
The KG-84A and KG-84C are encryption devices developed by the United States National Security Agency (NSA) to ensure secure transmission of digital data. The KG-84C is a Dedicated Loop Encryption Device (DLED), and both the KG-84A/C are General-Purpose Telegraph Encryption Equipment (GPTEE). The KG-84A is primarily used for point-to-point encrypted communications via landline, microwave, and communications satellite systems. The KG-84C is an outgrowth of the U.S. Navy high frequency (HF) communications program and supports these needs. The KG-84A and KG-84C are devices that operate in simplex communication, half-duplex, or full-duplex modes. The KG-84C contains all of the KG-84 and KG-84A modes, plus a variable update counter, improved HF performance, synchronous out-of-sync detection, asynchronous cipher text, plain text, bypass, and European TELEX protocol. The KG-84 (A/C) is certified to handle data at all levels of security. The KG-84 (A/C) is a Controlled Cryptographic Item (CCI) and is classified when key (cryptography). Keyed KG-84 equipment assumes the classification level equal to that of the keying material used. ==Characteristics== ===KG-84 A/C physical characteristics=== *Height 7.8 in (198 mm) *Width 7.5 in (191 mm) *Depth 15 in (381 mm) *Weight 23 lb (10 kg) ===Data rate=== *KG-84 Up to 64 kbit/s synchronous and 96 Mbit/s asynchronous *KG-84A 256 kbit/s ===Power=== *24 V dc, 15 W *115 V ac *220 V ac ===Operating temperature=== 0 to 55 °C ===MTBF=== 69,000 hours ==External links== *[http://www.jproc.ca/crypto/kg84.html More info on KG-84]; see also [http://www.jproc.ca/crypto/kg84c.html]. *[http://www.fas.org/irp/program/security/_work/kg-84.html Information] NSA encryption devices
When was this first put into service? Is it obsolete? (it looks like it is, judging from the pictures) As of when? What crypto system did it use? User:Linas 16:18, 16 Apr 2005 (UTC) : If nobody here knows, you might consider posting a query to the "cryptocollectors" group on Yahoo!: [http://groups.yahoo.com/group/cryptocollectors/]. However, it's quite unlikely that the details of the algorithms used in the device are publically known (or will be publically known for a few decades still...). User:Matt Crypto 23:12, 16 Apr 2005 (UTC) ::According to the Navy Infosec page [https://infosec.navy.mil/ps/?t=infosecprodsservices/infosecprodsservices.tag&bc=/infosecprodsservices/bc_kg84a.html] they date back at least to 1986 and are no longer in production. It would seem they are still in use with legacy systems. At least one newer device, HAYFIELD, supports KG-84. [https://infosec.navy.mil/ps/?t=infosecprodsservices/infosecprodsservices.tag&bc=/infosecprodsservices/bc_uhay.html]. The jproc site [http://www.jproc.ca/crypto/kg84.html] says it could be used with a variety of fill devices which suggests it does not use the newer, longer 128-bit keys. Compare with the KG-40A entry at the Navy site. --User:ArnoldReinhold 11:59, 18 Apr 2005 (UTC)
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Words begining with KG-84:
KG-84
KG-84
KG-84
The KG-84A and KG-84C are encryption devices developed by the United States National Security Agency (NSA) to ensure secure transmission of digital data. The KG-84C is a Dedicated Loop Encryption Device (DLED), and both the KG-84A/C are General-Purpose Telegraph Encryption Equipment (GPTEE). The KG-84A is primarily used for point-to-point encrypted communications via landline, microwave, and communications satellite systems. The KG-84C is an outgrowth of the U.S. Navy high frequency (HF) communications program and supports these needs. The KG-84A and KG-84C are devices that operate in simplex communication, half-duplex, or full-duplex modes. The KG-84C contains all of the KG-84 and KG-84A modes, plus a variable update counter, improved HF performance, synchronous out-of-sync detection, asynchronous cipher text, plain text, bypass, and European TELEX protocol. The KG-84 (A/C) is certified to handle data at all levels of security. The KG-84 (A/C) is a Controlled Cryptographic Item (CCI) and is classified when key (cryptography). Keyed KG-84 equipment assumes the classification level equal to that of the keying material used. ==Characteristics== ===KG-84 A/C physical characteristics=== *Height 7.8 in (198 mm) *Width 7.5 in (191 mm) *Depth 15 in (381 mm) *Weight 23 lb (10 kg) ===Data rate=== *KG-84 Up to 64 kbit/s synchronous and 96 Mbit/s asynchronous *KG-84A 256 kbit/s ===Power=== *24 V dc, 15 W *115 V ac *220 V ac ===Operating temperature=== 0 to 55 °C ===MTBF=== 69,000 hours ==External links== *[http://www.jproc.ca/crypto/kg84.html More info on KG-84]; see also [http://www.jproc.ca/crypto/kg84c.html]. *[http://www.fas.org/irp/program/security/_work/kg-84.html Information] NSA encryption devices
KG-84
When was this first put into service? Is it obsolete? (it looks like it is, judging from the pictures) As of when? What crypto system did it use? User:Linas 16:18, 16 Apr 2005 (UTC) : If nobody here knows, you might consider posting a query to the "cryptocollectors" group on Yahoo!: [http://groups.yahoo.com/group/cryptocollectors/]. However, it's quite unlikely that the details of the algorithms used in the device are publically known (or will be publically known for a few decades still...). User:Matt Crypto 23:12, 16 Apr 2005 (UTC) ::According to the Navy Infosec page [https://infosec.navy.mil/ps/?t=infosecprodsservices/infosecprodsservices.tag&bc=/infosecprodsservices/bc_kg84a.html] they date back at least to 1986 and are no longer in production. It would seem they are still in use with legacy systems. At least one newer device, HAYFIELD, supports KG-84. [https://infosec.navy.mil/ps/?t=infosecprodsservices/infosecprodsservices.tag&bc=/infosecprodsservices/bc_uhay.html]. The jproc site [http://www.jproc.ca/crypto/kg84.html] says it could be used with a variety of fill devices which suggests it does not use the newer, longer 128-bit keys. Compare with the KG-40A entry at the Navy site. --User:ArnoldReinhold 11:59, 18 Apr 2005 (UTC)
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K
KA | KB | KC | KD | KE | KF | KG | KH | KI | KJ | KL | KM | KN | KO | KP | KR | KS | KT | KU | KW | KX | KY | KZ |Words begining with KG-84:
KG-84
KG-84
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