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Description
English: "The TSEC/KL-7, Electromechanical Literal Cipher Machine, a crypto-equipment long in use by the U.S. and its Allies…"
Date
Source TEMPEST: A Signal Problem
Author National Security Agency
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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.

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Date/TimeThumbnailDimensionsUserComment
current10:14, 12 August 2018Thumbnail for version as of 10:14, 12 August 2018896 × 1,015 (243 KB)SunmistUser created page with UploadWizard

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