CN111163466B - Method for 5G user terminal to access block chain, user terminal equipment and medium - Google Patents
Method for 5G user terminal to access block chain, user terminal equipment and medium Download PDFInfo
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- CN111163466B CN111163466B CN201911402184.3A CN201911402184A CN111163466B CN 111163466 B CN111163466 B CN 111163466B CN 201911402184 A CN201911402184 A CN 201911402184A CN 111163466 B CN111163466 B CN 111163466B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
- H04W12/041—Key generation or derivation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
- H04W12/043—Key management, e.g. using generic bootstrapping architecture [GBA] using a trusted network node as an anchor
- H04W12/0431—Key distribution or pre-distribution; Key agreement
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
Abstract
The embodiment of the invention provides a method for accessing a 5G user terminal to a block chain, user terminal equipment and a medium, wherein the method comprises the steps of detecting the signal intensity of each operator network, and performing identity registration on a temporary identity registration server in the block chain through a UPF (unified power flow) in the operator network with the maximum signal intensity; after identity registration is successful, sending a block link access request to the UPF, so that the UPF returns information of the trust node; thereby establishing a connection between the 5G user terminal device and the trusted node. In the embodiment of the invention, the 5G user terminal equipment without the SIM card can only establish connection with the trust node but can not establish connection with other nodes, so that resources of other nodes except the trust node can not be accessed and obtained, and the safety of the 5G user terminal equipment access block chain without the SIM card is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of block chains, in particular to a method for accessing a 5G user terminal to a block chain, user terminal equipment and a medium.
Background
When 5G user terminal equipment (hereinafter referred to as 5G UE) accesses a 5G network without an SIM card, a block chain is required to be accessed, and a trust root is constructed through the block chain to solve the safety problem. But how are SIM card-less 5G UEs to access the blockchain without having obtained 5G registration authentication? In the prior art, generally, a mode of passing all traffic of the SIM card-free 5G UE is used to enable the SIM card-free 5G UE to establish connection with any node in the block chain, but this also causes a malicious user to establish connection with any node in the block chain, which reduces security of accessing the block chain by the SIM card-free 5G UE.
Disclosure of Invention
The embodiment of the invention provides a method for accessing a 5G user terminal into a block chain, user terminal equipment and a medium, which are used for improving the safety of the 5G user terminal equipment without an SIM card into the block chain.
A first aspect of an embodiment of the present invention provides a method for accessing a 5G user terminal to a block chain, where the method includes:
5G user terminal equipment detects the signal intensity of each operator network and performs identity registration on a temporary identity registration server in a block chain through a user plane network element function unit UPF in the operator network with the maximum signal intensity;
after the identity registration is successful, the 5G user terminal equipment sends a block link access request to the UPF;
the 5G user terminal equipment receives information of a trust node returned by the UPF according to the block chain access request, wherein the trust node is an adjacent node of the 5G user terminal equipment on the Internet and is also positioned in the block chain;
and the 5G user terminal equipment establishes connection with the trust node.
In a possible implementation manner, the blockchain entry request includes information of a blockchain node which the 5G user terminal device requests to access.
In one possible embodiment, the trusted node is a node trusted by the UPF.
In one possible embodiment, the trusted node is a node trusted by the temporary identity registration server.
The identity registration is performed on a temporary identity registration server in a block chain through a user plane network element function Unit (UPF) in the operator network with the maximum signal intensity, and the method comprises the following steps:
and generating a first public key and a first private key corresponding to the temporary identity, and performing identity registration on the temporary identity registration server based on the first public key and the first private key.
A second aspect of an embodiment of the present invention provides a 5G user terminal device, including: a processor and a memory, the memory having instructions stored therein that when executed by the processor perform the following:
detecting the signal intensity of each operator network, and performing identity registration on a temporary identity registration server in a block chain through a user plane network element function unit UPF in the operator network with the maximum signal intensity;
after the identity registration is successful, sending a block link access request to the UPF;
receiving information of a trust node returned by the UPF according to the block chain access request, wherein the trust node is an adjacent node of the 5G user terminal equipment on the Internet and is also positioned in the block chain;
establishing a connection with the trusted node.
