The Germans therefore took the clever step of using the day key settings to transmit a new message key for each message.
Diagonally polarized photons are in a quantum quandary when confronted by a vertical Polaroid filter.
The letters a and l are the most common in Arabic, partly because of the definite article al-, whereas the letter j appears only a tenth as frequently.
Ron Rivest, one of the inventors of RSA, thinks that restricting cryptography would be foolhardy: It is poor policy to clamp down indiscriminately on a technology just because some criminals might be...
Quantum cryptography would mark the end of the battle between codemakers and codebreakers, the codemakers emerging victorious, because quantum cryptography is a truly unbreakable system of encryption.
Não existe utilidade prática em saber que π é irracional, mas, se podemos saber, então certamente seria intolerável não saber.
Lyndon Johnson and Richard Nixon were guilty of unjustified wiretaps, and President John F. Kennedy conducted dubious wiretaps in the first month of his presidency.
In the 1970s, banks attempted to distribute keys by employing special dispatch riders who had been vetted and who were among the company’s most trusted employees.
Codebreakers are linguistic alchemists, a mystical tribe attempting to conjure sensible words out of meaningless symbols.
At the same time as acquiring knowledge, the Islamic civilization was able to disperse it, because it had procured the art of paper-making from the Chinese. The manufacture of paper gave rise to the p...
In the 1980s it was only government, the military and large businesses that owned computers powerful enough to run RSA. Not surprisingly, RSA Data Security, Inc., the company set up to commercialize R...
The construction of mathematical logic had become the arbiter of truth. This was the Pythagoreans' greatest contribution to civilisation - a way of achieving truth which is beyond the fallibility of h...
Histaiaeus shaved the head of his messenger, wrote the message on his scalp, and then waited for the hair to regrow. This was clearly a period of history that tolerated a certain lack of urgency.
Because a quantum computer deals with 1’s and 0’s that are in a quantum superposition, they are called quantum bits, or qubits (pronounced cubits). The advantage of qubits becomes even clearer when we...
Alan Turing was another cryptanalyst who did not live long enough to receive any public recognition. Instead of being acclaimed a hero, he was persecuted for his homosexuality. In 1952, while reportin...
A Navajo message could never be faked and could always be trusted.
„Kolem roku 1790, když byla ratifikována Listina svobod, mohl soukromě mluvit kdokoliv s kýmkoliv - s jistotou, jakou už dnes nemá nikdo - prostě tak, že popošel po cestě kousek od ostatních a podíval...
War, instead of finishing in 1945, would have ended in 1948 had the Government Code and Cypher School not been able to read the Enigma cyphers and produce the Ultra intelligence. During this period of...
The Third World War would be the mathematicians’ war, because mathematicians will have control over the next great weapon of war—information. Mathematicians have been responsible for developing the co...
If a message protected by quantum cryptography were ever to be deciphered, it would mean that quantum theory is flawed,