A new documentary tells the story of the discovery of one of the most important cryptography papers of all times. We are talking about an extensive technical report written in German language and entitled “Kurzgefasste Darstellung der Auflösungsmethoden”. For some 80 years it has remained classified, part of the so called Gustave Bertrand WW2 archives. It was …
Continue reading ‘A New Documentary about WW2 Cryptanalysis of Enigma’ »
In 2004 I have published a paper [Crypto 2004, Santa Barbara] in which I explain the concept of the so called Bi-Linear attack on DES. The old attack was not extremely strong. It is possible to see that two conditions would be necessary for such an attack to somewhat work well in cryptanalysis of DES: There …
Continue reading ‘A Linear Annihilator Property and Strong Biases with Original DES S-boxes’ »
A shameful provocation and sad day for scientific research: 11 years after the original publication Craig Wright has managed to re-publish Satoshi’s original paper with his name on it.
There is abundant literature on the security of Data Encryption Standard (DES or 3DES). Today we have released a new way to attack this cipher, see Section 11 in here. Anyone who reads this paper should immediately see that the high confidence which have developed over decades in research community about our ability to design secure block …
Continue reading ‘A New Attack on Data Encryption Standard (DES)’ »
A bug which allows unlimited creation of coins was found and fixed in ZeroCash. It is a sophisticated and subtle security flaw. We read that: To exploit the counterfeiting vulnerability, an attacker would have needed to possess information found in the large MPC protocol transcript that was made available shortly after the launch of Zcash. …
Continue reading ‘ZeroCash was broken, and nobody have noticed’ »
On January 3rd we celebrate 10 years since bitcoin network started operation. Long live all crypto currencies, especially those which actually are real innovators, and bring new technology such as advanced crypto techniques to the market. Let a thousand crypto flowers bloom. P.S. It is also 20 years and 2 days after the introduction of …
A web page shows that many crypto currencies lack protection against 51% attacks. For example to double spend in Dash, one needs to pay only 14K$ per hour. To double spend in bitcoin private, 1000$ will suffice. And course benefits of double spending can easily outweigh the costs. In addition some of the higher numbers are questionable. There …
All owners of EOS must take these steps before June 1st, or they will lose their tokens [they will fail to transfer to the new blockchain]. US citizens are apparently unable to hold EOS tokens legally. 5 billion dollars is at risk of loss at the moment.
Written by UCL student Maxine Emuobosa: Beginners Guide. And here is another one made by UCL student Killian Davitt.
All you need to know in one page, see here.