Sandisk Technologies Inc.

Sandisk Il Ltd.

Nir Ofek Paz

Boris Dolgunov

Eyal Sobol

Nir Ekhauz

A storage device comprising a memory, a controller, and a host interface operative to connect with a host. The memory containing data locations access to which are controllable by a protection application which is executable on a host. When the host interface operatively coupled to a host data locations in the memory are accessible to an operating system of the host only under permission from the protection application. The controller communicates with the protection application running on the host for allowing the protection application access to data locations in the memory. Upon a host request for access to a data location, the controller determines if permission to access the requested data location is acquired from the protection application. The permission is based on determination of the protection application that the data location does not contain malicious data harmful to the host operating system, to any application and/or to any data on the host.

Preventing access of a host device to malicious data in a portable device

A storage device and method for updating data stored in a partition of the storage device are provided. In one embodiment, a storage device is provided that contains a logical-to-physical address map and a memory with a first partition storing original data and a second partition. The storage device receives from a host device (i) a command to write updated data to a first logical address and (ii) a signature for verifying integrity of the updated data, wherein the first logical address is mapped to a physical address of the first partition. The storage device then stores the updated data in the second partition instead of the first partition and attempts to verify the signature of the updated data. If the attempt to verify the signature is successful, the storage device updates the logical-to-physical address map to map the first logical address to a physical address of the second partition.

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Kiryat Tivon, Israel

Nir Ofek Paz