Method and terminal for limited-access receiving of data as well as remote server
AssigneeSwisscom Mobile AG
InventorRudolf Ritter
Life of this patent
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Abstract
A method for limited-access receiving of data is disclosed. In a remote server (5), data for decoding user data are encrypted with the first key, which has been generated on the basis of the user's biometric or key data derived therefrom, and sent as program-accompanying data through a broadcast system. In a terminal (1) of the user, the information received through the broadcast system are decrypted with the second key, that has also been generated on the basis of the user's biometric or key data derived therefrom. The user data are decoded with the received decrypted data for decoding user data and the received user data can be reproduced. The present invention also relates to the remote server (5) and the terminal (1).
Claims23
Method for a method for limited-access receiving of user data, whereas the method has the following method steps:
- (a) a first key for encrypting data and a second key for decrypting the data encrypted with the first key are generated on the basis of the user's biometric key data or key data derived therefrom,
- (b) in a remote server, data for decoding user data are encrypted with the first key,
- (c) the encrypted data for decoding the user data are sent to at least a first terminal of the user,
- (d) the encoded user data are sent through a broadcast system to the user and received in a second terminal of the user,
- (e) in the second terminal of the user, the received data for decoding the user data are decrypted with the second key,
- (f) the user data are decoded with the received and decrypted data for decoding and
- (g) subsequently the received user data are available for the user.
The method of claim 2, wherein as data for decoding the user data, entitlement information (EMM) and control words (ECM) are encrypted.
Remote server containing a program for encrypting data for decoding user data, whereas the data for decoding user data are encrypted with a key generated on the basis of the user's biometric or key data derived therefrom.
Terminal comprising means for generating a key, the key being generated on the basis of the user's biometric key data or key data derived therefrom, and whereas the generated key is used for decrypting the program-accompanying data sent through a broadcast system for decoding the user data.
Dependencies are inferred from the claim text.