In a possible implementation manner, the blockchain entry request includes information of a blockchain node which the 5G user terminal device requests to access.
In one possible implementation, the trusted node is a node trusted by the UPF.
In one possible embodiment, the trusted node is a node trusted by the temporary identity registration server.
A third aspect of embodiments of the present invention provides a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method of the first aspect.
In the embodiment of the invention, 5G user terminal equipment performs identity registration on a temporary identity registration server in a block chain by detecting the signal intensity of each operator network and by a user plane network element function unit UPF in the operator network with the maximum signal intensity; after the identity registration is successful, sending a block chain access request to the UPF, so that the UPF returns information of a trust node, wherein the trust node is an adjacent node of the 5G user terminal equipment on the Internet and is also positioned in the block chain; thereby establishing a connection with the trusted node. In the embodiment of the invention, the 5G user terminal equipment without the SIM card can only establish connection with the trust node but can not establish connection with other nodes, so that the resources of other nodes except the trust node can not be accessed and obtained, and the safety of the 5G user terminal equipment without the SIM card accessing the block chain is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a method for accessing a block chain by a 5G user equipment according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application;
fig. 3 is a flowchart of a method for accessing a block chain by a 5G user equipment according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a 5G user terminal device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention are intended to cover a non-exclusive inclusion, e.g., a process or device that comprises a list of steps is not necessarily limited to those structures or steps explicitly listed but may include other steps or structures not expressly listed or inherent to such process or device.
Fig. 1 is a flowchart of a method for accessing a block chain by a 5G user terminal according to an embodiment of the present application, where as shown in fig. 1, the method includes:
The 5G user terminal device referred to in this embodiment may be exemplarily understood as a 5G device without a SIM card, such as a 5G handset without a SIM card, but is not limited to a 5G handset.
The blockchain referred to in this embodiment is a blockchain maintained by multiple operators, a temporary identity registration server of each operator accesses the blockchain and records and maintains the latest public key of all the operators in the blockchain, a 5G UE or other terminal devices may be accessed into the blockchain as a node of the blockchain, and the blockchain may be used to record registration information of each node in the blockchain and transaction information between each node.
For example, fig. 2 is a schematic structural diagram of a communication system provided in an embodiment of the present application, where in the system shown in fig. 2, the device UE may be understood as a 5G user terminal device referred to in this embodiment, and a 5G Core network (5G Core network, 5gc) of an operator sends a public key of the operator to a block chain for billing. The temporary identity registration server and the User Plane Function (UPF) of an operator access to the block chain, the temporary identity registration server records and maintains the public key of each operator, the 5G UE can have the capability of accessing the internet, and the adjacent nodes of the 5G UE in the internet access to the block chain at the same time. In the registration process, the 5G UE first generates a public key and a private key corresponding to a temporary identity (for convenience of distinguishing the first public key and the first private key), prompts a user to input an encrypted password to encrypt and store the first private key locally, then sends a registration application carrying the first public key and a target operator (operator with the strongest signal strength) identifier to an Access and Mobility Management Function (AMF) or Session Management Function (SMF) in the 5GC through the 5G base station gNB, notifies the UPF to transfer the registration application to the temporary identity registration server through the AMF or the SMF, and after receiving the registration application, the temporary identity registration server searches for the public key of the target operator in a block chain account book according to the identifier of the target operator, signing the searched public key of the target operator, the block number of a block comprising the public key and the information of an adjacent node of the 5G UE on the Internet by using a private key of the temporary identity registration server, returning a first feedback message obtained by the signing to the 5G UE, acquiring the block content corresponding to the block number by the 5G UE from the adjacent node on the Internet, verifying the public key returned by the temporary identity registration server by using the public key of the target operator carried in the block content, encrypting a second public key corresponding to a permanent identity of the temporary identity registration server based on the public key and a first public key corresponding to a temporary identity of the temporary identity registration server after the verification is passed, signing the encrypted first encrypted data by using a first private key corresponding to the temporary identity, sending the signed signature data to the temporary identity registration server, and verifying the digital signature in the signature data by using the first public key after the temporary identity registration server receives the signature data, and after the verification is passed, decrypting the encrypted data by adopting the first public key and the public key of the temporary identity registration server to obtain a second public key, and registering the 5G UE by using the second public key.
