Siemens Aktiengesellschaft

Siemens Healthineers Ag

Siemens Mobility Gmbh

Siemens Enterprise Communications Gmbh & Co. Kg

Tiago Gasiba

Martin Wimmer

Jorge Cuellar

Thomas Stockhammer

Wen Xu

Jürgen Pandel

Matthias Seifert

Jorge Ricardo Cuellar Jaramillo

Santiago Reinhard Suppan

Methods and apparatuses relate to transferring user-specific data that can be validated via a hash tree. If not all of the underlying data of the hash tree is transferred, then in place of the non-transferred data, a suitable hash value from the hash tree can be transferred. The data to be transferred includes at least one reference data element which is suitable for checking the authenticity of the sender.

Method and apparatus for trustworthy provision of data elements and method for checking a dataset with a plurality of data elements

A method and a system for fault-correcting transfer of a dataset from a first network into a second network via a unidirectional communication unit, the receiving apparatus having a limited computing and main memory capacity is provided. The dataset is divided into partial datasets and are each coded by adding at least one correction mark. The marks and correction marks are decoded repeatedly in the second network, wherein marks and correction marks associated with a first encoded partial dataset are stored in a main memory, marks and correction marks associated with other encoded partial datasets are buffered in a background memory, and the first coded partial dataset is decoded, and then the previously received marks and/or correction marks of one of the other coded partial datasets are shifted from the background memory into the main memory. The dataset is reproduced from the decoded partial datasets in the second network.

Method and system for the error-correcting transmission of a data record via a unidirectional communication unit

Provided is a method for sending digital data over a number of channels wherein a sender performs the following steps: encoding source data having a first number of source symbols, the encoding being such that an error correction code is generated from the source data, the error correction code comprising a second number of repair symbols higher than the first number as well as identifiers where each identifier is assigned to a corresponding repair symbol, the error correction code adding redundancy to the source data; encrypting each repair symbol by an encryption process which is based on a shared secret between the sender and a receiver, where the encryption process for a respective repair symbol depends on the identifier assigned to the respective repair symbol; feeding pairs of the encrypted repair symbols and the assigned identifiers to the number of channels which are connected to the receiver.

Method for sending digital data over a number of channels

A computer-implemented method for error-correction-encoding and encrypting of a file is provided. The file is split into at least two blocks. The first block is encrypted using a given encryption key. The encrypted first block is encoded twice using a first and second forward error correction code of the first block. Each subsequent block is encrypted by performing an algebraic operation. The encrypted block is encoded twice using a first and second forward error correction code for this block, wherein a cryptographic indexing function provides a set of indices used by the second forward error correction code to produce the second encoded chunk. The first encoded chunks of each encrypted block are outputted. The computer-implemented method enables secure transmission of a file content between low power devices.

Computer-implemented method for error-correction-encoding and encrypting of a file

A determination of indexes allocated to error correcting symbols is provided. Encoded code symbols are generated by means of a generator matrix of a block code from number of source symbols and the encoded transmission errors occur in the received code symbols, the indexes of the error correcting symbols are determined by unambiguously identifying the area of the encoded code symbols by means of first and second parameters, which can be requested in the form of at least one error correcting symbol by the receiving device from the transmitting device for reconstructing the source symbols in an error-free manner.

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Munich, Germany

Tiago Gasiba