DISTRIBUTED PROCESSING OF A PRODUCT ON THE BASIS OF CENTRALLY ENCRYPTED STORED DATA

摘要

The invention relates to a system for the encrypted storage of product data of a product having an attached tag, centrally on a product data server, and for reading out the centrally stored product data by means of production stations that should process the product. The product data are encrypted by means of a document key, which in turn is encrypted by means of a public key of the tag. The tag contains information for accessing the centrally stored product data. When a product station accesses product data on the product data server, the tag performs an encryption changeover of the document key from the key system of the tag to the key system of the accessing production station.