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Method for retrieving lost key based on symmetric encryption, and related devices

A technology of symmetric encryption and symmetric secret key, which is applied in the field of symmetric encryption-based lost secret key retrieval method and related equipment, and can solve the problems of secret key loss, irretrievable, lost secret key, etc.

Inactive Publication Date: 2019-04-12
ONE CONNECT SMART TECH CO LTD SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, it is necessary for the user to have the problem that the secret key cannot be retrieved after the user loses it, and a method and related equipment based on symmetric encryption for recovering the lost secret key are provided.

Method used

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  • Method for retrieving lost key based on symmetric encryption, and related devices
  • Method for retrieving lost key based on symmetric encryption, and related devices
  • Method for retrieving lost key based on symmetric encryption, and related devices

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof.

[0041] figure 1 It is a flowchart of a method for retrieving a lost secret k...

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PUM

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Abstract

The invention relates to the technical field of encryption, and in particular to a method for retrieving a lost key based on symmetric encryption, and related devices. The method comprises the following steps: obtaining data and a password, generating a random number, generating a symmetric encrypted key by the password and the random number, and storing the key; encrypting the data by using the key, generating a ciphertext, and transmitting the ciphertext and the random number to the server; obtaining a key retrieval request, initiating the key retrieval request to the server, and obtaining the random number returned by the server; obtaining the password again, regenerating a key by the password and the random number returned by the server, and storing the key to complete the retrieve ofthe key. The method uses the information input by the user as a password, and then generates a key with the random number returned by the random number generator. The method also saves the random number on the server side, obtains a mode of the random number by the key retrieval request, and generates a key again to implement the key retrieval function.

Description

technical field [0001] The invention relates to the field of encryption technology, in particular to a method for retrieving a lost secret key based on symmetric encryption and related equipment. Background technique [0002] Secret key, that is, key. In cryptography, a key refers to a secret information used to complete cryptographic applications such as encryption, decryption, and integrity verification. The development of cryptography has advanced computer science, especially techniques used in computer and network security, such as access control and confidentiality of information. [0003] The symmetric encryption algorithm in the secret key is an earlier encryption algorithm. In the symmetric encryption algorithm, the data sender processes the plaintext (original data) and the encryption key together with a special encryption algorithm, turning it into complex encrypted ciphertext and sending it out. After the recipient receives the ciphertext, if he wants to interpr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/0819H04L9/0869H04L9/0894H04L63/0435
Inventor 张文明王瑞雪谢丹力宦鹏飞
Owner ONE CONNECT SMART TECH CO LTD SHENZHEN