CONCEPT FOR COMMUNICATING BETWEEN DIFFERENT ENTITIES USING DIFFERENT DATA PORTIONS FOR DIFFERENT CHANNELS

摘要

A third entity for communicating with a first entity and a second entity comprises a message processor for processing a first message and a second message received from a first entity and from a second entity to obtain a first portion a second portion of a data entity. A data assembler assembles the portions to obtain the data entity by using a predefined assembly rule or by using an assembly information received. The third entity also comprises a data entity processor for decrypting data blocks of the first and second messages to obtain decrypted data blocks and for matching the decrypted data blocks to determine whether or not to trigger a transaction. The data entity is a key. Decrypting is made using the key, the data blocks being encrypted with the key.