CN105553979A - Encryption publishing method for privacy information in smart power grid - Google Patents

Abstract

The invention provides a method for encrypting and releasing private information in a smart grid. In the method, a user registers in a social network and verifies the user information; performs key management on the user information; establishes a two-level privacy information lexicon; operates the friend list and publishes information. The method proposed by the present invention can automatically remind the user to protect personal privacy information, can effectively ensure the personal safety of the user, and increase the number of visitors to the social networking site; the user's private information is encrypted, and the public key is related to the user's identity information, which is easy Obtaining, compared with other public key cryptosystems, saves the trouble of generating keys, managing keys, and verifying the consistency between public keys and users by a trusted third party; s expenses.

Description

A method for encrypting and releasing private information in smart grid

technical field

The invention relates to the fields of network security and anonymous communication, in particular to a method for encrypting and releasing private information in a smart grid.

Background technique

In the 21st century, global smart grid construction is developing rapidly, and grid data is rapidly expanding. With the convenience and speed of the network, users can communicate and disseminate information such as text, pictures, sounds, and videos more quickly. Especially with the popularization of various smart terminal devices, users spend more and more time online. The content of information is becoming more and more abundant, and various social networks and forums in the smart grid are integrating with the real world.

At present, under the environment where my country's smart grid construction work is gradually advancing and developing, the important guarantee basis for the safe and stable operation of the smart grid is information security. Especially after entering the era of big data, the problems of big data security and privacy protection in the smart grid are increasingly highlight. If we cannot effectively solve the existing security problems and prevent potential security risks, it will inevitably affect the intelligentization process of my country's power grid.

The essence of social networks and forums is an open system composed of human relationship networks and information flowing on this relationship network. Relationship and information constitute the two most important attributes in a social network. Relationship maintenance, information openness, and security are two key factors to ensure social network security.

Contents of the invention

In view of this, the present invention provides a method for encrypting and publishing private information in a smart grid, which realizes automatic reminders to users to protect personal privacy information, can effectively ensure the personal safety of users, and increase the number of visitors to social networking sites; The private information is encrypted, and the public key is related to the user's identity information and is easy to obtain. Compared with other public key cryptosystems, it saves the need for a trusted third party to generate keys, manage keys, authenticate public keys, and users. The trouble of consistency; at the same time, it saves the overhead caused by the encryption algorithm of the public key cryptosystem.

The purpose of the present invention is achieved through the following technical solutions:

A method for encrypting and releasing private information in a smart grid, said method comprising the steps of:

Step 1. The user registers with the social network and verifies its user information;

Step 2. Carry out key management to the user information;

Step 3. Establish two-level privacy information lexicon;

Step 4. Operate the friend list;

Step 5. Publish information.

Preferably, said step 1 includes:

1-1. Users register their user information on social networks;

1-2. According to the application field and security level of the social network, determine whether the information is real-name information or non-real-name information;

1-3. According to the security level of whether the information is real-name information or non-real-name information, verify the information by text message or email.

Preferably, said step 2 includes:

Perform one-to-one release key management on the user information, join friend group release key management, or publicly release key management to everyone.

Preferably, the one-to-one publishing key management includes:

a. The information sender user encrypts the private information with the public key of the information receiver user; wherein, the public key of the information receiver user is the information receiver user ID;

b. The information sender user publishes the encrypted private information;

c. The information receiver user decrypts the private information with a personal private key.

Preferably, the publishing key management for joining a friend group includes:

d. Publish a pair of public key and private key for each friend group; wherein, the public key is the group number, and the private key is generated by the server and secretly sent to each group user;

e. The user applies to join the friend group;

f. The user receives the invitation to join the group information and the public key; wherein, the public key is the group number;

g. judging whether the user agrees to join the friend group;

If so, the server generates a private key for secret transmission, and enters step h;

If not, go to step 3;

h. The user becomes the group user; the group user encrypts private information with a public key, and decrypts information with a private key.

Preferably, the public key management for everyone includes:

Random keys are used to encrypt private information, and all users have permission to view it.

Preferably, said step 3 includes:

The establishment of a two-level privacy dictionary includes the establishment of a first-level privacy dictionary and a second-level privacy dictionary;

The first-level privacy lexicon includes server-recommended words; the server-recommended words are keywords including private information recommended by the server;

The secondary privacy lexicon includes user improvement information; the user improvement information includes text information, pictures, audio and video information added, deleted or modified by the user.

Preferably, said step 4 includes:

The user adds his friend users to a friend list, deletes users he no longer trusts, or establishes a friend group.

Preferably, the establishment of a friend group includes:

i. Determine whether the user has established a friend group;

If yes, apply for a group number and go to step j;

If not, go to step 5;

j. Set the group number as a public key, and the server sends a private key;

k. Invite friends to join the group;

l. Encrypt the private information with the public key and go to step 5.

Preferably, said step 5 includes:

According to the privacy information lexicon, the part of the information to be released that involves privacy is encrypted, and the part that does not involve non-privacy is published in plain text.

