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Analysis of the generic attacks and countermeasures for block cipher based message authentication code algorithms (MAC) in sensor applications is undertaken; the conclusions are used in the design of two new MAC constructs quicker block chaining MAC1 (QBC-MAC1) and quicker block chaining MAC2 (QBC-MAC2). Using software simulation we show that our new constructs point to improvements in usage of CPU...
Checking the integrity of a file on a remote untrusted or compromised server is to be achieved with minimal computational and storage requirements on part of a healthy verifier. Existing solutions are time and storage intensive. A fast protocol comprising of maximum period linear congruence generators and linear feedback shift registers with compact storage requirements is proposed.
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