RU98101243A - USE ENCRYPTION SERVER TO ENCRYPT MESSAGES - Google Patents

Claims (10)

1. An encryption method in a communication system, characterized in that a digital data message is generated in the user’s communication device, the digital data message is encrypted using the first key to generate the first encrypted message, the user identifier and the first recipient identifier are attached to the first encrypted message to generate an augmented the first encrypted message, the augmented first encrypted message is encrypted using the second key to generate a second encrypted message messages, and transmit the second encrypted message to the encryption server, and the encryption server is not the first recipient.  2. The method according to p. 1, characterized in that the first key is the private key associated with this user, and the second key is the public key associated with the encryption server.  3. The method according to p. 1, characterized in that at the stage of joining additionally attach the identifier of the second recipient to the first encrypted message, to generate augmented first encrypted message.  4. The method according to p. 1, characterized in that the encrypted server receives the augmented second encrypted message, determines the second encrypted message, the user identifier and the first recipient identifier from the augmented second encrypted message, decrypt the second encrypted message using the third key to generate the first encrypted messages, encrypt the first encrypted message with a fourth key to generate a third encrypted message and transmit the third encrypted message ix the first recipient.  5. The method according to p. 4, characterized in that at the stage of joining additionally attach the identifier of the second recipient to the second encrypted message to generate an augmented second encrypted message.  6. The method of claim 4, wherein the first key is a private key associated with the user, the second key is a public key associated with the encryption server, the third key is a private key associated with the encryption server, and the fourth key is the public key associated with the first recipient.  7. The method according to any one of paragraphs. 4, 5 or 6, characterized in that the user identifier is encrypted using the second key before the step of joining.  8. An encryption method in a communication system, characterized in that the first encrypted message is received in the encryption server, the encrypted message is decrypted using the first key to generate the decrypted message containing the second encrypted message, the sender identifier of the first encrypted message and the identifier of the first recipient, the second encrypted the message, the sender ID and the first recipient identifier from the decrypted message encrypt the second encrypted with communication and the identifier of the sender with a second key to generate a third encrypted message and transmit the third encrypted message to the first recipient.  9. The method of claim 8, wherein the first key is a private key associated with the encryption server, and the second key is a public key associated with the first recipient.  10. The method according to any one of paragraphs. 8, 9, characterized in that if the second identifier of the second recipient is part of the decrypted message, then the second encrypted message and the sender identifier are encrypted in the encryption server with the third key to generate the fourth encrypted message and the fourth encrypted message is transmitted to the second recipient.