Samsung Electronics Co., Ltd.

Baeeun Jung

Dong Hoon Lee

Jung Yeon Hwang

Tae-Chul Jung

Jong Hwan Park

Weon Il Jin

Killyeon Kim

Maeng Hee Sung

Jong In Lim

Venkatesh Gowni Ramakrishna

Kyu Young Ohoi

Rohit Bendre

Heejean Kim

A plurality of electronic devices can share a single phone number with each other. One of the electronic devices includes a display, a communication circuit, a processor operatively connected to the display and the communication circuit, and a memory operatively connected to the processor and configured to store a plurality of call logs. The memory stores instructions causing, when executed, the processor to receive a call request via the phone number, to transmit a first call log associated with a missed call to a server in response to a stopped reception of the call request, to receive a first response signal regarding transmission of the first call log from the server, to store the first call log in the memory, based on the first response signal, to receive a push signal from the server, and to update the first call log stored in the memory, based on the push signal.

Electronic device and method for synchronizing call logs

A broadcast encryption method and a broadcast decryption method. The broadcast encryption method includes generating a message encryption key using a public key and a secret key generated by using a Strong Diffie-Hellman tuple; encrypting a message by the message encryption key; and generating a message header using a sum of a plurality of Strong Diffie-Hellman tuples corresponding to an authorized user group. Accordingly, a transmission amount and a storage amount can be reduced when a broadcast encryption message is transmitted.

Broadcast encryption method and broadcast decryption method thereof

Growing community of inventors

Suwon-si, South Korea

Baeeun Jung