select files that you want to hide. Applying AES encryption makes the file almost impossible be crack. However, it can take a fair amount of time. Hence, Andrognito also has a Flash mode, which skips the encryption, and simple repackages your content to hide it from your file manager. However, files in this mode may be viewable in other apps. Files hidden by Andrognito can be accessed from the ‘Files’ tab in the app. If you end up hiding a lot of stuff, you will find ability to filter based on file-type and add to Favourites certain files handy. Andrognito app itself is protected by a 4-digit pin.

Andrognito - Guide
Andrognito – Guide

The app has a couple of other tricks in its sleeve. The first of them is a fake Vault. You can set a dummy pin, which when entered will open a fake vault (with 0 files). This can obviously be handy if you have a particularly nosy significant other or parents. The other neat feature is to hide Andrognito itself. If you turn on the Invisible mode, the app will be removed from the app drawer. You will be able to launch it only by dialling your pin from the phone dialler. The app also prevents brute force attacks by automatically locking itself for 15 minutes after 3 failed attempts.

Andrognito - Select Files
Andrognito – Select Files

Andrognito is currently in beta, but worked without a hitch for me. Go ahead, and take it for a spin. There are other similar apps, but Andrognito strikes a nice balance between simplicity and security, and is completely free.

[ Download Andrognito ]

[ Image courtesy Scott Schiller ]

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Pallab De

Pallab De is a blogger from India who has a soft spot for anything techie. He loves trying out new software and spends most of his day breaking and fixing his PC. Pallab loves participating in the social web; he has been active in technology forums since he was a teenager and is an active user of both twitter (@indyan) and facebook .