CN109918430A - A kind of 5G user data goes associated storage system and access method - Google Patents
A kind of 5G user data goes associated storage system and access method Download PDFInfo
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Abstract
The present invention provides a kind of 5G user data and goes associated storage system and access method, which includes: index control unit and multiple sub- UDR nodes；Control unit is indexed, for classifying to user data, determines index, the incidence relation being encrypted between the index of Various types of data and save each encrypted indexes value for Various types of data；And when receiving data access request, judge that data access service provides unit to the access authority of user data；Multiple sub- UDR nodes, for storing Various types of data；And when receiving data access request, corresponding data is returned to according to the index of data to be visited.In data storage, which is stored separately encrypted indexes value and data content to index control unit and sub- UDR node by classifying to user data；In reading data, access authority is judged using index control unit, reading data is carried out according to access authority.The present invention can effectively reduce information leakage risk caused by user information correlation stores.
Description
Technical field
The present invention relates to mobile radio communication technical field of safety protection more particularly to a kind of 5G user data to go associated storage
System and access method.
Background technique
Due to the appearance of 5G new scene and new business, compared to the home subscriber server (Home in 4G network
Subscriber Server, HSS), the uniform data storage unit (Unified Data Repository, UDR) in 5G will
Store more user data informations.Under most of situations, all data of single user are all deposited in mobile network customer data base
It is stored in a list item, for example, the identity of user, position, subscription data etc..There is chain for the concentration associated storage of user data
The risk of leakage, malice invader can obtain other privacy informations of user using known portions information, may make user face
Face and is tracked the threat such as positioning.
Existing database point library divide table handling main purpose be disperse single device load and improve system it is whole
One big database is cut into multiple small subdata bases using the rule of horizontal cutting or vertical cutting by body availability,
It solves write performance bottleneck problem and promotes the scalability of entire data-base cluster.But table handling is divided in a current point library
There is no the personal secrets for considering database purchase content emphatically, do not fully consider the incidence relation between each data and thus may be used
Chain disclosure risk caused by energy.
Summary of the invention
It concentrates associated storage in UDR for existing 5G user data, may be obtained by attacker according to existing information association
Or unauthorized access causes the problem of chain leakage, the present invention provides a kind of 5G user data and goes to associated storage system and access side
Method, the different expression form of different types of data and homogeneous data carry out in logic with going to be associated with to split and deposit physically
Storage, by physically uncoupling separation, weak rigidity parsing, go associated storage in the way of, eliminate user information correlation storage draw
The information leakage hidden danger risen.
In a first aspect, the present invention, which provides a kind of 5G user data, goes associated storage system, comprising: index control unit and more
A sub- UDR node；Wherein:
The index control unit, for classifying to user data, the Various types of data to obtain determines index, to each
The index of class data is encrypted and saves the incidence relation between each encrypted indexes value；And it is mentioned receiving data access service
When the data access request sent for unit, judge that the data access service provides unit to the access authority of user data；
Multiple sub- UDR nodes, for store classify to user data after obtained Various types of data；And it is connecing
When receiving the data access request that data access service offer unit is sent, corresponding number is returned to according to the index of data to be visited
According to.
Further, the index control unit is located at the rear end of data access service offer unit.
Second aspect, the present invention, which provides, a kind of goes associated storage based on what above-mentioned 5G user data went associated storage system
Method, this method comprises:
Step 1.1, index control unit classify to user data, and obtained Various types of data is stored to each sub- UDR
Node；
Step 1.2, index control unit are that Various types of data determines index according to the nodal information of each sub- UDR node, respectively
The index of Various types of data is encrypted, and saves the incidence relation between each encrypted indexes value.
The third aspect, the present invention provide a kind of reading data side that associated storage system is gone based on above-mentioned 5G user data
Method, this method comprises:
Step 2.1, receive data access service provide unit send data access request when, index control unit
Judge that the data access service provides unit to the access authority of user data；
Step 2.2, if it is determined that the data access service, which provides unit, treats access level data with access authority, rope
Draw the index that control unit searches categorical data to be visited, the sub- UDR node is according to the index of the categorical data to be visited
Return to corresponding data；
Step 2.3, if it is determined that the data access service provide unit treat other classifications other than access level data
Data have access authority, the encryption rope of index control unit other categorical datas and the categorical data to be visited according to
Draw the index that the incidence relation between value determines categorical data to be visited, the sub- UDR node is according to the categorical data to be visited
Index return corresponding data；
Step 2.4, if it is determined that the data access service provide unit all categories data are had no right to access, then abandon
The data access request.
