METHOD FOR THE PROVISION OF DATA SECURITY

摘要

The present invention concerns a method which makes it possible to sign and/or encrypt a message to be transmitted to a receiver and to reliably ascertain from the message the identity of the sender of the message and the correctness of its contents. In the method, the message is divided into two or more sections. The first section is a header section, to which a sender identification is added. The second section is a data section, to which a check element generated from the contents of the message is appended. Finally, the data section of the messge is signed and/or encrypted so as to allow the sender of the message to be reliably identified. The use of a check element makes it possible to ascertain the correstness of the contents and that the message has been decrypted using the right keys.