Motorola Mobility LLC

Google Technology Holdings LLC

Scott P Debates

Jagatkumar V Shah

Francis W Forest

Kent D Rager

Joel D Voss

Mary K Hor-Lao

Douglas A Lautner

A method for controlling subsidy locking of a handset device includes storing, in a handset device, an asymmetrically digitally signed subsidy unlock data block that has been modified based on a password after signing (); modifying the stored unlock data block based on a received subsidy unlock password (); and granting subsidy unlock status if the asymmetric digital signature of the modified, stored unlock data block properly verifies (). A method () for controlling subsidy locking of a handset device includes storing, in the handset device, an asymmetrically digitally signed subsidy unlock data block that comprises a password portion that has been modified after signing (); replacing the contents of the modified password portion with a received subsidy unlock password to produce an updated subsidy unlock data block (); and granting subsidy unlock status if the asymmetric digital signature of the updated subsidy unlock data block properly verifies ().

Subsidy lock enabled handset device with asymmetric verification unlocking control and method thereof

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Vernon Hills, IL, United States of America

Scott P Debates