Securing transactions

A non-transitory computer-readable medium comprising a computer program stored thereon comprising instructions, which when executed by a processor of a server, configure a server to perform a method of data processing for securing a sensitive content exchange initialized between an unsecure first communication terminal used by a user and a device, the server, the device and the second communication terminal being linked by a secure communication channel and the unsecure first communication terminal being linked to an unsecure communication channel, wherein the method comprises the following acts:

• receiving an exchange request via the device addressed to the server, said exchange request being exempted from sensitive data belonging to the user being transmitted via the unsecure communication channel, said sensitive data including at least personal data of the user;
• continuously transmitting, in response to the exchange request, a first series of codes in a first data stream associated with the sensitive content exchange, from the server to the device, the first series of codes being drawn from a private key associated with the device;
• receiving a second data stream from the second communication terminal, the second data stream comprising a second series of codes corresponding to a capture of multimedia content broadcast by the unsecure first communication terminal using at least one sensor of the second communication terminal;
• detecting an adequate or an inadequate level of match between the first and second series of codes including comparing the first series of codes to the second series of codes;
• and
• securing the sensitive content exchange involving the unsecure first communication terminal in response to the act of detecting including:
• when the adequate level of match is detected:
• associating the second communication terminal, the device, and the sensitive content exchange;
• and
• authorizing a continuation of the sensitive content exchange between the second communication terminal and the device;
• and
• when the inadequate level of match is detected, terminating the transmission of the second data stream.

A server for performing data processing for securing a sensitive content exchange initialized between an unsecure first communication terminal and a device, the server being able to communicate with a second communication terminal available to the first user and with the device, a secure communication channel linking the server to the device and the second communication terminal, and an unsecure communication channel being linked to the unsecure first communication terminal, the server comprising:

• a communication channel for receiving an exchange request via the device addressed to the server, said exchange request being exempted from sensitive data belonging to the user being transmitted via the unsecure communication channel, said sensitive data including at least personal data of the user;
• a transmitter configured to continuously transmit a first series of codes in a first data stream associated with the sensitive content exchange to the device, the first series of codes drawn from a private key associated with the device;
• and
• a receiver configured to receive a second data stream from the second communication terminal, the second data stream comprising a second series of codes corresponding to a capture of multimedia content broadcast by the unsecure first communication terminal using at least one sensor of the second communication terminal;
• and
• a comparator configured to compare the first series of codes to the second series of codes and detect an adequate or an inadequate level of match between the first and second series of codes,
• wherein the server is configured to secure the sensitive content exchange involving the unsecure first communication terminal including:
• when the adequate level of match is detected:
• associate the second communication terminal, the device and the sensitive content exchange;
• and
• authorize a continuation of the sensitive content exchange between the associated second communication terminal and device, such authorization being issued without transmitting sensitive information from the second communication terminal to the unsecure first communication terminal;
• and
• when no sufficient match between the first and second series of codes is detected, terminate the transmission of the second data stream.