KG-13: Cryptotechs were taught that it would take 50,000 years to break the key on a KG-13 using state of the art techniques that were available at the time
KG81, 84, & 85
K1-17
KG27
KG-46
KG-207
KG-227-228
Cipher Machine 1923 - 1939
Cipher Machine 1939 - 1945
ENIGMA
ETCRRM
Iris Scanner
JADE
Improved Analog Japanese Purple
Japanese Navy RED Machine
HY-2
MYK 7A & KIV7
MYK15A
Cray Computer
Computers & the NSA
Telemetry Processing system
Telemetry Processing Center
Paper tape device
Numerals & Code Signals
Coded Telegram
Late War Signal Alphabet
Sigaba ECM
SIGSALY
Drum Cipher
Disk Cipher
NCB Cipher
Strip Cipher
Confederate Cipher Disk
Union Cipher Disk
Great Seal
Great Seal Gift
Great Seal Secret
KW-7
Vietnam Era 1960s
1970's
Cold War 1970's
1980's
Remembering COMSEC Hero
US Intercept Station
HFDF System
First published book on Cryptology
US Navy Bombe
Ziegler YMP M90
Protective Technologies
