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US 2019/0163935 A1Published application
Memory management of a security module
AssigneeGiesecke+Devrient Mobile Security GmbH
InventorMichael BALDISCHWEILER
Life of this patent
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Abstract
The present invention relates to a security module and to a corresponding method for operating the security module for realizing a secure memory management. The subject matter according to the invention takes into account existing hardware components, for example a smart card, and can thus be integrated into existing smart cards with particularly little technical effort. The secure memory management prevents attacks against memory segments of the data memory.
Claims16
-15. (canceled)
A security module with secure memory management, comprising:
- a data memory and at least two write units that are each adapted to cause write operations on the data memory;
- a detection unit adapted to detect the write unit that causes the write operation;
- and
- a manipulation handling unit adapted to trigger a security operation made available, if the causing of the write operation is to be associated with a non-authorized write unit.
1 more element
A method for secure memory management comprising:
- physical measuring of a write operation on a data memory employing a charge pump;
- and
- selecting a security operation made available in dependence on the read-out, on the basis of a logic made available.
Dependencies are inferred from the claim text.