G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 19/07 (2006.01) G06F 12/14 (2006.01) G07F 7/10 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2131510
A smartcard that allows different Service Providers to coexist on the smartcard with none of the Service Providers, nor the owner of the smartcard, having access to the files created for, or by, each of the resident Service Providers. The operating system of the smartcard includes a root directory that is owned by the smartcard's issuer/owner, and each Service Provider is a "user" that is installed by the issuer/owner. Each such user is provided with a subdirectory of the root directory, and within the subdirectory the user creates files and subdirectories with files, as the user deems necessary. The operating system prevents all users of the smartcard, including the smartcard's issuer/owner and the smartcard's holder, from accessing any files that are owned by any other user, when that user chooses to prevent such access. This power to exclude is effected through apassword file that is owned by the user and which cannot be altered by any other user, including the smartcard's issuer/owner. Optionally, the smartcard's issuer/owner is given the power to erase all files of a given user. Connection is effected with a protocol which authenticates all parties to the connection. Thus, in a connection between the smartcard and a user, the smartcard determines whether the user should be granted access, and the user determines whether the smartcard is a valid smartcard. Authentication of the possessor of the smartcard may also be effected.
Mandelbaum Richard
Sherman Stephen Andrew
Wetherington Diane R.
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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