Russian Holidays - Cryptographic Day (Day of the Creation of the Russian Cryptographic Service)

Russian cryptographers celebrate their professional holiday on May 5 - Cryptographic Day in Russia It was on this May day that the first Soviet cryptography and encryption service was created The main mission of the intelligence service remains unchanged - information protection and measures to block unauthorized access to the state security system Common features of colleagues in the shop are high intelligence, excellent analytical skills, and the ability to “keep other people’s secrets” The work of a cryptographer has always been highly valued and well paid People who come up with their own coded language and can declassify other people's secret signs are a priori talented Cryptography began the day a person first received a letter He really didn't want his contents to become public Then the question arose about the authorship and authenticity of the message And thoughts on how to limit access to data Cipher signs appeared, and people began to comprehend the basics of secret writing (cryptography) The ancient Greeks, who took the “baton” from the Egyptians, especially distinguished themselves in this skill During the time of the pharaohs, strict orders reigned The carriers of information were slaves They shaved their heads, applied a message with permanent paint, and waited for their hair to grow back The “overgrown” messenger was sent to the addressee, who, for ease of reading, cut off the slave’s head We owe the appearance of the cryptographic key to Egypt Messages were written on papyrus paper, which was wound around a stick The tape was then rolled into a roll and sent to the recipient To read the letter, you needed a stick of the same diameter This was the key Julius Caesar improved the Egyptian prototype of the key He invented variable rod diameter During the time of Caesar, the simplest encryption method appeared Each letter was replaced in the text by the next one in alphabetical order The method worked only because at that time few people knew how to read and write Famous cryptologists of antiquity were Aristotle, Nero and Pythagoras The authorship of the first apparatus for encoding words belongs to Leonardo da Vinci The Louis dynasty was sensitive to the development of information decryption services Letters and numbers of plain text were replaced with signs, according to certain laws Religious and political leaders fled from the Inquisition and encrypted their works so that only a select few could read them, and scientists - to recognize the priority of the authorship of the discovery This is what Galileo did Shakespeare, Rabelais, and Edgar Allan Poe were considered great cryptanalysts Cryptography was the intellectual pastime of the court There was a real fashion for secret letters Poets loved ciphers and anagrams In Britain, the method of newspaper secret writing was popular On the front page of the newspaper, barely noticeable dots were placed under the letters, which showed which letters needed to be read in order to receive the message In the 16th century, the Vigenère cipher appeared, named after the French diplomat It was based on a table of alphabets; it could not be cracked for a long time Codebreakers were in the service of the Secret Chancellery, Freemasons, spies and diplomatic missions