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BlockPRISM enables encryption in a simple way for everybody without tradeoffs.
Felix Leupold
3 Team Members

Thank You!

We want to thank everybody, who helped us with a donation or by sharing the idea. The project will be continued. For further updates visit BlockPRISM.org.

BlockPRISM enables encryption in a simple way for everybody without tradeoffs.

Our goal is to offer encryption to everybody by creating simple-to-use tools that automate message encryption and integrate into your social networks seamlessly.

The NSA scandal showed that there is a need for secure communication. Although encryption technology has existed now for some time, it has not been widely adopted by the public, because it can be complicated. We want to solve this problem by implementing smart encryption tools that anyone can use easily.

Download BlockPRISM Chrome extension

BlockPRISM allows you to securely and seamlessly encrypt messages in your social networks and email without even having to think twice.

We have implemented a Chrome browser extension as a first prototype. The extension encrypts Facebook chats by default (see video). We are initiating this campaign to finish development and enable GMail encryption and mobile usage on iPhone and Android smartphones. Please help us spread the word and consider making a donation.

How it works

System Diagram

The Chrome browser extension enables encryption of Facebook messages and GMail emails with minimum interaction. Just install the extension and enter a passphrase, that’s all. The extension creates the necessary key pair in the background and shares the public key with your friends. Whenever you write a message, your friend’s public key is used to encrypt the message before it is sent. Received encrypted messages are decrypted with your private key in the background and shown. The extension will be ported to the Firefox and Opera browsers. Because most of the communication today is mobile, we want to create applications for your iPhone or Android too.

Supported platforms

How can we ensure the encryption works?

We use strong public private key encryption that is widely used (PGP) and proven. All code will be released as open source. Every programmer can see how it works and validate that the encryption is safe. We promise that the access to the applications will always be free. For advanced questions about encryption, have a look at our FAQ.

Who we are

We are a group of three software engineering students from the Hasso Plattner Institute in Germany and a mechanical engineering student from Stanford University. Our background is in encryption, web- and mobile development. We have successfully developed websites and iOS applications (http://epic.hpi.uni-potsdam.de/Home/HanaOncolyzer).


Carolyn Estrada
Stefan George
Felix Leupold
Thomas Klingbeil

Why do we need money?

BlockPRISM is our side project on which we work after hours. We would like to focus on BlockPRISM and offer it for free. Without your donations, this won’t be possible. Every donation is a validation for the need for simple encryption and a sign that people want to decide for themselves who can access their information, instead of leaving this decision to big, anonymous companies.

Thank you for your support!

Find This Campaign On
raised by 97 people in 14 days
23% funded
No time left
$10,000 USD goal
Flexible Funding This campaign has ended and will receive all funds raised.
Campaign Closed
This campaign ended on August 6, 2013
Select a Perk
  • $5USD
    Be a Supporter

    You are mentioned on the donation page on BlockPRISM.org. Thank you for your support!

    10 claimed
    Estimated delivery: August 2013
  • $10USD
    Beta Tester

    Get an invitation to our closed beta for the browser extension and Android App/iOS App and a BlockPRISM sticker to show your support.

    38 claimed
    Estimated delivery: September 2013
  • $25USD
    Wear our Campaign

    Get 5 invitations to our closed beta for the browser extension and Android App/iOS App. Also, you get a BlockPRISM T-Shirt!

    22 claimed
    Estimated delivery: September 2013
  • $75USD
    Beta Distributor

    Get a BlockPRISM T-Shirt and 20 beta invitations for each of our products.

    6 claimed
    Estimated delivery: September 2013
  • $350USD
    Extreme Supporter

    Everything above, plus an honorable mention on the Credits page of the browser extension and the mobile versions.

    1 out of 50 claimed
    Estimated delivery: September 2013
  • $1,000USD
    Get to know the Team

    An one hour Q&A session over Skype with the complete development team.

    0 out of 10 claimed
    Estimated delivery: August 2013
  • $5,000USD
    You name it!

    Want BlockPRISM for your favorite communication channel? We will try our best to provide a plugin for this one on top of the ones we are already implementing.

    0 out of 3 claimed
    Estimated delivery: January 2014
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