Title:
【発明の名称】スマートカードにコマンドを安全に入れる方法
Document Type and Number:
Japanese Patent JPH11506560
Kind Code:
A
Abstract:
The invention relates to a method of securely loading and validating commands (COM) in a smart card (SC). Especially in the case where application-specific commands are loaded by an application provider (AP), that is off-line with respect to the card issuer (CI), it must be ensured that the commands are valid. The invention provides a method involving the protection of the commands (COM) by means of authentication codes, these codes (MAC1, MAC2) being produced using two different keys: one key (K1) is stored by the card issuer (CI), the other (K2) by a trusted third party (TTP). A further authentication code (MAC3), produced using a key from a set of keys (K3*), may be utilized to selectively validate commands for individual applications (e.g. AP1, AP2).
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Inventors:
Dolf stein, michael marco paul
Application Number:
JP53491897A
Publication Date:
June 08, 1999
Filing Date:
March 25, 1997
Export Citation:
Assignee:
Koninklidike Pty Tea Naderland NV
International Classes:
G06F21/57; G06K17/00; G06K19/07; G06K19/073; G06F12/14; G07F7/10; (IPC1-7): G06K17/00; G06F12/14; G06K19/07; G06K19/073
Attorney, Agent or Firm:
Takehiko Saito (1 outside)