Method and device for securely transmitting data

摘要

Cryptographic methods are used at the application level, unlike known methods using point-to-point connections that can only be sufficiently secured at the transport level. Integrity protection and confidentiality protection of data are implemented at the application level for use in network technology.

主权项

1. A method for secure transmission of data, comprising:
providing, by a programmed hardware processor, data connections from different start components via at least one intermediate component to a common target component, in each case, at least one of the different start components, the at least one intermediate component and the common target component are in an automation network; grouping together, by the programmed hardware processor and carried out by at least one message exchange at the application layer, intermediate components, dependent upon an item of cryptographic information, to form a grouped intermediate component; and transmitting, by the programmed hardware processor, the data by an extended manufacturing-message-specification protocol from the different start components via the grouped intermediate component to the common target component.