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1. (WO2018176781) INFORMATION SENDING METHOD, INFORMATION RECEIVING METHOD, APPARATUS, AND SYSTEM

Pub. No.:    WO/2018/176781    International Application No.:    PCT/CN2017/104580
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Sep 30 01:59:59 CEST 2017
IPC: H04L 29/06
H04W 8/22
Applicants: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
广东欧珀移动通信有限公司
Inventors: ZHU, Zhonglei
朱忠磊
Title: INFORMATION SENDING METHOD, INFORMATION RECEIVING METHOD, APPARATUS, AND SYSTEM
Abstract:
The present application discloses an information sending method, an information receiving method, an apparatus, and a system, and relates to the field of mobile terminals. The information sending method comprises: a terminal device acquiring plaintext information to be sent; the terminal device generating a symmetric key; the terminal device encrypting the plaintext information by using the symmetric key to obtain first ciphertext information; the terminal device acquiring an asymmetric encrypted public key; the terminal device encrypting the symmetric key by using the asymmetric encrypted public key to obtain second ciphertext information; and sending the first ciphertext information and the second ciphertext information to a service device. According to the application, even if an asymmetric encrypted public key in a mobile phone is leaked, a malicious person cannot decrypt the asymmetric encrypted public key to obtain a symmetric key and plaintext information because of the asymmetric encryption characteristics, thereby ensuring the security of communication between the terminal device and the service device.