And 102, after the identity registration is successful, the 5G user terminal equipment sends a block link access request to the UPF.
In one embodiment, the blockchain access request includes identification information of the 5G UE and does not include information of the blockchain node to which the 5G UE requests access.
In another embodiment, the block link entry request may further include, in addition to the identification information of the 5G UE, information (e.g., block link identification, IP address, etc.) of a block link node that the 5G UE requests to access. The block link point requested to be accessed by the 5G UE may be exemplarily understood as a node recorded by the 5G UE and adjacent to the node on the internet and/or the block chain, but is not limited to these nodes.
And 103, the 5G user terminal equipment receives information of a trust node returned by the UPF according to the block link access request, wherein the trust node is an adjacent node of the 5G user terminal equipment on the Internet and is also positioned in the block chain.
In this embodiment, when the blockchain access request sent by the 5G UE does not include the information of the blockchain node requesting access, the UPF directly feeds back the trusted node information to the 5G UE. When a block link access request sent by the 5G UE comprises information (such as a block link identifier, an IP address and the like) of a block link node requesting access, the UPF refuses to forward the block link access request to a corresponding node, actively establishes a neighbor relation with the 5G UE, takes a block link point which is approved by the UPF and is adjacent to the 5G UE on the Internet as a trust node, and feeds back the information (such as the block link identifier, the IP address and the like) of the trust node to the 5G UE, wherein the adjacent node is a node which has unit data transmission time with the 5G UE smaller than a preset threshold value. That is, the chunk link entry request includes chunk link nodes that may or may not be a UPF-trusted node.
And step 104, the 5G user terminal equipment establishes connection with the trust node.
And after receiving the information of the trust node fed back by the UPF, the 5G UE updates the own adjacent node list and establishes connection with the trust node according to the updated adjacent node list. So that a 5G UE will only be able to establish a connection with a trusted node due to the limitations of the UPF. This ensures that all neighboring nodes connected to the 5G UE are UPF trusted nodes, thereby avoiding the 5G UE from maliciously using the resources of the 5G network.
In this embodiment, the 5G user terminal device performs identity registration on the temporary identity registration server in the blockchain by detecting the signal strength of each operator network and by using the user plane network element function unit UPF in the operator network with the largest signal strength; after identity registration is successful, sending a block chain access request to the UPF to enable the UPF to return information of a trust node, wherein the trust node is an adjacent node of 5G user terminal equipment on the Internet and is located in a block chain; thereby establishing a connection with the trusted node. In the embodiment of the invention, the 5G user terminal equipment without the SIM card can only establish connection with the trust node but can not establish connection with other nodes, so that the resources of other nodes except the trust node can not be accessed and obtained, and the safety of the 5G user terminal equipment without the SIM card accessing the block chain is improved.
Fig. 3 is a flowchart of a method for accessing a block chain by a 5G user terminal according to an embodiment of the present application, and as shown in fig. 3, on the basis of the foregoing embodiment, the method includes:
In this embodiment, the 5G UE first generates a public key and a private key corresponding to a temporary identity (for convenience of distinguishing the first public key and the first private key), prompts a user to input an encrypted password to encrypt and store the first private key locally, then sends a registration application carrying the first public key and a target operator (operator with the strongest signal strength) identifier to the access and AMF or SMF in the 5GC through the 5G base station gNB, the AMF or SMF notifies the UPF to transfer the registration application to the temporary identity registration server, after receiving the registration application, searches for the public key of the target operator in a block chain account according to the identifier of the target operator, and uses its private key to obtain the public key of the target operator, the block number of the block including the public key and information of an adjacent node of the 5G UE on the internet, and returns a first feedback message obtained by signing to the 5G UE, and uses the first private key to obtain a block content corresponding to the temporary identity data obtained by the temporary identity registration server, and uses a second public key to decrypt the first public key and a second public key obtained by the temporary identity signature, and sends a second public key obtained by the temporary identity signature data obtained by the temporary identity signature server, and registering the 5G UE through the second public key.
