Image Lock PEA - Encryption of Pictures, Fotos, Images

Image Lock PEA protects photos, drawings, and documents with a password. Thanks to the integrated viewer the images are never stored unencrypted on the hard disk, but are held only in the memory.

Opened image in Image Lock PEA Password dialog to open the Image Lock PEA


Main Features

Privacy Protection

Confidentiality through On-the-fly encryption: The content is decrypted only when requested and only in memory, never on disk.

Cloud Support

Save your calendars in the cloud and upload new versions using several cloud providers. All data remain encrypted during this process.

Authenticated Encryption

Protects the integrity of the data by an authenticated encryption. This guarantees that the data has not been manipulated.

Key File

Add a second factor besides the password and protect your data additionally with a key file. Store this key file wherever you want.

Encryption at rest

Separate rarely used data from data in daily use, store them in extra files, and define customized security levels for each type of data.

Additional Features

  • penguen  window  apple  Platform independent: Runs on all systems with a Java runtime environment

  • lock  Uses a memory-hard key derivation function that defends custom-hardware attacks

  • wrench  Adjustability for colors, font sizes

  • c as code  All source code is open source, including the libraries used

  • chart  Measures the quality of new passwords during input by a password strength meter. Indicates their strength by colored bars

  • shuffle  Combines System Entropy with its own Entropy Source

  • table  Offers character tables to enlarge the character set of passwords

The program is small and consists of a single archive file. Installation is not required.

Encrypted Images

Because all documents can be easily converted in image formats like png, bmp, gif or jpg, the Image Lock PEA is also suitable to display all sorts of documents with a little more effort. You can use for example the PeaFactory's extra menu to convert pdf files into images which can than be encrypted with the Image Lock PEA.

Image Lock PEA uses functions to derive the key from the password, that protect against attackers with a high budget (availability of ASICs, FPGAs).
The authenticated Encryption (EAX mode) ensures the integrity and authenticity in addition to confidentiality.
The Image Lock PEA offers the possibility to export the encrypted images unencrypted. Different images can be managed by one PEA and can be encrypted with different passwords.
Since version 1.0 you can encrypt several images, but for performance reasons, Image Lock PEA is still not suitable for managing a large number of images.

While for some people encryption is generally associated with "terrorism", the obvious association with encrypted images is probably (child) pornography. It can not be excluded that the Image Lock PEA is also used for such purposes. But to renounce the encryption of all images is neither realistic nor a sensible approach. Patriarchal structures can not be solved with technology (or their renunciation).

Version 1.4

Key Derivation Function: Catena-Dragonfly, Argon2
Cipher (EAX-Mode): Threefish, AES-256, Serpent
Hash Function: Blake2b, SHA-3, SHA-512

Password dialog to open images Image Lock PEA

How to use

Start the Jar Archive

You need OpenJDK, Java Runtime Environment (JRE) or something similar. On most systems there is at least one available.
These PEAs are single Java jar archives, a file with the extension "jar". If you are familiar with jar archives, you can skip the following part.

Linux, BSD systems and Mac OS and other UNIX like systems: unpack the compressed download file (tar or unzip), store it for example in your home folder, change in the directory in konsole and type: java -jar YOUR_ARCHIVE.jar or try to double click the file
Windows: Normally you can open the jar archive just by a double click. But sometimes other programs overwrites this possibility and instead unpack the jar archive. In this case you can change the default program to open a jar archive or use the terminal, change in the directory of your archive and type java -jar YOUR_ARCHIVE.jar or try to double click the file windows_start_helper.bat

Initialization: First Start

The first time you start the Image Lock PEA, the program will initialize. You are asked for a password and an image file or a directory that contains image files. You can reset the password later in the menu.

Thanks to all who have improved, tested or reviewed Image Lock PEA or other PEAs.