It can be seen from the above technical solution that the present invention provides a method for encrypting and releasing private information in a smart grid. In this method, a user registers in a social network and verifies its user information; performs key management on user information; establishes a two-level Privacy information lexicon; operate friend list and publish information. The method proposed by the invention can automatically remind the user to protect personal privacy information, can effectively ensure the personal safety of the user, and increase the number of visitors to the social networking site; the user's private information is encrypted, and the public key is related to the user's identity information, which is easy Obtaining, compared with other public key cryptosystems, saves the trouble of generating keys, managing keys, and verifying the consistency between public keys and users by a trusted third party; s expenses.

Compared with the closest prior art, the technical solution provided by the present invention has the following excellent effects:

1. In the technical solution provided by the present invention, by establishing a two-level privacy information lexicon, users are automatically reminded to protect personal privacy information, effectively ensuring the personal safety of users, and increasing the number of visitors to social networking sites.

2. The technical solution provided by the present invention applies the public key cryptosystem based on identity information to the social network to encrypt the user's private information, and the public key is related to the user's identity information and is easy to obtain. Compared with other In the public key cryptosystem, the trouble of generating keys, managing keys, and verifying the consistency between public keys and users is saved by a trusted third party.

3. In the technical solution provided by the present invention, in order to save the overhead caused by the encryption algorithm of the public key cryptography system, this patent adds the function of maintaining the friend list. For friends with a high degree of trust, the user can choose not to encrypt. On the contrary, for Low trust, or strangers, users can choose to encrypt important private information.

4. The technical solution provided by the present invention is widely used and has significant social and economic benefits.

Description of drawings

Fig. 1 is a flow chart of a method for encrypting and releasing private information in a smart grid according to the present invention;

Fig. 2 is a schematic flow chart of step 1 in the encrypted release method of the present invention;

Fig. 3 is a schematic diagram of encryption of a privacy protection system for publishing information in a smart grid according to the present invention;

Fig. 4 is a new user's process of obtaining a key for the first time and a flow chart of publishing information of the present invention;

Fig. 5 is a flow chart of the process of obtaining a key for the first time by a new user entering the group and releasing information in the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

As shown in Figure 1, the present invention provides a method for encrypting and releasing private information in a smart grid, comprising the following steps:

Step 1. The user registers with the social network and verifies its user information;

Step 2. Perform key management on user information;

Step 3. Establish two-level privacy information lexicon;

Step 4. Operate the friend list;

Step 5. Publish information.

As shown in Figure 2, step 1 includes:

1-1. Users register their user information on social networks;

1-2. Determine whether the information is real-name information or non-real-name information according to the application field and security level of the social network;

1-3. According to the security level of real-name information or non-real-name information, verify the information by SMS or email.

Wherein, performing key management on user information includes: performing one-to-one publishing key management on user information, joining friend groups to publishing key management, or publicly publishing key management to everyone.

Among them, one-to-one release key management includes:

a. The user of the information sender encrypts the private information with the public key of the user of the information receiver; wherein, the public key of the user of the information receiver is the ID of the user of the information receiver;

b. The user of the information sender publishes encrypted private information;

c. The information receiver user decrypts the private information with a personal private key.

Among them, joining the friend group release key management includes:

d. Publish a pair of public key and private key for each friend group; wherein, the public key is the group number, and the private key is generated by the server and secretly sent to each group user;

e. The user applies to join the friend group;

f. The user receives the invitation to join the group information and the public key; where the public key is the group number;

g. Determine whether the user agrees to join the friend group;

If yes, the server generates a private key for secret transmission, and enters step h;

If not, go to step 3;

h. Users become group users; group users encrypt private information with public keys and decrypt information with private keys.

Among them, publicly releasing key management to everyone includes:

Random keys are used to encrypt private information, and all users have permission to view it.

Among them, the two-level privacy lexicon includes a first-level privacy lexicon and a second-level privacy lexicon;

The first-level privacy dictionary includes server-recommended words; server-recommended words are keywords that contain private information recommended by the server;

The secondary privacy lexicon includes user-completed information; user-completed information includes text information, pictures, audio and video information added, deleted or modified by the user.

Wherein, operating the buddy list includes: the user adds his buddy user to the buddy list, deletes a user he no longer trusts, or establishes a buddy group.

Among them, establishing a friend group includes:

i. Determine whether the user has established a friend group;

If yes, apply for a group number and go to step j;

If not, go to step 5;

j. Set the group number as the public key, and the server sends the private key;

k. Invite friends to join the group;

l. Encrypt the private information with the public key and go to step 5.

Among them, the release information includes:

According to the privacy information lexicon, the part of the information to be released that involves privacy is encrypted, and the part that does not involve non-privacy is published in plain text.

The present invention provides a specific application example of a method for encrypting and releasing private information in a smart grid, specifically as follows:

Considering both relationship and information, a privacy protection system for publishing information in smart grid is proposed. The system mainly includes the following steps, as shown in Figure 3:

Specific steps:

(1) Register user information. According to the application field and security level of the social network, user registration information can be divided into two types: real name and non-real name, and whether SMS or email verification is required is determined according to security requirements.

