PREVENTING FRAUDULENT USE BY CLONING OF A TRUSTED APPLICATION
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United States of America
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Issued Date -
Jan 30, 2025
app pub date -
Mar 2, 2023
filing date -
Mar 2, 2023
priority date (Note) -
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Abstract
A method prevents fraudulent use by cloning of a trusted application (TA) executable in a secure execution environment (SEE) of a host device (HD). According to the method, the trusted application (TA) starts (310; 406) in a locked mode in which access to protected functionality and data of the trusted application (TA) is prohibited (312). The trusted application performs a handshake procedure (320; 400) with a computerized backend resource (BE) to verify that a current execution state of the trusted application (TA) has not already been occupied by another instance of the trusted application (TA). Only upon successful verification by the handshake procedure (320; 400) will the trusted application (TA) switch (330; 432) to an unlocked mode in which access to the protected functionality and data is permitted (332).
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