And step 303, the 5G user terminal device receives information of a trust node returned by the temporary identity registration server according to the blockchain access request, where the trust node is an adjacent node of the 5G user terminal device on the internet and is also located in the blockchain.
In this embodiment, the trusted node is a block link point recognized by the temporary identity registration server itself and adjacent to the 5G UE on the internet.
When a block link access request sent by 5G user terminal equipment includes information of block link nodes requesting access, the temporary identity registration server firstly determines whether the block link points are contained in a trust node list according to the trust node list stored in the temporary identity registration server, if not, determines the block link points adjacent to the 5G user terminal equipment on the Internet from the trust node list, and sends the determined node information to the 5G user terminal equipment.
And step 304, the 5G user terminal equipment establishes connection with the trust node.
In the embodiment, the interaction is carried out with the 5G user terminal equipment through the temporary identity registration server, so that the redesign of the UPF is avoided, and the cost is saved.
In this embodiment, the 5G user terminal device performs identity registration on the temporary identity registration server in the blockchain by detecting the signal strength of each operator network and by using the user plane network element function unit UPF in the operator network with the largest signal strength; after identity registration is successful, sending a block chain access request to the UPF to enable the UPF to return information of a trust node, wherein the trust node is an adjacent node of 5G user terminal equipment on the Internet and is located in a block chain; thereby establishing a connection with the trusted node. In the embodiment of the invention, the 5G user terminal equipment without the SIM card can only establish connection with the trust node but can not establish connection with other nodes, so that the resources of other nodes except the trust node can not be accessed and obtained, and the safety of the 5G user terminal equipment without the SIM card accessing the block chain is improved.
Fig. 4 is a schematic structural diagram of a 5G user terminal device according to an embodiment of the present application, and as shown in fig. 4, a device 40 includes a processor 41 and a memory 42, where the memory 42 stores instructions, and when the processor 41 executes the instructions, the following operations are performed:
detecting the signal intensity of each operator network, and performing identity registration on a temporary identity registration server in a block chain through a user plane network element function unit UPF in the operator network with the maximum signal intensity;
after the identity registration is successful, sending a block link access request to the UPF;
receiving information of a trust node returned by the UPF according to the block chain access request, wherein the trust node is an adjacent node of the 5G user terminal equipment on the Internet and is also positioned in the block chain;
establishing a connection with the trusted node.
In a possible implementation manner, the blockchain entry request includes information of a blockchain node which the 5G user terminal device requests to access.
In one possible embodiment, the trusted node is a node trusted by the UPF.
In one possible embodiment, the trusted node is a node trusted by the temporary identity registration server.
The device provided by this embodiment can execute the method of any of the above embodiments, and the execution manner and effect are similar, which are not described herein again.
Embodiments of the present invention also provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method provided in any of the above embodiments.
Finally, it should be understood by those skilled in the art that all or part of the processes in the methods of the embodiments described above may be implemented by hardware related to instructions of a computer program, where the computer program may be stored in a computer-readable storage medium, and when executed, the computer program may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like.
