Quotes About Security

it can be mathematically proved that it is impossible for a cryptanalyst to crack a message encrypted with a onetime pad cipher. In other words, the onetime pad cipher is not merely believed to be unbreakable, just as the Vigenère cipher was in the nineteenth century, it really is absolutely secure

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 codes that are currently used to protect military information.

The fate of the Polish nation had depended on Rejewski, and he did not disappoint his country. Rejewski's attack on Enigma is one of the truly great accomplishments of cryptanalysis.

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 RSA, developed their encryption products with only these markets in mind.

Figure 6 The science of secret writing and its main branches.

the hotline between the presidents of Russia and America is secured via a onetime pad cipher.

Správné použití kvalitní Å¡ifry je velkou pomocí pro obÄ› komunikující strany, avÅ¡ak nekorektní zacházení se slabou Å¡ifrou m?že vyvolat velmi faleÅ¡ný pocit bezpe?í.

Ã…â"¢íká se, že zkratka NSA ve skute?nosti znamená "Never Say Anything

When Hermann Göring visited Warsaw in 1934, he was totally unaware of the fact that his communications were being intercepted and deciphered. As he and other German dignitaries laid a wreath at the Tomb of the Unknown Soldier next to the offices of the Biuro Szyfrów, Rejewski could stare down at them from his window, content in the knowledge that he could read their most secret communications.

first ever military cryptographic device, the Spartan scytale, dating back to the fifth century B.C. The scytale is a wooden staff around which a strip of leather or parchment is wound

Zimmermann employed a neat trick that used asymmetric RSA encryption in tandem with old-fashioned symmetric encryption.

The German military were equally unenthusiastic, because they were oblivious to the damage caused by their insecure ciphers during the Great War. For example, they had been led to believe that the Zimmermann telegram had been stolen by American spies in Mexico, and so they blamed that failure on Mexican security. They still did not realize that the telegram had in fact been intercepted and deciphered by the British, and that the Zimmermann debacle was actually a failure of German cryptography.

Jestliže nÄ›kdy platí, že nutnost je matkou invence, pak je rovn?ž možné, že ohrožení je matkou kryptoanalýzy.

Lidé zapojení do debaty o Å¡ifrování jsou vesmÄ›s inteligentní, ?estní a jsou pro depozici klí??, ale nikdy nemají více než dvÄ› tyto vlastnosti najednou.

The correct use of a strong cipher is a clear boon to sender and receiver, but the misuse of a weak cipher can generate a very false sense of security.

significance of the key, as opposed to the algorithm, is an enduring principle of cryptography. It was definitively stated in 1883 by the Dutch linguist Auguste Kerckhoffs von Nieuwenhof in his book La Cryptographie militaire: "Kerckhoffs' Principle: The security of a cryptosystem must not depend on keeping secret the crypto-algorithm. The security depends only on keeping secret the key.

One of the features of the Enigma machine was its inability to encipher a letter as itself, which was a consequence of the reflector. The letter a could never be enciphered as A, the letter b could never be enciphered as B, and so on.

The Vigenère cipher was called "le chiffre indéchiffrable," but Babbage broke it;

In June 1991 he took the drastic step of asking a friend to post PGP on a Usenet bulletin board. PGP is just a piece of software, and so from the bulletin board it could be downloaded by anyone for free. PGP was now loose on the Internet.

The best and most effective espionage service in the world belongs to the Vatican.

any reproach made by my mother, and even her slightest frown was a threat to my security: without her approval, I no longer felt I had any right to live.

This is the key to the enjoyment of assurance precisely because assurance is our assurance that he is a great Savior and that he is ours.

Notice what this means. Gospel assurance is not withheld from God's children even when they have not shown themselves to be strong. What

Sleep with me sleep with my dogs-