System and method for data transmission

摘要

A method for transmission data in a system is provided. The system includes a first device, plurality of second devices, and plurality of third devices, the method includes steps of encrypting the data with a first key and encrypting the first key with a second key at the first device, sending the encrypted data from the first device to the second device, decrypting the second key and encrypting the first key with a third key by the second device, sending the encrypted data from the second device to the third device, and decrypting the third key and the first key by the third device.

主权项

1. A method for transmitting content data between a first device and an end user device, wherein said first device is connected to a transfer device and said transfer device is connected to said end user device, said method comprising, at the level of the transfer device:
receiving the content data encrypted with a first key; receiving the first key encrypted with a second key; receiving the second key encrypted with a third key for decrypting by the end user device; encrypting said second encrypted key with a fourth key for decrypting by the end user device; transmitting, to the end user device, the encrypted content data, the first key encrypted with the second key and said second encrypted key encrypted with the fourth key for decrypting by the end user device.