Key security system for vehicle-based information node
First Claim
Patent Images
1. A key-based security system for a vehicle usable with a plurality of coded keys each having a key value, the security system comprising:
- first and second key switches each capable of receiving one of the coded keys to provide a signal indicating a key value of the received key;
an engine control module responding to the key value from the first key switch but not the second key switch to allow starting of an engine of the vehicle when the key value matches a predetermined car authorization value;
an on-board memory; and
a memory access filter responding to the key value from one of the key switches to communicate data with the on-board memory when the key value matches a predetermined data authorization value.
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Abstract
A system for providing a key-based access to data stored on a vehicle allows the vehicle to be a critical link as a platform for mobile computing while preserving data security. Multiple hierarchies of key codes allow all users to have access to all vehicle functions but different memory partitions for storing data. The partitions may be used for storing user specific data including passwords, preference settings, and driving log data. The data may be encrypted by the key code to be secure even if the memory system is removed from the vehicle or the vehicle is stolen.
46 Citations
16 Claims
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1. A key-based security system for a vehicle usable with a plurality of coded keys each having a key value, the security system comprising:
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first and second key switches each capable of receiving one of the coded keys to provide a signal indicating a key value of the received key;
an engine control module responding to the key value from the first key switch but not the second key switch to allow starting of an engine of the vehicle when the key value matches a predetermined car authorization value;
an on-board memory; and
a memory access filter responding to the key value from one of the key switches to communicate data with the on-board memory when the key value matches a predetermined data authorization value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A key-based automotive security system for a vehicle usable with a plurality of coded keys having a first key code field and a second key code field each holding a key value, the security system comprising:
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a key switch receiving one of the coded keys to provide a first and second key value of the first and second key code fields of the received key;
an engine control module responding to the first key value to allow starting of an engine of the vehicle when the first key value matches a predetermined car authorization value;
an on-board memory having a plurality of partitions identified each to different data authorization values; and
a memory access filter responding to the second key code value to communicate data only with a partition of the on-board memory having a data authorization value matching the second key value;
whereby multiple keys all allowing starting of the engine nevertheless provide access to different partitions of the on-board memory;
wherein at least one coded key also has a third key code field, the partitions of the on-board memory include sub-partitions identified each to different data authorization value, and the memory access filter responds to the third key code value to communicate data only with the sub-partition of the on-board memory having a data authorization value matching the third key value. - View Dependent Claims (14, 15, 16)
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Specification