Method for transmission of e.g. video data for engine control modules of motor car, involves integrating digital signature in content file, and downloading another content file at service and production servers and/or provider network

摘要

The method involves receiving a content file and an instruction file from an original part manufacturer-development network (14), where the instruction file includes a parameter set. Another parameter set is determined, and another instruction file is produced based on the former set. A signature file is produced by a signature server (18) based on the latter instruction file. A digital signature is integrated in the content file for producing another content file. The latter content file is downloaded at a service server (20), a production server (22) and/or a provider network.