What Does a Cryptographer Do?
Cryptologist William F. Friedman writes "Basic Military Cryptography", "Advanced Military Cryptography", and "Military Cryptography", the latter is an extension of the "Principle of Cryptographic Analysis", becoming a senior army Textbooks for the course.
Friedman
(American cryptographer)
Right!
- Chinese name
- Friedman
- Country of Citizenship
- United States
- Occupation
- Cryptographer
- representative work
- Basic Military Cryptography
- Cryptologist William F. Friedman writes "Basic Military Cryptography", "Advanced Military Cryptography", and "Military Cryptography", the latter is an extension of the "Principle of Cryptographic Analysis", becoming a senior army Textbooks for the course.
- In August 1935, Major Allison Army replaced Friedman as the administrative director of the Communications Intelligence Service. Friedman continued to direct cryptographic work. The team he led deciphered Japan's "Purple Secret" in August, 1940. During World War II, he served as the director of the Communications Research Office of the Communications Intelligence Service. When the Secret Service of the Armed Forces was established in 1949, he was the Chief of the Technical Service. In 1952, Friedman served as technical adviser to the director of the National Secrecy Service and two years later as special assistant to the director. He has been a crypto analyst for the Department of Defense since 1947. Friedman retired in 1955, giving up all positions and remaining as a consultant. In 1956, the National Assembly paid Friedman $ 100,000 in compensation, compensating him for nine inventions from 1933 to 1944. Two were very confidential and no patent application was filed. There are four patent offices that deal with the secrets, three of which are about M-134-C transcoders, which is a rotary cipher machine; one is about M-228 transcoders. The other three have been published as patents: a Jefferson cylinder-type bar code cipher; M-325 transcoder, which is another rotary cipher, and a fax encryption system. In fact, at least five of these inventions have been ported from others' inventions. Friedman's theoretical research matches his actual deciphering activities. Both are enriched by his contribution to the periphery. He organized the chaotic cryptosystem and formulated a batch of understandable terms according to his classification. He edited the textbooks to train thousands of students. And the last point is that today, Friedman has tens of thousands of staff, interception stations all over the world, and a huge American crypto organization (except for the Naval Cryptography Department, which was created by Safford). Immediate descendants of a small department created by the War Department.
- Friedman is known by Americans as "the world's greatest cryptographer". This person is introverted and unmovable, but never assumes it. One of his characteristics was that he never acknowledged "impossible", and he successfully deciphered Japan's diplomatic code in August 1940. After deciphering the Japanese diplomatic code, the Japanese Ministry of Foreign Affairs and the diplomatic ties of the US diplomatic missions in the United States knew the Americans well.