Patent ID: 8843746

Claim:
A method for secure transmission of at least one electronic message from a first terminal of a first user to at least one second terminal of a second user comprising: generating the electronic message at the first terminal; receiving the electronic message by at least one second terminal, with the electronic message being transmitted by an infrastructure for legally binding transmission of electronic messages from the first terminal to the second terminal; placing the electronic message in an encrypted form, requiring decryption, using a first security module connected to the first terminal, by at least one of encryption and signing of the electronic message before the electronic message is transmitted by the infrastructure from the first terminal, and then transmitting the electronic message in said encrypted form from said first terminal to a provider and from the provider to the second terminal; decrypting the encrypted form of the transmitted electronic message by a second security module connected to the second terminal; in at least one of the first security module and the second security module, identifying a user with a user login registered in the respective first or second security module thereof, and requiring a successful user login before permitting at least one of said placing of the electronic message in encrypted form and said decrypting the encrypted form of the transmitted message; and via the infrastructure for legally binding electronic messages, implementing a registration service for new users, an authentication service for registered users, a sending service for electronic messages to be sent, a receiving service for electronic messages to be received, and a verification service for at least one of determining and verifying recipient addresses.