Patent ID: 8381307
Filing Date: 2013-02-19
Classification: G06Q,G07F

Abstract:
1. A method for protecting a converted applet (CAP) file including at least one applet to be installed in an integrated circuit (IC) Card having an IC Card manufacturer associated therewith, the at least one applet being encoded into the CAP file by a CAP file provider that is different from the IC Card manufacturer and downloaded into the IC Card by a CAP file issuer, and an installation program being stored inside the IC Card for extracting the at least one applet from the CAP file and installing the at least one applet in the IC Card after downloading, the method comprising: decrypting an encrypted CAP file into a protected CAP file after downloading, the CAP file being encrypted into the protected CAP file by the CAP file provider according to a second secret key being unknown to the CAP file issuer to avoid the at least one applet being extracted before the downloading, and the protected CAP file being further encrypted into the encrypted CAP file before downloading according to a first secret key provided by the IC card manufacturer; and decrypting, via a decryption circuit in the IC Card, the protected CAP file using a decryption algorithm provided by the CAP file provider to generate the CAP file for enabling the installation program to install the at least one applet.