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- Digital_signature_transponder abstract "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.".
- Digital_signature_transponder wikiPageExternalLink blocker.pdf.
- Digital_signature_transponder wikiPageExternalLink bono.pdf.
- Digital_signature_transponder wikiPageID "2858982".
- Digital_signature_transponder wikiPageLength "4860".
- Digital_signature_transponder wikiPageOutDegree "20".
- Digital_signature_transponder wikiPageRevisionID "580093454".
- Digital_signature_transponder wikiPageWikiLink Aluminium_foil.
- Digital_signature_transponder wikiPageWikiLink Block_cipher.
- Digital_signature_transponder wikiPageWikiLink Category:Radio-frequency_identification.
- Digital_signature_transponder wikiPageWikiLink Challenge–response_authentication.
- Digital_signature_transponder wikiPageWikiLink Ciphertext.
- Digital_signature_transponder wikiPageWikiLink ExxonMobil.
- Digital_signature_transponder wikiPageWikiLink Feistel_cipher.
- Digital_signature_transponder wikiPageWikiLink Field-programmable_gate_array.
- Digital_signature_transponder wikiPageWikiLink Johns_Hopkins_University.
- Digital_signature_transponder wikiPageWikiLink Key_schedule.
- Digital_signature_transponder wikiPageWikiLink Key_size.
- Digital_signature_transponder wikiPageWikiLink Linear_feedback_shift_register.
- Digital_signature_transponder wikiPageWikiLink Message_authentication_code.
- Digital_signature_transponder wikiPageWikiLink Non-volatile_random-access_memory.
- Digital_signature_transponder wikiPageWikiLink RSA_Security.
- Digital_signature_transponder wikiPageWikiLink Radio-frequency_identification.
- Digital_signature_transponder wikiPageWikiLink Speedpass.
- Digital_signature_transponder wikiPageWikiLink Texas_Instruments.
- Digital_signature_transponder wikiPageWikiLink Vehicle_immobilizer.
- Digital_signature_transponder wikiPageWikiLink Weak_key.
- Digital_signature_transponder wikiPageWikiLinkText "Digital signature transponder".
- Digital_signature_transponder wikiPageUsesTemplate Template:Update.
- Digital_signature_transponder subject Category:Radio-frequency_identification.
- Digital_signature_transponder type Redirect.
- Digital_signature_transponder comment "The Texas Instruments digital signature transponder (DST) is a cryptographically enabled radio-frequency identification (RFID) device used in a variety of wireless authentication applications.".
- Digital_signature_transponder label "Digital signature transponder".
- Digital_signature_transponder sameAs Q5276160.
- Digital_signature_transponder sameAs m.0879rg.
- Digital_signature_transponder sameAs Q5276160.
- Digital_signature_transponder wasDerivedFrom Digital_signature_transponder?oldid=580093454.
- Digital_signature_transponder isPrimaryTopicOf Digital_signature_transponder.