Further, the index control unit in the step 2.3 according to other described categorical datas with it is described to be visited
Incidence relation between the encrypted indexes value of categorical data determines the index of categorical data to be visited specifically: index control unit is looked into
The index with other categorical datas described in access authority is looked for, the index of other categorical datas is encrypted, according to
Incidence relation between the encrypted indexes value of other categorical datas and each encrypted indexes value determines the data category to be visited
Encrypted indexes value, the encrypted indexes value of the data category to be visited is decrypted to obtain the data category to be visited
Index, the sub- UDR node return to corresponding data according to index.
Beneficial effects of the present invention:
A kind of 5G user data provided by the invention goes associated storage system and access method, which passes through setting
Control unit and multiple sub- UDR nodes are indexed, index control unit classifies user data according to pre-set classification method,
Then different classes of user data is stored to each sub- UDR node；Then index control unit determines index, encrypts all kinds of numbers
According to index and save the incidence relation between each encrypted indexes value of same user.When being connected to access request, control unit is indexed
The access authority of the DAP of judgement access user data, the data category requested access to for it have direct access authority, according to
User data is directly searched and returned to index, has dereference permission, according to its encrypted indexes and incidence relation search request
The encrypted indexes value of data category is accessed, then decrypts and is indexed and searched, return to user data.Pass through above-mentioned setting, index
Control unit just knows that the incidence relation of same user's Various types of data encrypted indexes value does not know specific user data, each son but
UDR node also just knows that certain a kind of user data content and its index, can not be associated with and deduce other kinds of user data, from
And effectively reduce information leakage risk caused by user information correlation stores.
Detailed description of the invention
Fig. 1 is the 3GPP 5G user data storage architecture schematic diagram that the prior art provides；
Fig. 2 is one of the structural schematic diagram that a kind of 5G user data provided in an embodiment of the present invention goes associated storage system；
Fig. 3 is the second structural representation that a kind of 5G user data provided in an embodiment of the present invention goes associated storage system；
Fig. 4 is a kind of schematic diagram of 5G user data storage method provided in an embodiment of the present invention；
Fig. 5 is a kind of flow diagram of 5G user data read method provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, technical solution in the embodiment of the present invention are explicitly described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Fig. 1 is the 3GPP 5G user data storage architecture schematic diagram that the prior art provides.Fig. 2 and Fig. 3 is respectively the present invention
The 5G user data that embodiment provides removes two kinds of structural schematic diagrams of associated storage system.Fig. 2 and Fig. 3 the difference is that,
The Internal back end of data access service bill of lading member can be set in index control unit.As shown in Figures 2 and 3, the storage system packet
It includes: index control unit 101 and N number of sub- UDR node 102；Wherein:
The index control unit 101, for classifying to user data, the Various types of data to obtain determines index,
Incidence relation being encrypted between the index of Various types of data and save each encrypted indexes value；And receiving data access clothes
When business provides the data access request that unit is sent, judge that the data access service provides unit to the access right of user data
Limit；
Multiple sub- UDR nodes 102, for store classify to user data after obtained Various types of data；And
When receiving the data access request that data access service offer unit is sent, is returned and corresponded to according to the index of data to be visited
Data.
Specifically, index control unit is located at data access service offer unit (Data Access Provider, DAP)
Rear end, for user data to be classified according to pre-set classification method and is that different classes of data determine in database
Index, encrypt the index of Various types of data and save the incidence relation between each encrypted indexes value of same user；The index control
Unit processed be also used to judge access user data DAP access authority, judge the DAP whether the use of a certain classification of Internet access
User data.
The sub- UDR node is used to store the user data of each classification, and in the request for receiving DAP according to index
Search and return corresponding user data, each sub- UDR node is physically mutually isolated, only with DAP interaction data.
It indexes control unit and each sub- UDR node cooperates, realize the logical division of user data and going physically
Associated storage, and guarantee that the user of different rights grade can not access the data category beyond its extent of competence, eliminate attacker
Association analysis, chain a possibility that stealing privacy of user data.
The 5G user data of the embodiment of the present invention goes associated storage system, first by index control unit to same user
Data classified, establish Various types of data index and encrypt Various types of data index, then will be between encrypted indexes value
Incidence relation is stored to index control unit, and the particular content of Various types of data is stored to each sub- UDR node.In this way, index
Control unit just knows that the incidence relation of same user's Various types of data encrypted indexes value does not know specific user data, each son but
UDR node just knows that certain a kind of user data content and its index, even if such attacker steals from index control unit
Information can not also learn the particular content of user data；Even if further believing from the part that certain sub- UDR node obtains user
Breath, can not also be associated with and deduce other kinds of user data, to effectively reduce letter caused by user information correlation storage
Cease disclosure risk.
