METHOD, TERMINAL, AND NETWORK SERVER FOR INFORMATION ENCRYPTION AND DECRYPTION AND KEY MANAGEMENT

Title:

METHOD, TERMINAL, AND NETWORK SERVER FOR INFORMATION ENCRYPTION AND DECRYPTION AND KEY MANAGEMENT

Document Type and Number:

WIPO Patent Application WO/2016/062157

Kind Code:

A1

Abstract:

A method, terminal, and network server for information encryption and decryption and key management. The method comprises: a transmitting terminal creates a random key on a network server (S101); the transmitting terminal encrypts to-be-transmitted information either on the basis of a common key negotiated with a receiving terminal and of the random key or simply on the basis of the random key to produce encrypted ciphertext (S201); and, the transmitting terminal transmits the encrypted ciphertext to the receiving terminal (S103). By utilizing the random key stored on the network server either independently or in combination with the common key for encryption or decryption, the receiving terminal queries the server for the random key, and only when the random key is acquired can decryption of the encrypted ciphertext be completed, thus increasing the security in information transmission for the terminals. In addition, by deleting or freezing the random key on the network server, the transmitting terminal prevents the receiving terminal from acquiring the random key and thus from decrypting, thus allowing the terminal to remotely control destruction of encrypted information.

Inventors:

CHEN LU (CN)

Application Number:

PCT/CN2015/087535

Publication Date:

April 28, 2016

Filing Date:

August 19, 2015

Export Citation:

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Assignee:

ZTE CORP (CN)

International Classes:

H04L29/06

Foreign References:

CN1929369A	2007-03-14
CN103595793A	2014-02-19
CN104506483A	2015-04-08
US6567914B1	2003-05-20

Other References: