EP1081884A2 - Verfahren zur Übertragung von verschlüsselten Daten über ein Rundfunknetz, wobei die Entschlüsselungsdaten über eine Duplex-Fernmeldeverbindung angefordert werden - Google Patents
Verfahren zur Übertragung von verschlüsselten Daten über ein Rundfunknetz, wobei die Entschlüsselungsdaten über eine Duplex-Fernmeldeverbindung angefordert werden Download PDFInfo
- Publication number
- EP1081884A2 EP1081884A2 EP00118546A EP00118546A EP1081884A2 EP 1081884 A2 EP1081884 A2 EP 1081884A2 EP 00118546 A EP00118546 A EP 00118546A EP 00118546 A EP00118546 A EP 00118546A EP 1081884 A2 EP1081884 A2 EP 1081884A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- transmission
- user
- decryption
- encrypted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
- H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/90—Wireless transmission systems
- H04H60/91—Mobile communication networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/93—Wired transmission systems
- H04H60/94—Telephonic networks
Definitions
- the invention is based on a method for transmission of encrypted data or according to the genus of independent claim.
- DAB Digital Audio Broadcasting
- This mode of operation is designated by the English term conditional access, ie a privileged one Access to these programs and / or data
- these programs and / or data are encrypted, the authorized recipients either being given a key to decrypt the programs, or have a storage option on their recipient, such as a smart card, at least which contains data in order to decrypt a key or even to decrypt the entire program and / or the data.
- a smart card has a microprocessor which stores, processes and manages information.
- a smart card is high by means of a secret number and / or encryption techniques Added level of security t.
- the customer will be expired obtain a smart card that is still valid or extend the validity of your smart card.
- the invention is based on already uses existing infrastructure, because both a broadcast distribution system as well as various Mobile radio systems are already installed and can be used become.
- duplex transmission method a record of a user is transmitted and that by means of Broadcasting system then continuously updated Additional data are transmitted using this record be used. This makes it possible for a user to only once using a duplex transmission method receives it and then by means of the additional data that about a Broadcast transmission system are being updated. This method of updating is for both Data service providers as well as extremely for the customer inexpensive.
- the user when he the decrypt encrypted data or if he wants one Want to load the data record using the duplex transmission method selects the data provider and yourself either the key or the record of that Data service provider loads. This means that the user is completely free to determine when, where and what he will use for data services would like to. It should be noted that such data services and encrypted data from different Data service providers are offered so that the user is on an opportunity base that he desires Select data service provider.
- both the key and also the data set that the user can access using the Duplex transmission method loads a time-limited Is valid. This makes it for the data service provider possible its data service for a certain time offer and calculate. It is also the user transparent how long the data service he wants is available to him.
- the Data service provider the user the transmission time for the Decryption data and / or the data set calculated, so that the user has a corresponding one for the period of validity Amount for the transmission time of this necessary data in order to use the data service paid. Then this is a very simple billing system for a data service provider, because by the amount that he is for the transmission time of the Key or record requests, at the same time rented out his data service. In addition, this is Billing system also for users of large Transparency, because he can, for example, if he uses a cellular network, the cost of the Data service can take.
- FIG. 1 shows a method for transmission of encrypted data
- Figure 2 shows a method for Transfer of records.
- DAB is a digital broadcasting process that is particularly suitable for mobile reception.
- orthogonal frequency division multiplex in particular a frequency selective attenuation in their Effect on the transmitted signal greatly reduced.
- the Signal generated by means of orthogonal frequency division multiplexing is transmitted at DAB on the transmission side to several Frequencies distributed, with the signal components on the different frequencies do not affect each other. This behavior is described as orthogonal. Thereby it is achieved that a frequency-selective attenuation only Signal component disturbs that on the frequency that one is subject to strong damping, is transmitted.
- the signal in the transmitter is one Channel coding subjected to the original data additional data are added so that errors in the Recipients using this additional data can be corrected.
- DAB also has the property that besides the audio data also other data at the same time be transferred, the size and division of this Data can be freely designed.
- DAB has a frame structure which has frame fields by means of which a receiver recognizes which content is transmitted in the respective frame becomes. For example, there is a frame Information that from a particular data service provider Data for a navigation system included in this frame are. If the recipient searches for this data, the recipient evaluates Recipients choose this frame to get the data.
- DVB digital video Broadcasting
- DRM Digital Radio Monial
- Digital cellular cellular transmission methods such as GSM (Global System for Mobile Communication) or UMTS (Universal Mobile Telecommunication System) have in Comparison to the broadcasting method Property that connects to specific users is produced and not an entire area is served, without the individual users in this area directly to select. So users have to dial directly here be while in a broadcast transmission process every switched on receiver receives the data.
- GSM Global System for Mobile Communication
- UMTS Universal Mobile Telecommunication System
- Duplex transmission methods have the property that Data is transmitted in both directions, i.e. that communicating stations both transmitters and Are recipients. Telephone and cellular connections are Examples of this.
- Broadcast transmission methods are simplex transmission methods, since only one station sends and many received other stations.
- Radio transmission systems become a so-called half duplex used, i.e. if one station transmits, the other can Station only received while using a duplex transmission method send both stations simultaneously can.
- a data service is used only by a certain group of recipients made accessible with encryption reached. Encryption is used here in a way performed so that the data with pseudo-random numbers can be combined, these pseudo-random numbers with a pseudo-random generator and where this pseudo-random generator with one Initialization word by a random number generator is generated, initialized. Is a random number generator for example a noise generator that uses random numbers can be generated.
- Random numbers can be generated once Random numbers are stored in a memory at Need for initialization of the pseudo random generator to be used.
- Pseudo-random numbers have the property that if one knows the initialization word, all subsequent pseudo-random numbers can be calculated because the Calculation rule with which the pseudo random generator generates the Generate pseudo random numbers known to the recipient.
- the Initialization word is known in the receiver. So it serves as a key. Then the receiver can use a pseudo-random generator generate the same pseudo-random numbers and by further linking these pseudo-random words with the encrypted data this data decrypt again.
- FIG. 1 is a method for the transmission of encrypted data shown as a flow chart.
- Process step 1 starts the process.
- Method step 2 selects a user using a duplex transmission method a data service provider to help from a key to a data service provider Request decryption of the encrypted data.
- the data service provider by means of the duplex transmission method the key to Decryption of the encrypted data with a Broadcast transmission system are sent, transmitted.
- a transceiver station for a duplex transmission method connected to a radio receiver, so that a data transfer from the transmitting / receiving station to Radio receiver is possible. So the key is from received by the transceiver and sent to the Hand over the radio receiver so that the radio receiver the can decrypt encrypted data.
- the user chooses the data service provider by direct Inputs on his radio receiver, or the Broadcast receiver has a list of different ones Saved data service providers from which the user selects a data service provider and the radio receiver then automatically this data service provider using the Sending / receiving station selected.
- method step 4 the user receives using a Broadcast receiver the encrypted broadcast data.
- Method step 5 the user decrypts using his Key the received encrypted data in the Radio receiver.
- step 6 the user provides the decrypted Data using acoustic and / or optical means for Representation in order to view or read them.
- the data is e.g. used in a navigation system to to display the current traffic situation on a display in order to the fastest possible route for a driver to calculate his goal and to give the driver his own to show the optimal way to his goal.
- step 7 it is checked whether the key is still there is valid, with a key for a predetermined time Is valid, i.e. the user checks using his Radio receiver, whether the time has already been reached which of the keys loses its validity. For that points the radio receiver has a chronometer. Is the Keys still valid, are again in step 4 receive encrypted data. The key is no longer valid, it is checked in step 8 whether the user is still interested in this data service. This expresses the User by input on his radio receiver. Is this the case is in process step 2 again via the Duplex transmission method of data service providers selected to get a new key, the Radio receiver the connected transceiver station activated with which the data service provider is dialed. If the user is no longer interested in this data service use, the method is ended in method step 9.
- the GSM transmission method is used here as a duplex transmission method used and as Broadcasting procedure DAB.
- a GSM send / receive station integrated in a DAB receiver or connected.
- the DAB receiver then receives from the GSM transceiver the key he used to Decryption of the encrypted data received used.
- FIG. 2 shows a further development of the invention Process for the transfer of data sets as a flow chart shown.
- Method step 20 requests a user via a duplex transmission system a record of one Data service provider.
- the user either chooses again directly to the respective data service provider, or the user selects one in the radio receiver stored list a data service provider on what the radio receiver by means of a connected transmitting / receiving station the selected data service provider selects to load the data set.
- the user receives the Duplex transmission method the requested record from the data service provider, the data record using the Transceiver station is received and then to the connected radio receiver is transmitted.
