Patent Document ID: 20070074037
Application ID: 11304873
Patent Status: 0

Claim One:
1. Method for signing a data package using a signing apparatus, the signing apparatus being assigned a binary identification code, the method for signing comprising the steps of: providing a set of node keys and a check value for the data package, the node keys being different from each other and each node key of the set of node keys being identifiable by a node key number and wherein the check value for the data package being derived from the data package or an carrier identification code of an information carrier the data package is stored on; determining a signature block having a plurality of signature fields, wherein each of the signature fields is identifiable by a signature field number, wherein the signature field having a first signature field number comprises a first encrypted version of the check value, the first encrypted version of the check value being determined using the node key having a first node key number as encryption key and wherein the signature field having a second signature field number comprises a second encrypted version of the check value, the second encrypted version of the check value being calculated using the node key having a second node key number as encryption key, wherein the first signature field number corresponds to the first node key number and the second signature field number corresponds to the second node field number, wherein the step of determining is performed in the signing apparatus; and providing the binary identification code of the signing apparatus and the signature block in order to sign the data package.