US 12,445,420 B2
Message encryption method and electronic device
Dohoon Kim, Suwon-si (KR); Sewon Park, Suwon-si (KR); and Jookyoung Park, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jan. 3, 2023, as Appl. No. 18/149,460.
Application 18/149,460 is a continuation of application No. PCT/KR2021/007793, filed on Jun. 22, 2021.
Claims priority of application No. 10-2020-0083309 (KR), filed on Jul. 7, 2020; and application No. 10-2020-0166056 (KR), filed on Dec. 1, 2020.
Prior Publication US 2023/0155990 A1, May 18, 2023
Int. Cl. H04L 9/40 (2022.01); H04L 5/00 (2006.01)
CPC H04L 63/065 (2013.01) [H04L 5/0055 (2013.01); H04L 63/00 (2013.01); H04L 63/0435 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A message server comprising:
a communication circuit configured to communicate with a first electronic device and a second electronic device;
memory configured to store security information related to at least one electronic device; and
a server processor operatively connected to the communication circuit and the memory,
wherein the server processor is configured to:
acquire a first message encrypted based on first security information of the second electronic device from the first electronic device and transmit the first message to the second electronic device,
acquire a decryption failure signal for the first message from the second electronic device and transmit the decryption failure signal to the first electronic device,
acquire second security information of the second electronic device from the second electronic device and transmit the second security information to the first electronic device,
receive a second message encrypted based on the second security information from the first electronic device, and
transmit the received second message to the second electronic device.