About SRVB


What is a Cryptosystem?

Do you know how to tell a secret? And what does it have to do with Mathematics and Computer Science?

First of all: the need for secrecy is, indeed, so fundamental that we can safely say that it precedes Civilization, and even Humanity itself. Paleolithic hunters who would use sign language to communicate at distance without giving away their presence to their prays or predators can be said to use a form secret communication. However interesting, this example does not answer my previous questions.

From the the Greek words κρυπτός (kryptos) and γράφειν (graphein), meaning respectively secret’ and ‘writing’, cryptography is any technique for discriminately hampering the interpretation of messages (not the access to them), aiming at impede the awareness of their meaning by third parties (or adversaries), however aware they might be of their content itself, while still allowing the intended recipient to construe the original meaning, by providing them with a specific instruction for it, the so called the ‘key’.


Having its first documented uses been done in the Ancient Egypt, back at least in the XIX century BC, cryptography has turned into one of the several anonymous technological heroes of our daily lives. From banking services to social networks to the military and intelligence any information system that deals with any minimally private or sensible information relies heavily on cryptography. From a more philosophical perspective, since privacy is to be considered a core component of individuality, to the point that it is held as the twelfth Human Right, cryptography is an indispensable component of modern world, for it allows an increasingly complex lifestyle to coexist with a healthy balance between individuality and collectivity.

What is SRVB?

SRVB cryptography are asymmetric cryptosystems by Daniel Santana Rocha and Yuri da Silva Villas Boas, that is based on the Knapsack problem. Contrary to RSA cryptosystem, SRVB is abundant on private keys, making it virtually costless, and contrary to the elliptic curves cyptosystem, it is completely open-source, and very easy to understand, use and implement.

Those who want to dig into the technical details can do so through our paper and our  project on GitHub, and in our mailing list. Enjoy!


SRVB Campaign

SRVB cryptography is, thus, demonstrably simple and free, and, with your help, we may discover whether or not it is the first cryptosystem ever created to simultaneously be simple, free and reliable. By crowdfunding our campaign, you will contribute to offer a prize to whomever breaks SRVB, so that:

  1. in the absence of any winner, we will provide a very strong evidence of the reliability of SRVB;
  2. in the eventuality of a successful attempt of breaking SRVB, we will reward the person or institution who achieves that;
  3. in either way,  we will contribute to divulge and gather public interest to both theoretical and applicable knowledge within the mathematical fields of Algebra, Complexity, Cryptology;

More details on the Campaign Page.


In the condition of mathematicians and programmers, if not at a top expert level, we do have an overall good command of information security technology at an operational and level. We want you to have it too, and this can become true through the vulgarization of the first Simple, Free and Reliable asymmetric cryptography ever created, ie the ultimate goal of this campaign.

If you have read it to this point, you are probably interested enough on our content to like and follow us on MindsFacebook, Twitter, and our YouTube channel.


The Authors

We are very honored by your personal interest in knowing more about us!

daniel-santana-rocha          IMG-20160725-WA0002

Daniel Santana Rocha (left) is  a doctorate student at Brazilian National Institute of Pure and Applied Mathematics, is an awarded mathematics olympian.

Yuri da Silva Villas Boas (right) is an Applied Mathematics Bachelor by the Federal University of Rio de Janeiro, programmer at Toptal, and coauthor, developer and director of the campaign.

We warmly thank you for your attention, time and trust!