Method for transmitting and receiving encrypted digital information with encrypted parity bits and related systems

摘要

The information bits and the parity bits are encrypted in a microcontroller and transmitted on a bus to a transceiver head which forms the frames to be transmitted on a channel from encrypted information bits and from encrypted parity bits received on the bus.

主权项

1. A method for transmitting information in a system comprising a first integrated near field communication (NFC) transceiver device, a second integrated device, and a bus coupled between the first integrated NFC transceiver device and the second integrated device, the first integrated NFC transceiver device transmitting the information in the form of frames comprising blocks of bits of the information respectively followed by parity bits, the first integrated NFC transceiver device comprising a function of calculation of the parity bits from information to be transmitted, the method comprising:
setting the first integrated NFC transceiver device and the second integrated device in a first state comprising
within the second integrated device, generating the information to be transmitted, encrypting the information to be transmitted and generating encrypted parity bits from bits of non-encrypted information, transmitting on the bus the bits of the encrypted information and the encrypted parity bits, and deactivating of the function of calculation of the parity bits, andwithin the first integrated NFC transceiver device, generating the frames from the encrypted information bits and from the encrypted parity bits received on the bus.