On the basis of the above embodiments, 5G user data provided in an embodiment of the present invention goes the storage of associated storage system
Method the following steps are included:
S101, index control unit classify to user data, and obtained Various types of data is stored to each sub- UDR and is saved
Point；
Specifically, the principle of classification that index control unit classifies to user data specifically: by function opposite independent
And the data that user privacy information leakage is easily caused after associated storage are separated.As an embodiment, by function
The data that the relatively independent and degree of association is greater than preset threshold are divided into different classes of.
S102, index control unit are that Various types of data determines index according to the nodal information of each sub- UDR node, respectively to each
The index of class data is encrypted, and saves the incidence relation between each encrypted indexes value.
Fig. 4 is that a kind of 5G user data provided in an embodiment of the present invention goes to be associated with the schematic diagram for depositing storage method.In conjunction with figure
4,5G user data is divided into 3 (i.e. N=3) classes by the embodiment of the present invention.
Identification information (MDN/SUPI), the location information (5G- of mobile subscriber are stored in 5G customer data base UDR
GUTI number, cell ID), status information (booting, shutdown), membership information and signing information (including security parameter, calling and
Roaming authority, signing service) etc. mobile subscribers' whole registration information, in addition also have embody business scenario slice mark
Information such as (NSSAI, NSI ID).
Since the SUPI of user is not announced externally as implicit communication identifier, by the location information of user, business information (label
About information) etc. data be stored together with SUPI, the leakage of important information will not be caused.The MDN number of user is as when opening an account
External disclosure information can be stored together with other disclosed, relevant information of called service processing.
Meanwhile the new user data in conjunction with caused by 5G network new opplication scene, according to different type user identifier
5G user data can be divided into three classes by correlation degree:
(1) user is called service related data
It is index with MDN, while includes user information relevant to process of user calling, the encryption rope that encryption MDN is obtained
Drawing value is INDEX1.
(2) user's calling service related data
It is index with SUPI, SUPI number is as mobile subscriber identification code, the distribution when mobile subscriber opens an account, not to granddad
Cloth, the effect in mobile radio communication are identity, and major function is the certification, charging and shifting for completing network to user
Mobility management etc..Authentication information comprising user, status information, location information and roaming signing letter relevant to charging simultaneously
Breath etc..The encrypted indexes value that encryption SUPI is obtained is INDEX2.
(3) 5G service related data
Being sliced mark NSI ID with network is index, while including business relevant to slice and accounting-related information, and
There is certain scalability according to different user demands and business scenario, the encrypted indexes value that encryption NSI ID is obtained is
INDEX3。
According to above-mentioned classification method and storage method, after single piece of information loss, invader is because can not be by target user's
MDN is associated with SUPI, the true identity information without can determine that user, can not be carried out by user MDN or SUPI to user
Other operations such as positioning, the mode of this separation storage effectively eliminate the pass between open user identifier and private user identity
Join, eliminate the direct correlation disclosed between user identifier and user data, can guarantee the safety of user information.
It, can be according to reading flow shown in fig. 5 when receiving the data access request of data access service offer unit
The reading of Cheng Jinhang user data, details are not described herein again.
5G UDR will meet the service request of carrier class, very strict to communication delay requirement, and above-mentioned mode classification was both protected
Demonstrate,proved 5G user data in logic go relevance, meet demand for security, also fully considered communication efficiency problem, ensure that
The mutual independence of business improves communication efficiency by reducing the interactive operation across sub- UDR node, ensure that the available of business
Property.
Fig. 5 is the flow diagram of 5G user data read method provided in an embodiment of the present invention.As shown in figure 5, the party
Method the following steps are included:
S201, receive data access service provide unit send data access request when, index control unit sentence
The data access service of breaking provides unit to the access authority of user data；
For example, user data is divided into N class according to the data classification method of setting in advance by index control unit.DAP is to depositing
Storage system UDR initiates data read request, and the data read is requested to belong to jth class (1≤j≤N)；Control unit is indexed to this
DAP execute access arbitration, judge the DAP whether Internet access jth class user data.
