| 摘要 |
<P>PROBLEM TO BE SOLVED: To disclose a method that prevents cloning of a mobile communication device by downloading a boot image onto the device and generating a device-bound certificate (DBC). <P>SOLUTION: A DBC includes an authentication code generated with a hashed message authentication code/algorithm and a key specific to a device. The method stores the DBC on a boot image to bind the boot image to the mobile communication device. A flash loader downloads a boot image (204), and calls a protected application (206). The protected application computes a DBC (208), optionally encrypts the DBC with a random key (210), and transfers it to the flash loader (212). The flash loader inserts the DBC into a DBC field (214), and loads the boot image into a flash memory of the mobile communication device (216). <P>COPYRIGHT: (C)2005,JPO&NCIPI |
