Secure element and method for converting message communication protocols
View Patent ↗The present description discloses a secure element and a communication method comprising a router managing first messages using a first communication protocol between applications of the secure element and the outside of the secure element, and a software layer performing a processing at the level of the router. The software layer is adapted to verify the compatibility of a second communication protocol, different from the first one, with which second messages are received, in the absence of a compatibility, convert the second messages into the first communication protocol, and transmit the second messages to the router.
1. A secure element comprising:
a router, of the secure element, configured to manage first messages using a first communication protocol between a first application of the secure element and an outside of the secure element; and
a software layer, of the secure element, configured to, at a level of the router:
inform a second device, on the outside of the secure element, of a first presence of the first application of the secure element, in response to a first pipe to the software layer being created;
inform the second device of a second presence of a second application of the secure element, in response to a second pipe to the software layer being created;
enable respective links between the second device and the first and second applications, wherein the software layer is a virtual destination host for the applications;
prior to transmitting second messages to the router, determine a compatibility of a second communication protocol, with which the second messages are received from the second device, with the first communication protocol;
in an absence of the compatibility, convert the second messages into the first communication protocol;
direct the converted second messages to either the first application or the second application in accordance with a recipient intended by the second device; and
transmit the converted second messages to the router.
2. The secure element according to claim 1 , wherein the first communication protocol is implemented by a first device external to the secure element.
3. The secure element according to claim 1 , wherein the first communication protocol is a Virtual Network Protocol (VNP) protocol defined according to a Global Platform Technology—Virtual Primary Platform—Network Protocol 1.0.1 or subsequent standard.
4. The secure element according to claim 1 , wherein the second communication protocol is selected from the group consisting of: a Host Controller Interface (HCI) protocol, a Single Wire Protocol (SWP) protocol, a Contactless Tunneling (CLT) protocol, packet communication protocol defined by an International Organization for Standardization 7816 (ISO7816) standard, a simplified High-Level Data Link Control (sHDLC) protocol, or a communication protocol using an internal timing memory.
5. The secure element according to claim 1 , wherein the first and second messages contain data packets of a packet communication method.
6. The secure element according to claim 5 , wherein the software layer is configured to modify headers of the data packets of the second messages.
7. The secure element according to claim 1 , wherein the second messages originate from a near-field communication device.
8. The secure element according to claim 1 , wherein the first and second messages are intended for applications configured to be implemented by a high-level operating system of the secure element.
9. The secure element according to claim 1 , wherein the software layer has a routing table enabling conversion of a given message intended for a given application.
10. The secure element according to claim 1 , wherein the software layer uses an injective function enabling conversion of a given message intended for a given application.
11. The secure element according to claim 1 , wherein the secure element is embedded in an electronic system.
12. The secure element according to claim 1 , wherein the secure element is integrated in an electronic system.
13. A method of communication by a secure element with an outside of the secure element, the secure element comprising a router managing first messages using a first communication protocol between a first application of the secure element and the outside of the secure element, the method comprising:
informing, by a software layer of the secure element, at a level of the router, a second device, on the outside of the secure element, of a first presence of the first application of the secure element, in response to a first pipe to the software layer being created;
informing, by the software layer of the secure element, at the level of the router, the second device of a second presence of a second application of the secure element, in response to a second pipe to the software layer being created;
enable, by the software layer of the secure element, at the level of the router, respective links between the second device and the first and second applications, the software layer being a virtual destination host for the applications;
prior to transmitting second messages to the router, determining, by the software layer of the secure element, at the level of the router, a compatibility of a second communication protocol, with which the second messages are received from the second device, with the first communication protocol;
in an absence of the compatibility, converting, by the software layer of the secure element, at the level of the router, the second messages into the first communication protocol;
directing, by the software layer of the secure element, at the level of the router, the converted second messages to either the first application or the second application in accordance with a recipient intended by the second device; and
transmitting, by the software layer of the secure element, at the level of the router, the converted second messages to the router.
14. The method according to claim 13 , wherein the first communication protocol is implemented by a first device external to the secure element.
15. The method according to claim 13 , wherein:
the first communication protocol is a Virtual Network Protocol (VNP) protocol defined according to a Global Platform Technology—Virtual Primary Platform—Network Protocol 1.0.1 or subsequent standard; and
the second communication protocol is selected from the group consisting of: a Host Controller Interface (HCI) protocol, a Single Wire Protocol (SWP) protocol, a Contactless Tunneling (CLT) protocol, packet communication protocol defined by an International Organization for Standardization 7816 (ISO7816) standard, a simplified High-Level Data Link Control (sHDLC) protocol, or a communication protocol using an internal timing memory.
16. The method according to claim 13 , wherein the first and second messages contain data packets of a packet communication method.
17. The method according to claim 16 , further comprising modifying, by the software layer, headers of the data packets of the second messages.
18. The method according to claim 13 , wherein the first and second messages are intended for applications configured to be implemented by a high-level operating system of the secure element.