Mobile device, method of processing an input in a mobile device and electronic payment method using a mobile device

摘要

Handheld wireless communications devices include a data input device, which is configured to receive first input data provided by a user, a main processor and a security processor. The security processor includes an input interface and input processing block configured to extract second data from a first portion of the first input data using, for example, a data mapping operation. The security processor also includes an encryption circuit, which is configured generate secure data from the extracted second data by encrypting the extracted second data using an encryption key, and a data/control interface, which is configured to transfer the secure data to the main processor.

主权项

1. A handheld wireless communications device, comprising:
a data input device configured to receive first input data provided by a user; a main processor; and a security processor, comprising:
an input interface and input processing block configured to extract second data from a first portion of the first input data using a data mapping operation;an encryption circuit configured to generate secure data from the extracted second data by encrypting the extracted second data using an encryption key; anda data/control interface configured to transfer the secure data to the main processor;wherein said security processor is configured to independently determine the timing of a start and/or end of a secure input mode by an application executed therein in the absence of an instruction or request from said main processor, said secure input mode supporting operations by said encryption circuit to encrypt the extracted second data so that it is not decipherable by said main processor.