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voice cipher system

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  • Cipher disk — The Union Cipher Disk from the American Civil War was 3.75 inches (95 mm) in diameter and made of light yellow heavy card stock. It consisted of two concentric disks of unequal size revolving on a central pivot. The disks were divided along their …   Wikipedia

  • Secure voice — (alternatively secure speech or ciphony) is a term in cryptography for the encryption of voice communication over a range of communication types such as radio, telephone or IP. Contents 1 History 2 Analog Secure Voice technologies 3 Di …   Wikipedia

  • Stream cipher — The operation of the keystream generator in A5/1, a LFSR based stream cipher used to encrypt mobile phone conversations. In cryptography, a stream cipher is a symmetric key cipher where plaintext digits are combined with a pseudorandom cipher… …   Wikipedia

  • Mercury (cipher machine) — Mercury was a British cipher machine used by the Air Ministry from 1950 until at least the early 1960s. Mercury was an online rotor machine descended from Typex, but modified to achieve a longer cycle length using a so called double drum basket… …   Wikipedia

  • Combined Cipher Machine — CSP 1600, the replacement stepping unit to adapt the ECM Mark II to CCM The Combined Cipher Machine (CCM) (or Combined Cypher Machine) was a common cipher machine system for securing Allied communications during World War II and for a few years… …   Wikipedia

  • SIGSALY — exhibit at the National Cryptologic Museum In cryptography, SIGSALY (also known as the X System, Project X, Ciphony I, and the Green Hornet) was a secure speech system used in World War II for the highest level Allied communications. It pioneered …   Wikipedia

  • Spread spectrum — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

  • Gamelan — A gamelan is a musical ensemble of Indonesia typically featuring a variety of instruments such as metallophones, xylophones, drums, and gongs; bamboo flutes, bowed and plucked strings, and vocalists may also be included. The term refers more to… …   Wikipedia

  • break — I. verb (broke; broken; breaking) Etymology: Middle English breken, from Old English brecan; akin to Old High German brehhan to break, Latin frangere Date: before 12th century transitive verb 1. a. to separate into parts with suddenness or… …   New Collegiate Dictionary

  • List of Ace Combat characters — The following list is a collection of prominent characters from the Ace Combat series of video games by Namco. All information here is (A: Accurate to the most recent game in the series, B: From the latest point in the AC Timeline). Contents 1… …   Wikipedia

  • One-time pad — Excerpt from a one time pad In cryptography, the one time pad (OTP) is a type of encryption, which has been proven to be impossible to crack if used correctly. Each bit or character from the plaintext is encrypted by a modular addition with a bit …   Wikipedia

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