Method for secure self-booting of an electronic device

摘要

The present invention relates to a method for a self-boot of an electronic device, wherein an external component is accessible through an interface of the electronic device (101), the method comprising, determining a boot mode for booting the electronic device, wherein the determined boot mode is defined as a secure boot mode; disabling the interface, thereby prohibiting access to the component through the interface, thereby defining a secure state of the electronic device; loading a first code comprising a sequence of executable instructions to be executed for booting the electronic device; loading a second code, the second code being encrypted; and decrypting the second code and executing the second code, thereby enabling the interface, and switching the electronic device from the secure state to a debugging state.

主权项

1. A method for a self-boot of an electronic device, wherein an external component is accessible through an interface of the electronic device, the method comprising:
determining a boot mode for booting the electronic device, wherein the determined boot mode is evaluated and defined as a secure boot mode, wherein determining the boot mode for booting the electronic device further comprises: reading the boot mode from an eFuse, wherein the boot mode comprises a regular boot mode and the secure boot mode, and wherein electronic device data is not accessible through the interface in secure boot mode; disabling the interface, thereby prohibiting access to the component through the interface, thereby defining a secure state of the electronic device; loading a first code comprising a sequence of executable instructions to be executed for booting the electronic device; loading a second code, the second code being encrypted; and decrypting the second code and executing the second code, thereby enabling the interface, and switching the electronic device from the secure state to a debugging state.