(2) Key management. Since the present invention encrypts private information using a public key cryptosystem based on identity information, it involves a key management link. Considering that social network release information is divided into the following situations: one-to-one distribution, release to friend groups, and public release to everyone, the following discusses one by one:

ⅰ) One-to-one distribution: the sending user uses the receiving user's public key, ie, the user ID, to encrypt and publish private information, and the receiving user uses the personal private key to decrypt the information.

ii) Publish to friend groups: issue a pair of public key and private key for each group, the public key is the group number, the private key is generated by the background server and secretly sent to each group user, each All users have the public key and private key of the group at the same time, use the public key to encrypt private information, and use the private key to decrypt information. Figure 4 and Figure 5 show the process of first-time key acquisition and information release for new users and new group users.

ⅲ) Public release to everyone: Use a random key to encrypt private information, which can be viewed by any user, but the private information cannot be decrypted and can only be obtained in ciphertext.

(3) Establish a two-level privacy information lexicon. The purpose of establishing the privacy information lexicon is to protect the user's personal privacy information from being inadvertently disclosed to the greatest extent. The method of setting two-level privacy dictionaries, the first-level privacy dictionaries are based on server recommendations, and the second-level privacy dictionaries are completed by users adding, deleting, and modifying. The server recommendation can be based on some common private information, such as common names, "Wang Yong", "Zhang Hong"; "Born in"; "Work unit"; "Home address"; Brand power equipment" and other keywords that may appear in private information. The server only recommends some common keywords, and more needs to be improved by the user. In addition to text information, some sensitive pictures, audio, video and other multimedia information can also be added to the secondary privacy dictionary by the user.

(4) Maintain the friend list. Users can add familiar friend users or delete users they no longer trust. They can also create groups, invite friends to join the group, and post group information.

(5) Information release. Once the private information lexicon is established, the private information involved in the information can be encrypted according to different recipients by the method in the above step (2), and other non-private information can be published in plain text.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still modify or equivalently replace the specific embodiments of the present invention. , and any modifications or equivalent replacements that do not deviate from the spirit and scope of the present invention are all within the protection scope of the claims of the pending application of the present invention.

Claims (10)

1. the encryption dissemination method of privacy information in intelligent grid, it is characterized in that, described method comprises the steps:

Step 1. user registers at social networks and verifies its user profile;

Step 2. carries out key management to described user profile;

Step 3. sets up two-stage privacy information dictionary;

Step 4. operates buddy list;

Step 5. releases news.

2. the method for claim 1, is characterized in that, described step 1 comprises:

1-1. user registers its user profile at social networks;

1-2., according to the application of described social networks and level of security, judges that described information is real name information or non-real name information;

1-3. is the safe class of real name information or non-real name information according to described information, carries out note or mailbox checking to described information.

3. the method for claim 1, is characterized in that, described step 2 comprises:

Key management is issued one to one to described user profile, adds friend group issue key management or key management is published to everyone.

4. method as claimed in claim 3, is characterized in that, the described key management of issue one to one comprises:

A. information sender user is by the public key encryption privacy information of receiving party user; Wherein, the public-key cryptography of described receiving party user is described receiving party's user ID;

B. described information sender user issues the described privacy information after encryption;

C. described receiving party user deciphers described privacy information with the secret key of individual private possession.

5. method as claimed in claim 3, is characterized in that, described in add friend group and issue key management and comprise:

D. a pair public-key cryptography and private cipher key is issued for each friend group; Wherein, described public-key cryptography is group number, and private cipher key is generated by server and secret is sent to each crowd of users;

E. user's application adds friend group;

F. user receives and invites into group information and public key; Wherein, described public key is group number;

G. judge whether described user adheres to friend group;

If so, then generate the privately owned secret key of secret transmission by described server, enter step h;

If not, step 3 is entered;

H. described user becomes described group user; Described group user uses public key encryption privacy information, uses private cipher key decryption information.

6. method as claimed in claim 3, is characterized in that, describedly publishes key management to everyone and comprises:

Adopting random key encryption privacy information, all checking with having permission per family.

7. the method for claim 1, is characterized in that, described step 3 comprises:

Set up two-stage privacy dictionary to comprise and set up one-level privacy dictionary and set up secondary privacy dictionary;

Described one-level privacy dictionary comprises server and recommends word; Described server recommends word to be the keyword comprising privacy information that server is recommended;

Described secondary privacy dictionary comprises user's perfect information; Described user's perfect information comprises text message, picture, audio frequency and the video information that user adds, deletes or revises.

8. the method for claim 1, is characterized in that, described step 4 comprises:

Its good friend user is added into buddy list, deletes the user that loses faith in or set up friend group by described user.

9. method as claimed in claim 8, it is characterized in that, described friend group of setting up comprises:

I. judge whether user sets up friend group;

If so, then apply for group number, enter step j;

If not, then step 5 is entered;

J. described group number is set to public key, server sends privately owned secret key;

K. good friend is invited to enter group;

L. with described public key encryption privacy information, step 5 is entered.

10. the method for claim 1, is characterized in that, described step 5 comprises:

According to described privacy information dictionary, relate to the Partial encryption of privacy in the information that will issue, do not relate to the part of non-privacy and adopt mode expressly to issue.