Werner Liebknecht

Werner Liebknecht (born 1 June 1905 in Waltershausen) was a German engineer who held the rank of Beamter at Referat Wa Prüf 7 of the Waffenamt during World War II. He was responsible for the design and development of many of the cryptographic devices used by German Armed Forces during World War II, including the cipher teleprinter attachment, the SZ 40 and the Siemens and Halske T52 secure teleprinter.