Key management scheme for use with electronic cards
First Claim
1. In an electronic device issued to a particular user for insertion into a host electronic device and for providing to said host electronic device, upon entry into the host electronic device of a predetermined personal identification number (PIN), parameters identifying or associated with the particular user,means for securing the parameters against use by other then said particular user, comprising:
- means for storing the parameters in encrypted form according to a key;
means for receiving the PIN from the host device;
means for computing the key as a function of at least the PIN entered by the user; and
means for decrypting the parameters according to the key.
1 Assignment
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Accused Products
Abstract
In an electronic card of the type for insertion into a host electronic device for providing to the host device security parameters pertaining to the rightful holder of the card, the security parameters are stored in encrypted form to preclude their discovery by unauthorized parties. The decryption mechanism resists probing by unauthorized parties.
232 Citations
6 Claims
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1. In an electronic device issued to a particular user for insertion into a host electronic device and for providing to said host electronic device, upon entry into the host electronic device of a predetermined personal identification number (PIN), parameters identifying or associated with the particular user,
means for securing the parameters against use by other then said particular user, comprising: -
means for storing the parameters in encrypted form according to a key; means for receiving the PIN from the host device; means for computing the key as a function of at least the PIN entered by the user; and means for decrypting the parameters according to the key. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification