Remote display tamper detection using data integrity operations
First Claim
1. A method for detecting tampering of a remote display having an associated remote display security module, comprising:
- generating at a secure module a first data integrity result by performing a first data integrity operation on display data that instructs the remote display what to display;
transmitting the display data from the secure module to the remote display security module;
receiving at the remote display security module the display data;
generating a second data integrity result at the remote display security module by performing the first data integrity operation on the received display data;
transmitting the second data integrity result to the secure module; and
determining at the secure module whether the remote display has been tampered with based at least in part on determining whether the first data integrity result matches the second data integrity result.
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Accused Products
Abstract
Methods and systems for detecting tampering of a remote display. According to one method, a first data integrity result is generated by performing a first data integrity operation on display data to be displayed on the remote display at a secure module. The display data is transmitted from the secure module to the remote display security module. The remote display security module receives the display data. A second data integrity result is generated by performing the first data integrity operation on the display data received at the remote display security module. A determination is made as to whether the remote display has been tampered with at the secure module if the first data integrity result does not match the second data integrity result.
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Citations
23 Claims
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1. A method for detecting tampering of a remote display having an associated remote display security module, comprising:
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generating at a secure module a first data integrity result by performing a first data integrity operation on display data that instructs the remote display what to display; transmitting the display data from the secure module to the remote display security module; receiving at the remote display security module the display data; generating a second data integrity result at the remote display security module by performing the first data integrity operation on the received display data; transmitting the second data integrity result to the secure module; and determining at the secure module whether the remote display has been tampered with based at least in part on determining whether the first data integrity result matches the second data integrity result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for detecting tampering of a remote display having an associated remote display security module, comprising:
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a secure module adapted to; generate a first data integrity result by performing a first data integrity operation on display data to be displayed on the remote display; transmit the display data to the remote display security module; determine whether the remote display has been tampered with based at least in part on determining whether the first data integrity result matches a second data integrity result; and a remote display security module adapted to; receive the display data; generate the second data integrity result by performing the first data integrity operation on the display data received at the remote display security module; and transmit the second data integrity result to the secure module. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification