Homepage Crypto Index Enigma Hagelin Fialka Siemens Philips Nema Racal Motorola STK Transvertex Gretag HELL Telsy TST Mils AT&T Tadiran USA USSR UK Voice Hand Mixers Phones Spy sets Burst encoders Intercept Covert Radio PC Telex Agencies Manufacturers Donate Kits Shop News Events Wanted Contact About Links KTP-3 Key-Tape Puncher - wanted item KTP-3 was a machine for the generation and duplication of random punched paper key-tapes, developed in the late 1950s by Standard Telefon og Kabelfabrik A/S (STK) in Norway.   The machine was designed to create the key tapes for the ETCRRM, the SELMA and the TCE-160. It created two paper tapes simultaneously, and had provisions for verifying the randomness of the generated cipher stream. It is currently unknown how the random key stream was generated (random or pseudo-random). The image on the right shows a typical KTP-3 machine. At the front right are two supply reels with blank paper tape. Once they are punched simultaneously at the center, they are wound up on the two pick-up reels at the left.    Click the image above for a closer look. Similar machines were built by Mils in Austria and Philips in The Netherlands. If you have any further information about this machine, please contact us. This page is a stub   References Leif Nilsen, NISnet Kick-off Thales Norway AS, PowerPoint presentation. 10 October 2007. Retrieved June 2012. Further information Other STK cipher machines About STK, the manufacturer Mixer cipher machines Any links shown in red are currently unavailable. If you like this website, why not make a donation? © Copyright 2009-2013, Paul Reuvers & Marc Simons. Last changed: Sunday, 13 April 2014 - 11:26 CET