{TARDIS}: Time and remanence decay in {SRAM} to implement secure protocols on embedded devices without clocks
21st USENIX Security Symposium (USENIX Security 12), 2012•usenix.org
Lack of a locally trustworthy clock makes security protocols challenging to implement on
batteryless embedded devices such as contact smartcards, contactless smartcards, and
RFID tags. A device that knows how much time has elapsed between queries from an
untrusted reader could better protect against attacks that depend on the existence of a rate-
unlimited encryption oracle.
batteryless embedded devices such as contact smartcards, contactless smartcards, and
RFID tags. A device that knows how much time has elapsed between queries from an
untrusted reader could better protect against attacks that depend on the existence of a rate-
unlimited encryption oracle.
Abstract
Lack of a locally trustworthy clock makes security protocols challenging to implement on batteryless embedded devices such as contact smartcards, contactless smartcards, and RFID tags. A device that knows how much time has elapsed between queries from an untrusted reader could better protect against attacks that depend on the existence of a rate-unlimited encryption oracle.
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