Blog

OpenPGP Web Key Directory Explained

Written by Jiří Keresteš on 2019-08-01

pgp

If you ever tried to send an encrypted e-mail to someone you haven't met before, you know that getting the right public key can be a quite challenging task. Traditional OpenPGP key servers[1] are usually everything but useful in this case. In this post, we'll see how OpenPGP Web Key Directory[2] tries to solve this situation.

...

Embedding Application Data in Racket Programs

Written by Dominik Joe Pantůček on 2019-07-25

racket

As we have started Cryptoucan™ mass-production, we found out we need more and more supporting software. Little - or slightly larger - programs for testing the device during various stages of manufacturing, software for managing the logistics data, programs for engraving or something more ordinary like tools for flashing the firmware. All these programs typically require some data which is not included in the code and we wanted to embed this data in the compiled binaries. Read on to learn more about our neat solution in our favorite programming language.

...

Cryptoucan™ usage: Display Explained

Written by Lída Hrnčířová on 2019-07-18

cryptoucan

This week is all about the display of Cryptoucan™. In this blog post we're going to show you all the indicators, what do they mean and we will even introduce you to some scenarios that will be signaled by it. At the end of the post, you can watch our new video on this topic.

...

Cryptoucan™ usage: Handling e-mails in Outlook

Written by Lída Hrnčířová on 2019-07-11

cryptoucan

We've already showed you how to sign, encrypt and decrypt e-mails in Thunderbird e-mail client, now it's time for the same in Outlook. Read our article or watch the instructional video showing every step that we made for you.

...

Cryptoucan™ Manufacturing: LEDs Revisited

Written by Dominik Joe Pantůček on 2019-07-04

cryptoucan

With the next batch of more than 1000 PCBs that has just arrived, we started testing and found out that the biggest issue is - again - checking whether LEDs work and if their color is correct. Read on to see some interesting math with averages in vector spaces and statistics of cyclic values.

...