Method and system for secure exchange of an email message

摘要

The method involves converting an E-mail message provided for the exchange into a document, which exhibits a standard format, with a decryption function. The converted document is transmitted as a message supplement. An interpretable and/or executable program code, an invisible meta-information region and a unique identification number are included by the document. The document is encoded by a symmetric coding, where a password and a certificate of a sender (1) are transmitted with the document. An independent claim is also included for a system for exchanging an E-mail message.