S202, if it is determined that the data access service, which provides unit, treats access level data with access authority, index
Control unit searches the index of categorical data to be visited, and the sub- UDR node is returned according to the index of the categorical data to be visited
Return corresponding data；Otherwise then follow the steps S203；
For example, it is direct that data access service provides unit if it is determined that the DAP has the access authority of jth class user data
It reads and returns to corresponding user data in j-th of sub- UDR；
S203, if it is determined that the data access service provide unit treat other categorical datas other than access level data
With access authority, control unit is indexed according to the encrypted indexes value of described other categorical datas and the categorical data to be visited
Between incidence relation determine the index of categorical data to be visited, the sub- UDR node is according to the rope of the categorical data to be visited
Draw return corresponding data；Otherwise then follow the steps S204；
Specifically, the encrypted indexes of index control unit other categorical datas and the categorical data to be visited according to
Incidence relation between value determines the index of categorical data to be visited specifically: index control unit searches the institute with access authority
The index for stating other categorical datas encrypts the index of other categorical datas, according to other categorical datas
Incidence relation between encrypted indexes value and each encrypted indexes value determines the encrypted indexes value of the data category to be visited, to described
The encrypted indexes value of data category to be visited is decrypted to obtain the index of the data category to be visited, the sub- UDR node
Corresponding data is returned according to index.
For example, if it is determined that the i-th class of DAP Internet access (1≤i≤N, the and i ≠ j) user data, index control unit add
The index of close i-th class user data obtains encrypted indexes value INDEX i；
Control unit is indexed according to the incidence relation of preservation, obtains the encrypted indexes value INDEX j of jth class user data,
It decrypts to obtain the index of jth class user data again；
According to the index of jth class user data, data access service provides unit and reads and return to phase in j-th of sub- UDR
The user data answered.
S204, if it is determined that the data access service provide unit all categories data are had no right to access, then abandon institute
State data access request.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (5)
1. a kind of 5G user data goes associated storage system characterized by comprising index control unit and multiple sub- UDR sections
Point；Wherein:
The index control unit, for classifying to user data, the Various types of data to obtain determines index, to all kinds of numbers
According to index encrypted and save the incidence relation between each encrypted indexes value；And list is provided receiving data access service
When the data access request that member is sent, judge that the data access service provides unit to the access authority of user data；
Multiple sub- UDR nodes, for store classify to user data after obtained Various types of data；And it is receiving
When data access service provides the data access request that unit is sent, corresponding data is returned to according to the index of data to be visited.
2. storage system according to claim 1, which is characterized in that the index control unit is located at the data access
The rear end of service rendering units.
3. a kind of go associated storage method based on what any 5G user data of claim 1-2 went associated storage system,
It is characterised by comprising:
Step 1.1, index control unit classify to user data, and obtained Various types of data is stored to each sub- UDR node；
Step 1.2, index control unit are that Various types of data determines index according to the nodal information of each sub- UDR node, respectively to each
The index of class data is encrypted, and saves the incidence relation between each encrypted indexes value.
4. a kind of method for reading data that associated storage system is gone based on any 5G user data of claim 1-2,
It is characterized in that, comprising:
Step 2.1, receive data access service provide unit send data access request when, index control unit judgement
The data access service provides unit to the access authority of user data；
Step 2.2, if it is determined that the data access service, which provides unit, treats access level data with access authority, index control
Unit processed searches the index of categorical data to be visited, and the sub- UDR node is returned according to the index of the categorical data to be visited
Corresponding data；
Step 2.3, if it is determined that the data access service provide unit treat other categorical datas other than access level data
With access authority, control unit is indexed according to the encrypted indexes value of described other categorical datas and the categorical data to be visited
Between incidence relation determine the index of categorical data to be visited, the sub- UDR node is according to the rope of the categorical data to be visited
Draw return corresponding data；
Step 2.4, if it is determined that the data access service provide unit all categories data are had no right to access, then abandon described in
Data access request.
5. method for reading data according to claim 4, which is characterized in that the index control unit in the step 2.3
Class to be visited is determined according to the incidence relation between other described categorical datas and the encrypted indexes value of the categorical data to be visited
The index of other data specifically:
It indexes control unit and searches the index with other categorical datas of access authority, to other categorical datas
Index is encrypted, and determines institute according to the incidence relation between the encrypted indexes value of other categorical datas and each encrypted indexes value
The encrypted indexes value for stating data category to be visited is decrypted to obtain described to the encrypted indexes value of the data category to be visited
The index of data category to be visited, the sub- UDR node return to corresponding data according to index.
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| CN109918430B (en) | 2022-09-23 |
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