Multi party messaging

Patent metadata

Field	Value
Publication number	US-10659435-B2
Application number	US-201916280324-A
Country	US
Kind code	B2
Filing date	Feb 20, 2019
Priority date	Jul 16, 2012
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

Multi-party messaging is disclosed. A plurality of public keys is requested by a first device from a server, wherein the plurality of public keys is associated with a plurality of recipients. A message containing one or more components is encrypted using a symmetric key. The symmetric key is encrypted, using each of the respective public keys, resulting in a plurality of encrypted symmetric keys. The encrypted message and the encrypted symmetric keys are encapsulated in an encapsulation. The encapsulation is transmitted to the server.

First claim

What is claimed is:

1. A system, comprising:
a processor configured to:
receive a first communication addressed to one or more recipients from a first device, wherein the first communication comprises a first encryption key encrypted by a first public key of at least one of the one or more recipients;
store the first communication in a message table;
determine one or more recipients of the first communication by comparing a hashed representation of one or more recipient identifiers received in the first communication to hashed representations of user identifiers stored in a database;
notify the one or more recipients of the first communication based on the determination of the one or more recipients;
receive a request to access the first communication from a second device that derived the first public key and a first private key, wherein the first private key corresponds to the first public key;
track which of the one or more recipients obtained the first communication; and
delete the first communication when all of the one or more recipients have obtained the first communication; and

a memory coupled to the processor and configured to provide the processor with instructions.

2. The system of claim 1 , wherein the processor is configured to:
set a flag for each of the one or more recipients indicating the arrival of the first communication when notifying the one or more recipients of the first communication.

3. The system of claim 1 , wherein the processor is configured to:
create a record of the first communication for each of the one or more recipients in the message table.

4. The system of claim 3 , wherein the record includes an indication of whether the recipient has accessed the first communication.

5. The system of claim 1 , wherein the processor is configured to:
delete the first communication from the message table after a predetermined time to comply with an expiration time.

6. The system of claim 5 , wherein the first communication is deleted from the message table regardless of whether all of the one or more recipients have accessed the first communication.

7. A method, comprising:
receiving, at a first server, a first communication addressed to one or more recipients from a first device, wherein the first communication includes a first encryption key encrypted by a first public key of at least one of the one or more recipients;
storing, at the first server, the first communication in a memory;
determining, by the first server, one or more recipients of the first communication by comparing a hashed representation of the one or more recipient identifiers received in the first communication to hashed representations of user identifiers stored in a memory of the first server;
notifying, by the first server, the one or more recipients of the first communication based on the determination of the one or more recipients;
receiving, at the first server, a request to access the first communication from a second device that derived the first public key and a first private key, wherein the first private key corresponds to the first public key;
tracking, by the first server, which of the one or more recipients obtained the first communication; and
deleting, by the first server, the first communication when all of the one or more recipients have obtained the first communication.

8. The method of claim 7 , wherein notifying the one or more recipients of the first communication further comprises:
setting, by the first server, a flag for each of the one or more recipients indicating the arrival of the first communication.

9. The method of claim 7 , comprising:
creating a record of the first communication for each of the one or more recipients in a memory of the first server.

10. The method of claim 9 , wherein the record includes an indication of whether the recipient has accessed the first communication.

11. The method of claim 7 , comprising:
deleting the first communication from a memory of the first server after a predetermined time to comply with an expiration time.

12. The method of claim 11 , wherein the first communication is deleted from the first server regardless of whether all of the one or more recipients have accessed the first communication.

13. A non-transitory computer-readable medium comprising instructions that when, executed by at least one processor, perform the steps of:
receiving a first communication addressed to one or more recipients from a first device, wherein the first communication includes a first encryption key encrypted by a first public key of at least one of the one or more recipients;
storing the first communication in a memory;
determining one or more recipients of the first communication by comparing a hashed representation of the one or more recipient identifiers received in the first communication to hashed representations of user identifiers stored in a memory;
notifying the one or more recipients of the first communication based on the determination of the one or more recipients;
receiving a request to access the first communication from a second device that derived the first public key and a first private key, wherein the first private key corresponds to the first public key;
tracking which of the one or more recipients obtained the first communication; and
deleting the first communication when all of the one or more recipients have obtained the first communication.

14. The non-transitory computer-readable medium of claim 13 , comprising instructions for:
setting a flag for each of the one or more recipients indicating the arrival of the first communication when notifying the one or more recipients of the first communication.

15. The non-transitory computer-readable medium of claim 13 , comprising instructions for:
creating a record of the first communication for each of the one or more recipients in a memory.

16. The non-transitory computer-readable medium of claim 15 , wherein the record includes an indication of whether the recipient has accessed the first communication.

17. The non-transitory computer-readable medium of claim 13 , comprising instructions for:
deleting the first communication from a memory after a predetermined time to comply with an expiration time, wherein the first communication is deleted from the memory regardless of whether all of the one or more recipients have accessed the first communication.

Assignees

• Wickr Inc

Inventors

• Statica Robert

Classifications

• H04L9/0825

  using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates · CPC title

• G06F21/62

  Protecting access to data via a platform, e.g. using keys or access control rules · CPC title

• G06F3/04886

  by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus · CPC title

• G06F21/84

  output devices, e.g. displays or monitors · CPC title

• G06F3/0481

  based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance · CPC title