Method for protecting a converted applet (CAP) file including encrypting the CAP file
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United States of America Patent
Stats
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Feb 19, 2013
Grant Date -
Nov 26, 2009
app pub date -
Mar 27, 2009
filing date -
Mar 28, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for protecting a CAP file including one or more applets to be installed in an IC Card, includes the applets encoding into the CAP file by a CAP file provider. The method also includes the CAP file downloading into the IC Card by a CAP file issuer, and storing an installation program inside the IC Card. The installation program extracts the applets from the CAP file and installs them in the IC Card, after the downloading. The CAP file provider encrypts the CAP file into a protected CAP file to avoid the applets being extracted before the downloading. The IC Card includes a decryption circuit for decrypting the protected CAP file downloaded into the IC Card. The installation of the applet is enabled by the decryption circuit.
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