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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).
This separation effort became known as the Red/Black Concept. A 1958 joint policy called NAG-1 set radiation standards for equipment and installations based on a 50 ft (15 m) limit of control. It also specified the classification levels of various aspects of the TEMPEST problem. The policy was adopted by Canada and the UK the next year.
The Defense Red Switch Network (DRSN) is a dedicated telephone network which provides global secure communication services for the command and control structure of the United States Armed Forces. The network is maintained by the Defense Information Systems Agency (DISA) and is secured for communications up to the level of Top Secret SCI .
Barricade tape across a door in Japan. Barricade tape is brightly colored tape (often incorporating a two-tone pattern of alternating yellow-black or red-white stripes or the words "Caution" or "Danger" in prominent lettering) that is used to warn or catch the attention of passersby of an area or situation containing a possible hazard.
A protective distribution system (PDS), also called protected distribution system, is a US government term for wireline or fiber-optic telecommunication system that includes terminals and adequate acoustical, electrical, electromagnetic, and physical safeguards to permit its use for the unencrypted transmission of classified information.
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Red-black or Redblack may refer to: Ottawa Redblacks, a Canadian football team; Red/black concept, a concept in cryptography; Red-black striped snake, a colubrid snake; Red–black tree, a type of self-balancing binary search tree used in computer science
Oil prices bounced around quite a bit in 2024. They rallied more than 20% at one point -- topping $85 per barrel -- before cooling off toward the end of the year. Oil was recently below $70 a ...