Posted on Mar 18, 2023
Honoring Genevieve Grotjan Feinstein, Cryptanalyst
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Genevieve Grotjan Feinstein was known for her flashes of insight that led to successes of the entire cryptanalytic team. In 1940, Ms. Grotjan made a breakthrough against the Japanese diplomatic system known as “Purple.”
She found consistent relationships between the ciphertext and the plaintext in the messages. Her work was critical to the success of the team that solved Purple. In 1944, while working on the Russian diplomatic system known as Venona, Ms. Grotjan Feinstein recognized that there were many instances of insecure use of the encrypted communications. This was the critical insight that resulted in the success of the team’s analytical effort. Genevieve Grotjan Feinstein was inducted into the NSA/CSS Cryptologic Hall of Honor in 2010.
She found consistent relationships between the ciphertext and the plaintext in the messages. Her work was critical to the success of the team that solved Purple. In 1944, while working on the Russian diplomatic system known as Venona, Ms. Grotjan Feinstein recognized that there were many instances of insecure use of the encrypted communications. This was the critical insight that resulted in the success of the team’s analytical effort. Genevieve Grotjan Feinstein was inducted into the NSA/CSS Cryptologic Hall of Honor in 2010.
Honoring Genevieve Grotjan Feinstein, Cryptanalyst
Posted from stationhypo.com
Cryptology
WWII World War Two
Japan
Russia
Posted 1 y ago
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PO1 William "Chip" Nagel
..."In 1943, Ms. Grotjan married Hyman Feinstein, a chemist at the National Bureau of Standards. After serving as a cryptanalyst and as a research analyst for over seven years, on May 4, 1947, Genevieve Grotjan Feinstein resigned from the government and later became a professor of mathematics at George Mason University.
Genevieve Grotjan Feinstein died in 2006 at the age of 93. Before his death in 1995, Hyman Feinstein established an award in cryptology within the Department of Mathematical Sciences at George Mason in honor of his wife."
..."In 1943, Ms. Grotjan married Hyman Feinstein, a chemist at the National Bureau of Standards. After serving as a cryptanalyst and as a research analyst for over seven years, on May 4, 1947, Genevieve Grotjan Feinstein resigned from the government and later became a professor of mathematics at George Mason University.
Genevieve Grotjan Feinstein died in 2006 at the age of 93. Before his death in 1995, Hyman Feinstein established an award in cryptology within the Department of Mathematical Sciences at George Mason in honor of his wife."
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PO1 William "Chip" Nagel good day Brother William, always informational and of the most interesting. Thanks for sharing, have a blessed day!
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