Method of securely modifying data on a smart card

Details Method of securely modifying data on a smart card Method of securely modifying data on a smart card

1997-03-10

1999-01-05

Evans, F. L.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235379, G07F 710

Patent

active

058566597

ABSTRACT:
A method of securely transferring data, such as program data, to a smart card (1) is disclosed. In order to be applicable in non-secure environments, the method of the invention involves a one-way authentication mechanism, comprising the use of a series of interrelated authentication values (R0, R1, R2, . . . ). Further security is achieved by using commands (INIT, TRAN) which are each provided with an authentication code (MAC0, MAC1, . . . ). In order to transfer data only to selected cards, the card may accept transfer commands only if a card profile (CP) matches a distribution profile (DP).

REFERENCES:
patent: 5161231 (1992-11-01), Iijima

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