Computing system with decryption functions and secure data product
4 Assignments
0 Petitions
Accused Products
Abstract
A navigation system with decryption functions. The navigation system may receive from a portable data storage medium an encrypted authentication key, an encrypted first portion of a geographic database, and an unencrypted second portion of the geographic database. The navigation system may then decrypt the encrypted authentication key so as to gain access to a set of verification information and to a decryption key for decryption of the encrypted first portion. The navigation system may then use the verification information to validate use of the database, such as by ensuring that the data storage medium is authorized to hold the database or that the navigation system is authorized to access the database. In turn, the navigation system may then use the decryption key to decrypt the encrypted first portion, so as to gain access to the database as a whole. The navigation system may then use information in the database to convert location coordinates into map information for presentation to a user. Also disclosed is a secure geographic database for use with a navigation system.
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Citations
48 Claims
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1-28. -28. (canceled)
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29. A method of operating a computing platform comprising:
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receiving secured data comprising an encrypted first portion of a data product and an unencrypted second portion of the data product, said unencrypted second portion being unusable by the computing platform without decrypting said encrypted first portion;
decrypting said encrypted first portion with a decryption key; and
executing a program on the computing platform to use the data product including both the first portion and the second portion for an intended purpose, wherein said program is not included with said data product. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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38. A computing system comprising:
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a processor;
a data storage medium coupled to said processor, the data storage medium holding a set of data comprising an encrypted first portion of a data product and an unencrypted second portion of the data product, wherein the first portion comprises critical data that enables use of the data product; and
a routine executable by the processor for decrypting the encrypted first portion of the data product, thereby enabling a program executable by said processor to use the data product including both the first portion and the second portion for an intended purpose, wherein said program is not included with said data product. - View Dependent Claims (39, 40, 41, 42, 43)
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44. A data product stored on a medium comprising:
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an encrypted first portion; and
an unencrypted second portion, wherein said first portion comprises critical data that when decrypted enables a program executed on a computing platform to use the data product including both said first portion and said second portion for an intended purpose, said program is not included with said data product. - View Dependent Claims (45, 46, 47, 48)
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Specification