In that year, F. Karzhavin gets custody of officials of the Paris mission, which gets the job of an interpreter. It was there that he began his long-term friendship with the adviser NK Hotinskaya Embassy. Fedor Karzhavin was a merchant, writer, traveler. He was the first Russian visited the United States, Cuba and Martinique . To our deep regret, with a subject of our research, we are able to give only fragmentary and brief information about those individuals who contributed to the development of our cryptographic service. We hope that the interested reader can independently expand their knowledge about us these people. And yet, to more clearly highlight the figure of FV Karzhavin, we would like to quote some of his statements. So, in the letter of American parents in Moscow from September 1785 Karzhavin, talking about his travels, thinking about his future fate, wrote so much about the possible death of "Die no matter where it was all the same: we came from dust, dust live we am, and to dust shall return (the four elements that make up the edifice called the man should be scattered, and every one of them will join your primary source. Chemistry then I proved) ... "But then, reproaching his father that he has cursed his secret departure abroad for training, a lack of understanding of his works in the name of science, Fedor Karzhavin writes about his homeland, our human dignity, "you have deprived me of my friends, my Fatherland, my sovereign, my happiness, all my science you returned to nothingness; you have taken from me the honor, therefore, you have ruined me to the ground ... ".