The red/black concept, sometimes called the red–black architecture[1] or red/black engineering,[2][3] refers to the careful segregation in cryptographic systems of signals that contain sensitive or classifiedplaintext information (red signals) from those that carry encrypted information, or ciphertext (black signals). Therefore, the red side is usually considered the internal side, and the black side the more public side, with often some sort of guard, firewall or data-diode between the two.
Red/black box
In NSA jargon, encryption devices are often called blackers, because they convert red signals to black. TEMPEST standards spelled out in Tempest/2-95 specify shielding or a minimum physical distance between wires or equipment carrying or processing red and black signals.[4]
Different organizations have differing requirements for the separation of red and black fiber-optic cables.
Red/black terminology is also applied to cryptographic keys. Black keys have themselves been encrypted with a "key encryption key" (KEK) and are therefore benign. Red keys are not encrypted and must be treated as highly sensitive material.[5]
Red/Gray/Blackedit
NSA Red-Gray-Black diagram
The NSA's Commercial Solutions for Classified (CSfC) program, which uses two layers of independent, commercial off-the-shelf cryptographic products to protect classified information, includes a red/gray/black concept. In this extension of the red/black concept, the separated gray compartment handles data that has been encrypted only once, which happens at the red/gray boundary. The gray/black interface adds or removes a second layer of encryption.[6]
black, concept, other, uses, black, black, concept, sometimes, called, black, architecture, black, engineering, refers, careful, segregation, cryptographic, systems, signals, that, contain, sensitive, classified, plaintext, information, signals, from, those, t. For other uses see Red black The red black concept sometimes called the red black architecture 1 or red black engineering 2 3 refers to the careful segregation in cryptographic systems of signals that contain sensitive or classified plaintext information red signals from those that carry encrypted information or ciphertext black signals Therefore the red side is usually considered the internal side and the black side the more public side with often some sort of guard firewall or data diode between the two Red black boxIn NSA jargon encryption devices are often called blackers because they convert red signals to black TEMPEST standards spelled out in Tempest 2 95 specify shielding or a minimum physical distance between wires or equipment carrying or processing red and black signals 4 Different organizations have differing requirements for the separation of red and black fiber optic cables Red black terminology is also applied to cryptographic keys Black keys have themselves been encrypted with a key encryption key KEK and are therefore benign Red keys are not encrypted and must be treated as highly sensitive material 5 Red Gray Black edit nbsp NSA Red Gray Black diagramThe NSA s Commercial Solutions for Classified CSfC program which uses two layers of independent commercial off the shelf cryptographic products to protect classified information includes a red gray black concept In this extension of the red black concept the separated gray compartment handles data that has been encrypted only once which happens at the red gray boundary The gray black interface adds or removes a second layer of encryption 6 See also editComputer security Secure by design Security engineeringReferences edit David Kleidermacher 2010 Bringing Android to military communications devices MIL HDBK 232A Red black engineering installation guidelines PDF 1988 Archived from the original PDF on 2007 07 14 Cabling for Secure Government Networks PDF Archived from the original PDF on 2012 05 19 McConnell J M 12 December 1995 NSTISSAM TEMPEST 2 95 Archived from the original on 2007 04 08 Retrieved 2007 12 02 Clark Tom 2003 Designing Storage Area Networks Addison Wesley Professional ISBN 0 321 13650 0 NSA Mobile Access Capability Package Version 2 1 26 June 2018 accessed 21 February 2021 nbsp This cryptography related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Red black concept amp oldid 1186686959, wikipedia, wiki, book, books, library,
