Data retransmission device and method
First Claim
1. A data retransmission device for encrypting input data and retransmitting the encrypted data to a predetermined device, the data retransmission comprising:
- an input data processing unit which receives the input data, codes the input data in a format suitable for the predetermined device to generate coded input data, and encrypts the coded input data with a common key to be shared with the predetermined device to generate encrypted input data; and
a link protection unit which receives the encrypted input data from the input data processing unit via a predetermined bus and retransmits the encrypted input data to the predetermined device.
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Accused Products
Abstract
A data retransmission device and method are provided that can simultaneously implement link protection and internal protection without increasing design complexity and cost. A data retransmission device for encrypting input data and retransmitting the encrypted data to a predetermined device includes an input data processing unit receiving the input data, coding the input data in a format suitable for the predetermined device, and encrypting the input data with a common key to be shared with the predetermined device, and a link protection unit receiving the encrypted input data from the input data processing unit via a predetermined bus and retransmitting the received data to the predetermined device. In addition, the common key is created in the link protection unit and transmitted to the input data processing unit via the predetermined bus.
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Citations
25 Claims
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1. A data retransmission device for encrypting input data and retransmitting the encrypted data to a predetermined device, the data retransmission comprising:
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an input data processing unit which receives the input data, codes the input data in a format suitable for the predetermined device to generate coded input data, and encrypts the coded input data with a common key to be shared with the predetermined device to generate encrypted input data; and
a link protection unit which receives the encrypted input data from the input data processing unit via a predetermined bus and retransmits the encrypted input data to the predetermined device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A data retransmission method of encrypting input data and retransmitting the encrypted data to a predetermined device, the method comprising:
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receiving the input data, coding the input data in a format suitable for the predetermined device to generate coded input data, and encrypting the coded input data with a common key to be shared with the predetermined device in a data input stage to generate encrypted input data; and
receiving the encrypted input data via a predetermined bus and retransmitting the encrypted input data to the predetermined device in a data retransmission stage. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. An audio or video (AV) stream information retransmission device for receiving predetermined AV stream information and retransmitting the AV stream information to a predetermined device, the AV stream retransmission device comprising:
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a receiving unit which receives the predetermined AV stream information;
a link protection unit which creates a common key through an authentication process with the predetermined device; and
an encryption unit which encrypts the AV stream information using the common key. - View Dependent Claims (23)
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24. An audio or video (AV) stream information retransmission method of receiving predetermined AV stream information and retransmitting the received information to a predetermined device, the method comprising:
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receiving the predetermined AV stream information;
creating a common key through an authentication process with the predetermined device; and
encrypting the AV stream information using the common key. - View Dependent Claims (25)
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Specification