andmeid? Krüpteeritud andmed võõrastele kättesaamatud Hoiab ära andmete lekkimist Andmeid saab kaitsta tugeva parooliga Sümmeetriline krüpteerimine Kui andmeid krüpteeritakse ja dekrüpteeritakse sama võtmega, siis on tegemist sümmeetrilise krüptogaafiaga Asümmeetriline krüpteerimine Andmeid krüpteeritakse ja dekrüpteeritakse erinevate võtmetega Kasutatakse kahte võtit — avalikku ja salajast võtit Avaliku võtme krüptograafia põhineb sellel, et avalik võti avalikustatakse, et oleks võimalik saata võtmepaari omanikule krüpteeritud infot Üks meetod: digitaalsed sertifikaadid Krüpteerimiseks kasutatav tarkvara Boxcryptor TrueCrypt PGPdisk AES Crypt DigiDoc Krüpto AES Crypt eelised ja puudused Mõeldud andmete pikkaajaliseks säilitamiseks Kasutaja jaoks väga lihtne ja kerge kasutada DigiDoc Krüpto eelised ja puudused
2018 Boolean Functions and their Cryptographic Criteria * Univeristy of Tartu, Estonia Lomonosov Moscow State University, Russia Contents 1. Introduction ..................................................................................................................................... 3 2. Boolean functions and their representations ................................................................................. 4 2.1 Truth table ............................................................................................................................... 4 2.1.1 Disjunctive normal form .................................................................................................. 4 2.1.2 Conjunctive normal form ......................................................................................
Some of the things you will learn in THE CODEBREAKERS • How secret Japanese messages were decoded in Washington hours before Pearl Harbor. • How German codebreakers helped usher in the Russian Revolution. • How John F. Kennedy escaped capture in the Pacific because the Japanese failed to solve a simple cipher. • How codebreaking determined a presidential election, convicted an underworld syndicate head, won the battle of Midway, led to cruel Allied defeats in North Africa, and broke up a vast Nazi spy ring. • How one American became the world's most famous codebreaker, and another became the world's greatest. • How codes and codebreakers operate today within the secret agencies of the U.S. and Russia. • And incredibly much more. "For many evenings of gripping reading, no better choice can be made than this book." —Christian Science Monitor THE ...
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