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An electronic key validation process increases security by encrypting the security access codes. A key (10) receives data having a hidden polynomial select code and polynomial seed from a host (12). A locally stored (24, 26) select offset and seed offset in the key identifies the location (22) of th

An electronic key validation process increases security by encrypting the security access codes. A key (10) receives data having a hidden polynomial select code and polynomial seed from a host (12). A locally stored (24, 26) select offset and seed offset in the key identifies the location (22) of the select code and seed in the data. The select code decodes (32) into polynomial coefficients which are used to configure a polynomial generator (34). The seed is loaded into the polynomial generator as a starting point of the polynomial. The polynomial generator is clocked a number of cycles to calculate a remainder. The select code is modified (28) to select a new polynomial, and the polynomial generator is clocked another number of cycles. The host runs a similar encryption algorithm. The remainder is sent to the host where it is compared with the host generated remainder for key validation.

대표청구항 ▼

A method of validating a key with a host, comprising the steps of: configuring a polynomial generator with a first polynomial; clocking said polynomial generator a first number of cycles based on a first clock count from a starting point to calculate a first remainder in said polynomial generator; c

A method of validating a key with a host, comprising the steps of: configuring a polynomial generator with a first polynomial; clocking said polynomial generator a first number of cycles based on a first clock count from a starting point to calculate a first remainder in said polynomial generator; configuring said polynomial generator with a second polynomial; and clocking said polynomial generator a second number of cycles based on a second clock count from said first remainder to calculate a second remainder in said polynomial generator.