Determining the not - art which tail authorship of digital messages in high performance - applications

摘要

The invention relates to a method for processing of information by means of a not - art which tail authorship of a message by a second communication partner (b). It is a second message (m₂) for the second message and a second message authentication code (mac_2A) , received by a first communication partner (a) was sent. It is the authenticity of the second message (m₂) with the aid of the second message authentication code (mac_2A) it is tested, wherein the second message (m₂) a first message (m₁) and the first message authentication code (mac_1A) comprises. It is the first message (m₁) and the first message authentication code (mac_1A) on a trusted third entity (ttp) for checking the authenticity of the first message (m₁) transmits. It is a result of the check, (m₄) the trusted third entity (ttp) is received, which are not - art which tail authorship of the first message (m₁) for the first communication partner (a) is determined if the trusted third entity (ttp) the authenticity of the first message (m₁) recognises.