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Method for checking whether program instructions have been executed by a portable end device
US9058484B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9058484-B2 |
| Application number | US-201113697161-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 6, 2011 |
| Priority date | May 10, 2010 |
| Publication date | Jun 16, 2015 |
| Grant date | Jun 16, 2015 |
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Abstract
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A method and a system for checking whether program instructions have been executed by an end device, wherein, the end device calls for program instructions and the program instructions are stored in executable form in a trustworthy entity, in particular a chip card. Subsequently, the program instructions are variably modified in the trustworthy entity such that the modified program instructions vary upon each execution of the method. Through execution of the instructions in the end device there is obtained a check value which is in turn transferred to the trustworthy entity and verified in the trustworthy entity.
First claim
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The invention claimed is: 1. A method for checking whether program instructions have been executed by an end device, comprising the steps: calling for the program instructions by the end device, the program instructions being stored in executable form in a trustworthy entity; variably modifying the executable program instructions by the trustworthy entity such that the modified program instructions vary upon each execution of the method; transferring the modified program instr…
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Physics · mapped topic
- G06F21/54Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9058484B2 cover?
- A method and a system for checking whether program instructions have been executed by an end device, wherein, the end device calls for program instructions and the program instructions are stored in executable form in a trustworthy entity, in particular a chip card. Subsequently, the program instructions are variably modified in the trustworthy entity such that the modified program instructions…
- Who is the assignee on this patent?
- Bauer Sven, Giesecke & Devrient Gmbh
- What technology area does this patent fall under?
- Primary CPC classification G06F21/54. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 16 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).