Method for protecting a security module and arrangement for the implementation of the method
First Claim
1. A method for protecting a security module, in which security-relevant data are stored, inserted on a device motherboard, comprising the steps of:
- monitoring proper insertion of said security module on said device motherboard with a first function unit and a second function unit in said security module;
signaling at least one status of said security module with said first function unit; and
detecting at least one of improper use and improper replacement of said security module with said second function unit and, upon a detection of at least one of said improper use and said improper replacement, said second function unit causing said security-relevant data to be erased.
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Accused Products
Abstract
In a security module and a method for protecting a security module, wherein security-relevant data are stored in a memory in the module, proper insertion of the security module on a device motherboard is monitored with a first function unit and a second function in the security module. The first function unit signals the status of the security module. The second function unit detects improper use or improper replacement of the security module, and upon detection of improper use or improper replacement, the second function unit causes the security-relevant data to be erased.
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Citations
16 Claims
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1. A method for protecting a security module, in which security-relevant data are stored, inserted on a device motherboard, comprising the steps of:
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monitoring proper insertion of said security module on said device motherboard with a first function unit and a second function unit in said security module;
signaling at least one status of said security module with said first function unit; and
detecting at least one of improper use and improper replacement of said security module with said second function unit and, upon a detection of at least one of said improper use and said improper replacement, said second function unit causing said security-relevant data to be erased. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A security module for insertion on a device motherboard, comprising:
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a memory in which security-relevant data are stored;
a battery;
a connection to a system voltage of a device containing said device motherboard;
a first function unit and a second function unit;
a logic arrangement for supplying said first function unit and said second function unit with one of voltage from said battery and said system voltage;
said first function unit having a loadable memory in which a time credit is loaded, and said first function unit monitoring said time credit and having a signal element which signals expiration of said time credit; and
said second function unit detecting at least one of improper use and improper replacement of said security module and, upon detection of at least one of said improper use and said improper replacement, erasing said security-relevant data in said memory. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification