US 8,478,994 B2 · Method for analyzing coded data streams simultaneously transmitted in IP networks

Abstract

One network protocol (RTP) each, having data packets (dp) comprising an expandable header (KE) is provided for a data stream (ds1 . . . n) encoded in a manner individual to said data stream, and the key information (si1 . . . n) formed in a data stream manner individual to said data stream is inserted into an expandable header (RTPH) of a data packet (dp) of the respective data stream (ds1 . . . n) and transmitted. The key information (sp1 . . . n) is selected in a manner individual to said data stream from the expanded headers (KE) of received data packets (dp) of the respective data stream (ds1 . . . n), and the associated encoded data stream (ds1 . . . n) is decoded by means of at least one piece of selected data stream individual key information (si1 . . . n). The forming and inserting of key information (si1 . . . n) into standard expanded headers (KE) can be performed with little additional expense, thus significantly reducing the expenditure for the analysis or diagnosis of the simultaneously transmitted encoded data streams (ds1 . . . n). Advantageously, the insertion of key information (si1 . . . n) can be activated or initiated only if the diagnosis or analysis and/or the recording of the data streams is currently being performed.

Claims16

Dependent claims

A method for decrypting at least one encrypted data stream containing data packets in which a first data stream is data-stream-specifically generated and data-stream-specifically encrypted according to a network protocol for encrypting and transmitting data streams, comprising:

providing the network protocol defining an extendable header for the data packets;
determining a data packet type in such a way that data packets of the first data stream are discarded by a second component of the communication arrangement when the data packets of the first data stream include key information inserted within the extendable header of the data packets in accordance with the network protocol;
a first component of a communication arrangement generating the key information data-stream-specifically;
the first component inserting the key information into the extendable header of a data packet of the first data stream;
the first component transmitting the data packet of the first data stream to the second component of the communication arrangement via a network connection;
a diagnosis unit recording the data packet of the first data stream;
the diagnosis unit selecting the key information from the header of the received data packet of the first data stream;
and
the diagnosis unit decrypting the data packet of the first data stream using the key information from the header.

6 more elements

An arrangement for decrypting at least one encrypted data stream containing data packets in which a data stream is data-stream-specifically generated and data-stream-specifically encrypted according to a network protocol for encrypting and transmitting data streams, comprising:

a diagnosing unit having memory, a recording unit, a monitoring unit and a decryption unit;
the recording unit recording a first data packet of an encrypted data stream from a first component of a network via a network connection, the encrypted data stream being directed to a second component of the network, the first data packet having an extended header in which key information for encrypting the first data packet was inserted, the key information being generated data stream specifically;
the monitoring unit searching data packets recorded by the recording unit and storing the first data packet upon a determination that the extended header of the first data packet included the key information;
the decryption unit decrypting the first data packet based upon the key information within the extended header of the first data packet, the first data packet being decrypted so that the first data packet is diagnosable or analyzable;
and
wherein the first data packet is a data packet type that is defined by the network protocol in such a way that the first data packet is discarded by the second component in accordance with the network protocol.

3 more elements

Dependencies are inferred from the claim text.

Method for analyzing coded data streams simultaneously transmitted in IP networks

Life of this patent

Method for analyzing coded data streams simultaneously transmitted in IP networks

Life of this patent

Abstract

Claims16