Patent ID: 8532295

Claim:
A method for securely loading data into a secured host processor of an NFC system, the method comprising: generating a first session key, receiving a user identifier from the user of an NFC system for receiving the first session key, the NFC system comprising an NFC interface circuit for sending and receiving data, transmitting the first session key to a first host processor of the NFC system, for storage therein as a second session key, through a first communication link established as a function of the user identifier, wherein transmission through the first communication link is according to a routing information corresponding to the user identifier, ciphering data to be loaded into the first host processor using a public key of the first host processor and the first session key, the public key and the first session key being combined as a single encryption key for ciphering the data to be loaded into the first host processor, transmitting the ciphered data to the first host processor through a second communication link wherein a contactless-reading integrated circuit card communicates with the NFC interface circuit, and deciphering the ciphered data using a private key corresponding to the public key of the first host processor and the second session key stored in the first host processor, the deciphering of the ciphered data being performed only if the second session key stored in the host processor corresponds to the first session key used to cipher the data.