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Communication system for providing the delivery of e-mail message

  • US 8,949,601 B2
  • Filed: 12/29/2006
  • Issued: 02/03/2015
  • Est. Priority Date: 12/29/2005
  • Status: Active Grant
First Claim
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1. A communication system, comprising:

  • a sender node;

    a recipient node; and

    a plurality of control entities in communication with the sender node and the recipient node;

    wherein the sender node is adapted to generate an electronic message to be transmitted to the recipient node and to send a sending information message to one of the control entities indicating that the electronic message is transmitted to the recipient node;

    wherein the recipient unit node is adapted to receive the electronic message and to send a receipt information message to the control node, the receipt information message indicating that a user of the recipient node has received the electronic message;

    wherein the sender node is adapted to generate the electronic message as an encrypted electronic message by encrypting electronic data;

    wherein a first control entity is communicatively coupled to the sender node in a manner that a transmission of a sender message from the sender node to the first control entity is indicative of an identity of the sender node;

    wherein the sender message includes decryption key information;

    wherein a second control entity is communicatively coupled to the first control entity;

    wherein the first control entity is adapted to forward the sender message to the second control entity in a manner that the second control entity is not aware of the identity of the sender node;

    wherein a third control entity is communicatively coupled to the recipient node in a manner that a transmission of a recipient message between the recipient node and the third control entity is indicative of an identity of the recipient node;

    wherein the recipient message comprises a decryption key adapted to decrypt the encrypted electronic message;

    wherein the third control entity is communicatively coupled to the second control entity;

    wherein the third control entity is adapted to exchange data with the second control entity in a manner that the second control entity is not aware of the identity of the recipient node;

    wherein the second control entity is a clearing server adapted to manage a decryption key transaction in an anonymous way; and

    wherein the first control entity is a provider-server and the third control entity is a provider-server.

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