US 2020/0007320 A1 · Key Encryption Methods, Apparatuses, and Systems

Abstract

Key encryption methods, apparatuses and systems are disclosed in the embodiments of the present disclosure. A client does not store an encryption algorithm used for encrypting a key, but only stores an information header encrypted by the encryption algorithm, so that an attacker cannot directly obtain the encryption algorithm that is used for decrypting the information header even if the client is attacked, thus improving the security of the key in the client. When the key is needed to be used to encrypt obtained data, the client can use the stored first information header to request the key from the server, and the server having a higher security restores the key based on a stored first encryption algorithm. The client can encrypt the data using the key obtained from the server, so that the client can ensure the security of the obtained data without storing the encryption algorithm.

Claims20

Dependent claims

A method implemented by one or more processors of a client, the method comprising:

sending a first information header used for requesting to obtain a key to a server, wherein the key is restored by the server from the first information header according a first encryption algorithm;
and
receiving a second information header and the key from the server, and the second information header is obtained by the server after encrypting the key based on a second encryption algorithm.

Dependencies are inferred from the claim text.

Facts

Application

16/570,392Filed 13 Sep 2019

Priority

CN 201710153405.215 Mar 2017

Published

2 Jan 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 9/0822
Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely…: using…
H04L 9/00
Cryptographic mechanisms or cryptographic arrangements for secret or secure communications
H04L 9/002
Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols: countermeasures against…
H04L 9/08
Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols: key distribution or…

Key Encryption Methods, Apparatuses, and Systems

Life of this patent

Key Encryption Methods, Apparatuses, and Systems

Life of this patent

Abstract

Claims20