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’ »
George Soros decided in his old days to pick up a new fight. Let us be clear about who is George Soros. This man represents simultaneously what is the best and what is possibly the worst, inside our barely democratic Western pseudo-liberal but generally still rather free world (for now). Wisdom and great intelligence, great sensibility …
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 …
Spontaneous discrete protest movement of an individual against the mafias which are in charge of cyber-security, cryptography research and education at large worldwide. Students asked me what is my protest against and I have responded: It is against hate. All the hate you receive because you are different and you don’t have the same ideas …
I have written an elementary tutorial and a first proof of concept about how to backdoor a block cipher in a quite general setting. Potentially it applies to any block cipher. Success is not guaranteed though, see the paper. ADDED 2 JAN 2019: a new paper shows that invariants of higher degree are substantially more powerful. …
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 …
These companies (Facebook, Google, etc) known as Internet Giants violate our privacy everyday and they have corrupted our minds and our economy worldwide. They have built a totalitarian dystopian future which is here already, where humans and business alike are enslaved by a digital mafia which aims at controlling and taxing the whole global economy through mass surveillance and …