- the user uses the received one Record the data with acoustic and / or means optical representation that the radio receiver has, to represent.
- a navigation system initialized, whereby in addition to the distance data now current traffic data are added to a to determine the optimal way to a goal.
- the user receives using his Broadcast receiver encrypted additional data with which the User in step 25 his data set updated. So the navigation system always has the current traffic data. For example, the Existence of a traffic jam can be recognized with the original record would not have been recognized. To the enable privileged access to this additional data, are decryption data in the original record included with which the encrypted additional data can be decrypted.
- method step 26 it is determined whether the data record is still valid, i.e. a record that the user of the Data service provider receives only one in time given validity.
- This is the radio receiver by means of a chronometer, which the radio receiver having. This enables the data service provider to: sell its data service on an opportunity basis can without having to have a fixed customer base.
- The is a method currently used by telephone companies (Call-by-Call) and Internet access providers (Internet-by-Call) to offer.
- the customer pays by transferring the original Record for the given time, how long it the Can use data service. This is done by the Data service providers have a specific price for that Transmission via the duplex transmission system. At a duplex transmission method as it is a Is cellular transmission process, this happens through Determination of telephone charges. This also means the price which the customer has to pay for the data service to the customer fully transparent.
- Step 26 If it is now determined in step 26 that the Data record is still valid, then in step 24 continued to receive additional data to the original record continues to be up to date hold. If the data record is no longer valid, in Method step 27 checks whether the user has a new one Wishes to load record from data service provider, where the user now also selects a new data service provider can choose. If this is the case, then in Method step 21 by the user via the duplex transmission system a new data set using the transceiver station requested. If the user is not interested more on this data record, then in method step 28 the proceedings ended.
- the GSM mobile radio system for the Duplex transmission method used and the DAB broadcast transmission method for the distribution of Additional data.
- This method is particularly suitable for Navigation systems.
- the user loads a data record, the current one Traffic data. Via a broadcast transmission system then continuously updated data is received to the Renew data set for the navigation system.
- duplex transmission methods are used to either the key to decrypt the encrypted data to receive or to receive the record.
- analog broadcasting method for the transmission of Data suitable if, for example, an additional digital Signal for the transmission of data with the analog Broadcast signals is transmitted.
- the well-known radio data System is an example of this.
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims (7)
- Verfahren zur Übertragung von verschlüsselten Daten, wobei die verschlüsselten Daten mittels eines Rundfunkübertragungsverfahrens zu Nutzern übertragen werden (4), dadurch gekennzeichnet, daß Entschlüsselungsdaten mittels eines Duplex-Übertragungsverfahrens, insbesondere eine Mobilfunk- oder Telefonverbindung, von einem Nutzer durch Anwahl eines Datendienstaabieters angefordert werden (2), daß die Entschlüsselungsdaten vom Datendienstaabieter zu dem Nutzer mittels des Duplex-Übertragungsverfahrens übertragen werden (3) und daß mit den Entschlüsselungsdaten die vom Nutzer mittels des Rundfunkübertragungsverfahrens empfangenen verschlüsselten Daten entschlüsselt werden (5).
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Entschlüsselungsdaten für eine vorgegebene Zeit zur Entschlüsselung der verschlüsselten Daten benutzt werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß dem jeweiligen Nutzer Übertragungszeit für die Übertragung der Entschlüsselungsdaten bei dem Duplex-Übertragungsverfahren in Rechnung gestellt wird, so daß damit die Bereitstellung der verschlüsselten Daten und der Entschlüsselungdaten bezahlt wird.
- Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß Datensätze mittels des Duplex-Übertragungsverfahrens zu einem jeweiligen Nutzer übertragen werden (22), daß aktuelle, verschlüsselte Zusatzdaten mittels des Rundfunkübertragungsverfahrens zu den Nutzern übertragen werden (25), daß die verschlüsselten Zusatzdaten mittels Entschlüsselungsdaten, die die Datensätze aufweisen, entschlüsselt werden und daß die entschlüsselten Zusatzdaten zusammen mit den Datensätzen von dem Nutzer genutzt werden (25).
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Datensätze vom jeweiligen Nutzer angefordert werden (21).