Each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for accessing a block chain by a 5G user terminal is characterized by comprising the following steps:
5G user terminal equipment detects the signal intensity of each operator network and performs identity registration on a temporary identity registration server in a block chain through a user plane network element function unit UPF in the operator network with the maximum signal intensity;
after the identity registration is successful, the 5G user terminal equipment sends a block link access request to the UPF;
the 5G user terminal equipment receives information of a trust node returned by the UPF according to the block chain access request, wherein the trust node is an adjacent node of the 5G user terminal equipment on the Internet and is also positioned in the block chain;
the 5G user terminal equipment establishes connection with the trust node;
the identity registration is performed on a temporary identity registration server in a block chain through a user plane network element function Unit (UPF) in the operator network with the maximum signal intensity, and the method comprises the following steps:
generating a first public key and a first private key corresponding to a temporary identity, and performing identity registration on the temporary identity registration server based on the first public key and the first private key;
performing identity registration on the temporary identity registration server based on the first public key and the first private key, including:
the 5G user terminal device sends a registration application carrying the first public key and the operator identifier with the maximum signal strength to an access and mobility management function unit or a session management function unit in a 5G core network through a 5G base station, the mobility management function unit or the session management function unit informs the UPF to transfer the registration application to the temporary identity registration server, the temporary identity registration server searches the public key of the operator with the maximum signal strength in a block chain account book according to the operator identifier with the maximum signal strength after receiving the registration application, signs the public key of the operator with the maximum signal strength, the block number of the block comprising the public key and the information of the adjacent nodes of the 5G user terminal device on the Internet by adopting a private key of the temporary identity registration server, and returns a first feedback message obtained by signing to the 5G user terminal device;
the 5G user terminal equipment obtains the block content corresponding to the block number from an adjacent node of the 5G user terminal equipment on the Internet, verifies the public key returned by the temporary identity registration server through the public key of the operator with the highest signal strength carried in the block content, encrypts a second public key based on the public key and the first public key after the verification is passed, signs the encrypted first encrypted data through the first private key, sends the signed signature data to the temporary identity registration server, verifies the digital signature in the signature data through the first public key after the temporary identity registration server receives the signature data, decrypts the encrypted data through the first public key and the public key of the temporary identity registration server after the verification is passed to obtain a second public key, and registers the 5G user terminal equipment through the second public key.
2. The method according to claim 1, wherein the blockchain access request includes information of the blockchain node that the 5G user terminal device requests to access.
3. The method according to claim 1 or 2, wherein the trusted node is a node trusted by the UPF.
4. The method according to claim 1 or 2, wherein the trusted node is a node trusted by the temporary identity registration server.
5. A 5G user terminal device comprising a processor and a memory, the memory having stored therein instructions that when executed by the processor perform the following:
detecting the signal intensity of each operator network, and performing identity registration on a temporary identity registration server in a block chain through a user plane network element function unit UPF in the operator network with the maximum signal intensity;
after the identity registration is successful, sending a block link access request to the UPF;
receiving information of a trust node returned by the UPF according to the block chain access request, wherein the trust node is an adjacent node of the 5G user terminal equipment on the Internet and is also positioned in the block chain;
establishing a connection with the trusted node;
the identity registration is carried out on a temporary identity registration server in a block chain through a user plane network element function unit UPF in the operator network with the maximum signal strength, and the method comprises the following steps:
generating a first public key and a first private key corresponding to a temporary identity, and performing identity registration on the temporary identity registration server based on the first public key and the first private key;
performing identity registration on the temporary identity registration server based on the first public key and the first private key, including:
the 5G user terminal equipment sends a registration application carrying the first public key and the operator identifier with the maximum signal strength to an access and mobility management function unit or a session management function unit in a 5G core network through a 5G base station, the mobility management function unit or the session management function unit informs the UPF to transfer the registration application to the temporary identity registration server, the temporary identity registration server searches the public key of the operator with the maximum signal strength in a block chain account book according to the operator identifier with the maximum signal strength after receiving the registration application, signs the searched public key of the operator with the maximum signal strength, the block number of the block comprising the public key and the information of the adjacent node of the 5G user terminal equipment on the Internet by adopting a private key of the temporary identity registration server, and returns a first feedback message obtained by signing to the 5G user terminal equipment;
the 5G user terminal equipment obtains the block content corresponding to the block number from an adjacent node of the 5G user terminal equipment on the Internet, verifies the public key returned by the temporary identity registration server through the public key of the operator with the highest signal strength carried in the block content, encrypts a second public key based on the public key and the first public key after the verification is passed, signs the encrypted first encrypted data through the first private key, sends the signed signature data to the temporary identity registration server, verifies the digital signature in the signature data through the first public key after the temporary identity registration server receives the signature data, decrypts the encrypted data through the first public key and the public key of the temporary identity registration server after the verification is passed to obtain a second public key, and registers the 5G user terminal equipment through the second public key.
6. The device according to claim 5, wherein the blockchain access request includes information of a blockchain node that the 5G user terminal device requests to access.
7. The apparatus according to claim 5 or 6, wherein the trusted node is a node trusted by the UPF.
8. The apparatus of claim 7, wherein the trusted node is a node trusted by the temporary identity registration server.
9. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-4.
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