METHOD FOR THE FUNCTIONALLY SECURE IDENTIFICATION OF A CONNECTION, AND ASSEMBLY

The aim of the invention is to functionally securely transfer data in a two-sided data exchange of safety-related data (FB-Data, FA-Data) between two communication partners (A, B). This aim is achieved in that a mapping is defined, which assigns to a consumer ID a provider ID of the same end point in the case of each bidirectional connection, and said mapping is made known to the two end points a priori. For example, said mapping could consist of the one's complement or alternatively of the two's complement. The connection between the data provider and the data consumer is established as described above. The data consumer receives the address identification of the data provider by means of an additional side channel, for example. After the connection has been established, the identification of the data provider can be securely checked. 为了在两个通信参与者(A、B)之间进行安全导向数据(FB-Data、FA-Data)的双侧数据交换时功能安全地传输数据而提出限定映射，该映射将同一端点的提供者标识分配给每个双向连接的用户标识，并且使该映射预先对两个端点已知。例如，该映射可以由一的补码或由二的补码组成。数据提供者与数据用户之间的连接在此如上所述地建立。数据用户例如通过附加的侧信道从数据