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Datensätze von den Nutzern eine vorgegebene Zeit genutzt werden (26), worauf dann gegebenenfalls ein neuer Datensatz mittels des Duplex-Übertragungsverfahrens vom Nutzer angefordert und empfangen wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Übertragungszeit für die Übertragung der Datensätze bei dem Duplex-Übertragungsverfahren dem jeweiligen Nutzer in Rechnung gestellt wird, so daß die Datensätze und die Zusatzdaten vom jeweiligen Nutzer bezahlt werden.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999141929 DE19941929A1 (de) | 1999-09-03 | 1999-09-03 | Verfahren zur Übertragung von verschlüsselten Daten |
| DE19941929 | 1999-09-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1081884A2 true EP1081884A2 (de) | 2001-03-07 |
| EP1081884A3 EP1081884A3 (de) | 2005-11-02 |
Family
ID=7920604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00118546A Withdrawn EP1081884A3 (de) | 1999-09-03 | 2000-08-25 | Verfahren zur Übertragung von verschlüsselten Daten über ein Rundfunknetz, wobei die Entschlüsselungsdaten über eine Duplex-Fernmeldeverbindung angefordert werden |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1081884A3 (de) |
| DE (1) | DE19941929A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1248221A2 (de) * | 2001-04-04 | 2002-10-09 | RITTER, Rudolf | Portfolioverwaltungssystem und Verfahren zur Portfolioverwaltung mittels DAB |
| WO2004066100A2 (en) | 2003-01-22 | 2004-08-05 | Qualcomm Incorporated | System and method for controlling broadcast multimedia using plural wireless network connections |
| EP1903696A1 (de) * | 2006-09-25 | 2008-03-26 | MAGNETI MARELLI SISTEMI ELETTRONICI S.p.A. | Navigationssystem mit einem Rundfunkempfänger und mobilen Endgerät zur Nutzung von Multimedia-Inhalten mit beschränktem Zugriff |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4218256B2 (ja) * | 2002-05-02 | 2009-02-04 | 富士ゼロックス株式会社 | データ転送方法及びシステム |
| DE10246987A1 (de) * | 2002-10-02 | 2004-04-15 | Deutsche Telekom Ag | Verfahren und System zum Empfang und zum Bezahlen von Inhalten |
| DE10251890A1 (de) * | 2002-11-07 | 2004-05-19 | Vodafone Holding Gmbh | Verfahren und System zum elektronischen Übertragen von Informationsdaten |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4424380C2 (de) * | 1994-07-13 | 1998-03-12 | Deutsche Telekom Mobil | Verfahren und Anordnungen zur Übertragung einer Aufforderung zu einer Rundfunk-Sendeeinrichtung zur Sendung von Entschlüsselungsinformationen |
| US5822324A (en) * | 1995-03-16 | 1998-10-13 | Bell Atlantic Network Services, Inc. | Simulcasting digital video programs for broadcast and interactive services |
-
1999
- 1999-09-03 DE DE1999141929 patent/DE19941929A1/de not_active Ceased
-
2000
- 2000-08-25 EP EP00118546A patent/EP1081884A3/de not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1248221A2 (de) * | 2001-04-04 | 2002-10-09 | RITTER, Rudolf | Portfolioverwaltungssystem und Verfahren zur Portfolioverwaltung mittels DAB |
| WO2004066100A2 (en) | 2003-01-22 | 2004-08-05 | Qualcomm Incorporated | System and method for controlling broadcast multimedia using plural wireless network connections |
| EP1590896A4 (de) * | 2003-01-22 | 2009-11-04 | Qualcomm Inc | System und verfahren zur steuerung von rundgesendeten multimedia unter verwendung mehrerer drahtloser netzwerkverbindungen |
| US7925203B2 (en) | 2003-01-22 | 2011-04-12 | Qualcomm Incorporated | System and method for controlling broadcast multimedia using plural wireless network connections |
| US9083475B2 (en) | 2003-01-22 | 2015-07-14 | Qualcomm Incorporated | System and method for controlling broadcast multimedia using plural wireless network connections |
| US10855385B2 (en) | 2003-01-22 | 2020-12-01 | Qualcomm Incorporated | System and method for controlling broadcast multimedia using plural wireless network connections |
| EP1903696A1 (de) * | 2006-09-25 | 2008-03-26 | MAGNETI MARELLI SISTEMI ELETTRONICI S.p.A. | Navigationssystem mit einem Rundfunkempfänger und mobilen Endgerät zur Nutzung von Multimedia-Inhalten mit beschränktem Zugriff |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1081884A3 (de) | 2005-11-02 |
| DE19941929A1 (de) | 2001-03-15 |
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