JPWO2019239343A5 - - Google Patents

Claims (25)

A way to secure communication between portable and external devices,
The external device transfers energy to the implantable device to charge the battery of the implantable device via a percutaneous energy transmission (TET) link.
That the external device modulates the key to the energy transmitted by the TET link.
Using the key to encrypt communication over a wireless channel,
How to prepare. The key is a public key, and the encryption comprises using asymmetric encryption and the public key to send a message from the portable device over the radio channel. The method according to 1 . The message contains the session key
The method of claim 2 , further comprising encrypting a command to the portable device with the session key. The message contains the session key
The method of claim 2 , further comprising encrypting the data transmitted from the portable device with the session key. To secure the commands sent to the portable device according to a high level security protocol,
To secure the data transmitted from the portable device to the external device according to the low level security protocol.
The method according to any one of claims 1 to 4 , further comprising. 5. The method of claim 5 , wherein a command for changing therapeutic parameters from the external device to the implantable device is assigned to the high level of security. The method of any one of claims 5-6 , wherein the high level security protocol requires modulation of the key updated within 15 minutes before accepting the command. Verifying a message transmitted over the radio channel by transmitting a verification message from the external device to the portable device via the TET link.
The method according to any one of claims 1 to 7 , further comprising. The method of any one of claims 1-8, further comprising storing the key in the portable device. 6. The method of claim 6 , wherein the command temporarily allocates the low level of security depending on the state of the user of the portable device. 10. The method of claim 10 , wherein the condition comprises myocardial infarction. A portable device for secure communication,
A percutaneous energy transmission (TET) receiver configured to receive power from an external device and supply the power to the portable device.
A data receiving circuit connected to the TET receiver and configured to receive a public key from the TET receiver.
An encryption module that is functionally connected to the data receiving circuit, receives the public key from the data receiving circuit, and asymmetrically encrypts the message based on the public key to generate an encrypted message. ,
A transceiver that is functionally connected to receive the encrypted message from the encryption module and transmit the encrypted message to the external device via a bidirectional wireless channel.
A portable device. 12. The portable device of claim 12 , wherein the portable device does not include a modulator capable of modulating an outgoing message on the TET channel. 12-13 , wherein the portable device does not include an asymmetric decryption circuit capable of generating the public key and the private key and decrypting the asymmetric encrypted message encrypted with the public key. The portable device described in any one of the sections. A system for secure communication between portable devices and external devices.
It ’s a portable device,
Inductive energy receiving circuit and
A data receiving circuit capable of demodulating the signal from the energy receiving circuit, and
A transceiver for data communication via wireless channels,
It ’s a processor,
Encrypt the message with an asymmetric protocol
Generate a symmetric encryption key,
Data is encrypted using the symmetric encryption key to generate an encrypted signal.
A processor configured to decode the data signal received using the symmetric encryption key, and
Including portable devices and
A near-field external device that includes an induction generator configured to induce current to the inductive energy receiving circuit.
The system. The proximity field external device generates a TET generator configured to transfer energy to the portable device, a public key and a private key, and decrypts an asymmetric encrypted message encrypted with the public key. An asymmetric decryption circuit and a modulator functionally connected to the decryption circuit to receive the public key, the public key being modulated into a TET signal and the key being the portable device. 15. The system of claim 15 , comprising a modulator functionally connected to the TET generator to transmit to. 16. The system of claim 16 , wherein the proximity field external device does not include a receiver capable of receiving messages on the TET channel. A way to manage the security of portable devices,
Detecting the current position and
Adjusting the security protocol according to the current position and
Including, how. 18. The method of claim 18 , wherein the location is a high risk location and the adjustment comprises increasing security limits. The method of any one of claims 18-19 , wherein the position is a low risk position and the adjustment comprises reducing a security limitation. A system for performing the method according to any one of claims 18 to 20 . A way to manage the security of portable devices,
To detect the current state of the user of the device and
Adjusting the security protocol according to the current state,
How to prepare. 22. The method of claim 22 , wherein the condition is stable and the adjustment comprises increasing security limitations. 22. The method of any one of claims 22-23 , wherein the condition comprises an acute dangerous condition, wherein the adjustment comprises reducing a security limitation. A system for performing the method according to any one of claims 22 to 24 .