DST meaning in Computing ?

Answer:

What is Digital Signature Transponder mean?

The Texas Instruments digital signature transponder (DST) is a cryptographically enabled radio-frequency identification (RFID) device used in a variety of wireless authentication applications. The largest deployments of the DST include the Exxon-Mobil Speedpass payment system (approximately 7 million transponders), as well as a variety of vehicle immobilizer systems used in many late model Ford, Lincoln, Mercury, Toyota, and Nissan vehicles.

The DST is an unpowered "passive" transponder which uses a proprietary block cipher to implement a challenge–response authentication protocol. Each DST tag contains a quantity of non-volatile RAM, which stores a 40-bit encryption key. This key is used to encipher a 40-bit challenge issued by the reader, producing a 40-bit ciphertext, which is then truncated to produce a 24-bit response transmitted back to the reader. Verifiers (who also possess the encryption key) verify this challenge by computing the expected result and comparing it to the tag response. Transponder encryption keys are user programmable, using a simple over-the-air protocol. Once correctly programmed, transponders may be "locked" through a separate command, which prevents further changes to the internal key value. Each transponder is factory provisioned with a 24-bit serial number and 8-bit manufacturer code. These values are fixed, and cannot be altered.

reference

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Disk Self Test	Computing
Data Security Technician	Computing
Department of Science Technology	Computing
Data Science and Technology	Computing
Data Source Type	Computing
Data Storage Technology	Computing
Distributed Spam Trap	Computing
Digital Signature Transponder	Computing
Design Simulation Technologies	Computing
Direct Stream Transfer	Computing
Data Summary Tape	Database Management
Wain (scanner Spec) Data Source Dll (win)	File Type
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Distributed Spam Traps	General
Driver Safety Training	General
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Dynamic Stress Test	General
Dakota Sport	General
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Direct sales team	General
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Dead Spot Terminator	General
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Drivers Skill Trainers	Military and Defence
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Dutch Standards Target	Softwares
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Daily Swing Top	Sports
Defense and Special Teams	Sports
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Dkoro Standard Time	Time
Daylight-savings Time	Time
Danish Standard Time	Time