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X-WR-CALDESC:On 1 June 1931\, Herbert O. Yardley's book\, The American B
lack Chamber was released. Yardley's work with the Black Chamber had e
nded in 1929 when the State Department funding for the program ceased. The
program's files were transferred to William Friedman with the Signal Inte
lligence Service (early predecessor of NSA). Yardley was out of a job and
ended up writing a book that was both immensely popular and brought him ha
rsh criticism.\n\nThe American Black Chamber was denounced by the U
.S. government as having given away American secrets - primarily secrets a
bout how and when cryptanalysis had been applied — not only against likely
adversaries\, but also against U.S. allies. This led to Public Law 37\, s
igned by Franklin D. Roosevelt in 1933\, criminalizing any such future exp
osure. \n\nLearn more about Yardley via the link below. And make sure to v
isit the Black Chamber/Yardley exhibit at the National Cryptologic Museum.
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DTSTART:20181104T020000
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RDATE:20201101T020000
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BEGIN:VEVENT
UID:d8723abc-e2db-4ea0-ae4a-2fea54a7b1cf
DTSTAMP:20240329T094328Z
DESCRIPTION:On 1 June 1931\, Herbert O. Yardley's book\, The American Bl
ack Chamber was released. Yardley's work with the Black Chamber had en
ded in 1929 when the State Department funding for the program ceased. The
program's files were transferred to William Friedman with the Signal Intel
ligence Service (early predecessor of NSA). Yardley was out of a job and e
nded up writing a book that was both immensely popular and brought him har
sh criticism.\n\nThe American Black Chamber was denounced by the U.
S. government as having given away American secrets - primarily secrets ab
out how and when cryptanalysis had been applied — not only against likely
adversaries\, but also against U.S. allies. This led to Public Law 37\, si
gned by Franklin D. Roosevelt in 1933\, criminalizing any such future expo
sure. \n\nLearn more about Yardley via the link below. And make sure to vi
sit the Black Chamber/Yardley exhibit at the National Cryptologic Museum.
DTSTART;TZID=America/New_York:20190601T000000
DTEND;TZID=America/New_York:20190601T235900
LOCATION:
SUMMARY:1931: Herbert Yardley's 'The American Black Chamber' was released.
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