US 2016/0112413 A1Published application

Method for controlling security of cloud storage

AssigneeTianjin Surdoc Corp.

InventorDonglin WANG

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Abstract

A method for controlling security of cloud storage is developed to solve the problem in the prior art that the private key has a low security since the provider of the cloud storage service needs to control the private key in the case of sharing storage. The method comprises: encrypting a private key assigned to a user with two different encryption modes to obtain a first key and a second key and storing the first key and the second key; receiving an answer to a security question inputted by the user when decrypting the first key with a user password fails, and decrypting the second key with the answer to the security question to obtain the private key; and resetting the user password, encrypting the private key obtained by decryption with the answer to the security question to obtain a new first key.

Claims9

Dependent claims

A method for controlling security of cloud storage, comprising:

encrypting a private key assigned to a user with two different encryption modes to obtain a first key which is used to obtain the private key through being decrypted with a user password as an decryption key and a second key which is used to obtain the private key through being decrypted with an answer to a security question as the decryption key, and storing the first key and the second key;
receiving the answer to the security question inputted by the user when decrypting the first key with the user password fails, and decrypting the second key with the answer to the security question to obtain the private key;
and
resetting the user password, encrypting the private key obtained by decryption with the answer to the security question to obtain a new first key which is used to obtain the private key through being decrypted with the new user password as the decryption key.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/943,909Filed 17 Nov 2015
Priority: CN 201210132926.72 May 2012
Published: 21 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 63/0846
Using passwords: using time-dependent-passwords, e.g. periodically changing passwords
G06F 16/137
File access structures, e.g. distributed indices: hash-based
G06F 21/78
Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer: to…
H04L 63/061
For supporting key management in a packet data network: for key exchange, e.g. in peer-to-peer networks

Family

Application13/271,165Continuation in part · filed 11 Oct 2011
Application61/621,553Us provisional application · filed 8 Apr 2012
Application13/858,489Continuation in part · filed 8 Apr 2013
Application14/943,909Continuation
Application13/858,489Continuation
US 2012/0096342 A1Published application
US 2014/0181116 A1Published application
US 9,176,953 B2Related patent
US 2016/0112413 A1This patent

From the US filing history. Foreign family members aren’t listed.