Medical device with secure data transmission
View Patent ↗Secure transmission of electronic data via a data communication link is provided between a device and an additional device with independent transmission channels, wherein at least one of the devices is a medical device. Secure transmission comprises the following steps or means: providing a password in the device, receiving the password in the a additional device separate from the data communication link, selecting one of the independent transmission channels, encrypting the channel identification of the selected independent transmission channel using the received password in the additional device, transmitting the encrypted channel identification from the additional device to the device via the data communication link and decrypting the encrypted channel identification in the device, providing a session key in the device and the additional device and transmitting encrypted electronic data between the device and the additional device via the independent transmission channel.
1. A method for medical device secure transmission of electronic data over a wireless communications link having multiple transmission channels, comprising:
providing a password in a medical device;
receiving the password in an additional device separate from manual entry by a user;
selecting a transmission channel of the wireless communications link using a channel selection function in the additional device, wherein a channel identification is assigned to the selected transmission channel;
encrypting the channel identification of the selected transmission channel using the password received in the additional device;
transmitting the channel identification that was encrypted from the additional device to the medical device via the wireless communication link and decrypting the channel identification that was encrypted in the medical device;
transmitting a session key from the additional device to the medical device over the selected transmission channel; and
transmitting electronic data that was encrypted between the medical device and the additional device via the selected transmission channel using the session key for the encryption and decryption of the electronic data.
2. The method of claim 1 ,
wherein during transmission of the channel identification that was encrypted from the additional device to the medical device, another transmission channel of the data communication link is used, which is different from the selected transmission channel.
3. The method according to claim 1 ,
wherein when supplying the session key, a generation key is first supplied and the session key is generated by a generation function using the generation key.
4. The method of claim 3 ,
wherein when supplying the generation key, the generation key is supplied in the medical device and an additional device and the session key is derived independently in the medical device and the additional device in each case.
5. The method according to claim 1 ,
wherein a generation key has a longer key length than the password.
6. The method according to claim 1 ,
wherein the password is supplied in the medical device, such that the password is generated in the medical device by a password generation function.
7. The method according to claim 1 ,
wherein the password is issued via an output mechanism of the medical device.
8. The method according to claim 1 ,
wherein use of the selected transmission channel that was selected ends after a usage time and another selected transmission channel is selected between the medical device and the additional device, which is then used subsequently for the further encrypted transmission of electronic data.
9. The method according to claim 8 ,
wherein the another selected transmission channels is selected based on the encrypted electronic data transmitted via the selected transmission channel.
10. A method for medical device secure transmission of electronic data over a wireless communication link having multiple transmission channels, comprising:
means for providing a password in a medical device;
means for receiving the password in an additional device separate from manual entry by a user;
means for selecting a transmission channel of the wireless communication link using a channel selection function in the additional device, wherein a channel identification is assigned to the selected transmission channel;
means for encrypting the channel identification of the selected transmission channel using the password received in the additional device;
means for transmitting the channel identification that was encrypted from the additional device to the medical device via the wireless communication link and decrypting the channel identification that was encrypted in the medical device;
means for transmitting a session key from the additional device to the medical device over the selected transmission channel; and
means for transmitting electronic data that was encrypted between the medical device and the additional device via the selected transmission channel selected using the session key for the encryption and decryption of the electronic data.