CN107196966B - Identity authentication method and system based on block chain multi-party trust - Google Patents
Identity authentication method and system based on block chain multi-party trust Download PDFInfo
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- CN107196966B CN107196966B CN201710542619.9A CN201710542619A CN107196966B CN 107196966 B CN107196966 B CN 107196966B CN 201710542619 A CN201710542619 A CN 201710542619A CN 107196966 B CN107196966 B CN 107196966B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/083—Network architectures or network communication protocols for network security for authentication of entities using passwords
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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
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0863—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving passwords or one-time passwords
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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
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
Abstract
The invention discloses a multi-party trusted identity authentication method and system based on a block chain, belonging to the field of internet identity authentication, and aiming at solving the technical problems of how to realize identity authentication of a user facing a plurality of application systems based on the block chain, safely storing user information through the block chain in the identity authentication process and truly and completely verifying the identity of the user; the method comprises the steps that an application system generates user attribute card information according to a received registration request, encrypts the user attribute card information and then distributes the encrypted user attribute card information to a block chain, wherein the application system comprises a plurality of parties, and the encrypted user attribute card information corresponding to each party of application system is stored in the block chain; each party application verifies the user identity by means of the blockchain. The structure of the system comprises a block chain network, a client authentication module configured at a client and an application server authentication module configured and applied to the system. The invention realizes the safe and reliable storage of the real-name information of the user in the block chain and the real and complete user identity authentication through the block chain.
Description
Technical Field
The invention relates to the field of internet identity authentication, in particular to a multiparty trusted identity authentication method and system based on a block chain.
Background
In the PKI system, a digital certificate of a third party CA is a way to indicate real-name information of a user. The digital Certificate is a string of numbers which mark identity information of communication parties in Internet communication, and provides a way of verifying the identity of a communication entity on the Internet, and the digital Certificate is a file which is digitally signed by a Certificate Authority (CA for short) and contains public key owner information and a public key. People can identify the identity of each other on the network by using digital certificates. CA authentication is a centralized authentication mode, and all application systems and users need to trust the CA unconditionally, so that the authentication efficiency is low and the authentication cost is high.
The block chain is a decentralized distributed database, and is a series of data blocks which are associated by using a cryptographic method, and each data block contains information of one network transaction, and is used for verifying the validity (anti-counterfeiting) of the information and generating a next block. Blockchains have the characteristics of decentralization, information non-tampering and the like, and once information is verified and added to the blockchain, the information is stored permanently.
How to realize the identity authentication of a user facing a plurality of application systems through the blockchain, and how to safely store user information and truly and completely verify the identity of the user through the blockchain in the identity authentication process are technical problems to be solved.
Disclosure of Invention
The technical task of the invention is to provide a multi-party trusted identity authentication method and system based on a block chain, aiming at overcoming the defects, and solving the problems of how to realize identity authentication of a user facing a plurality of application systems based on the block chain, safely storing user information through the block chain in the identity authentication process and truly and completely verifying the identity of the user.
The technical task of the invention is realized by the following modes:
the identity authentication method based on multi-party trust of the block chain comprises the steps that after an application system generates user attribute card information according to a received registration request, the user attribute card information is encrypted and the encrypted user attribute card information is issued to the block chain, the application system shares multiple parties, and the encrypted user attribute card information corresponding to each party of application system is stored in the block chain; and each application system verifies the user identity by means of the block chain after receiving the authentication request, and performs multi-party trusted identity verification through multi-party encrypted user attribute card information stored in the block chain.
Further, the identity authentication method based on block chain multi-party trust of each application system comprises the following steps:
s1, user registration: when a user registers for the first time, a public key and a private key are generated, when an application system receives a registration request initiated by the user, real-name authentication is carried out on the user, user attribute card information is generated, and the user attribute card information encrypted through the public key is issued to a block chain;
s2, identity authentication: and after the application system receives the authentication request initiated by the user, the private key is verified, and after the verification is successful, the application system verifies the information of the plurality of decrypted user attribute cards submitted by the user by means of the block chain.
Furthermore, the user in the multi-party application system firstly registers the application system as a first application system, and the application systems except the first application system in the multi-party application system are residual application systems; the identity authentication method of the multi-party trust based on the block chain of each party application system comprises the following steps:
s1, user registration: the method comprises the steps that a public key and a private key are generated when a user registers for the first time in a first application system, the public key is registered when the user registers for the first time in the rest application systems, and the private key can be used for the rest application systems;
when receiving a registration request initiated by a user, an application system performs real-name authentication on the user and generates user attribute card information, and publishes the user attribute card information encrypted by a public key to a block chain;
s2, identity authentication: and after the application system receives the authentication request initiated by the user, the private key is verified, and after the verification is successful, the application system verifies the information of the plurality of decrypted user attribute cards submitted by the user by means of the block chain.
Further, in step S1, when the application system receives a registration request initiated by the user, the method performs real-name authentication on the user and generates user attribute card information, which includes the following steps:
s111, submitting real-name information, a public key, a private key and signature information of the real-name information, the public key and the private key to an application system by a user;
s112, the application system performs real-name authentication on the user through the authoritative identity authentication source;
s113, the application system calculates the real-name information, the public key and the signature of the application system on the real-name information and the public key to generate user attribute card information, wherein the user attribute card information comprises: the signature of the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification, the attribute card issuing authority public key and the attribute card issuing authority to the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification and the attribute card issuing authority public key.
Further, in step S1, the method for issuing the user attribute card information encrypted by the public key to the blockchain by the application system includes the following steps:
s121, calculating the abstract of the user attribute card information by the application system;
s122, the application system uses the public key to encrypt the user attribute card information;
and S123, the application system issues the encrypted ciphertext of the user attribute card information and the abstract of the plaintext of the user attribute card information to the block chain.
Further, in step S2, the application system verifies the private key after receiving the authentication request initiated by the user, including the following steps:
s211, the user sends an authentication request to the application system, and the application system returns an authentication challenge to the user;
s212, the user signs the authentication challenge by using a private key;
s213, the application system uses the public key to verify the authentication challenge signature, and if the verification is successful, the user is indicated to have the private key.
Further, in step S2, the method for verifying the plurality of decrypted user attribute card information submitted by the user by the application system via the blockchain includes the following steps:
s221, the user decrypts the information of each user attribute card and submits the information of the plurality of decrypted attribute cards to an application system;
s222, the application system calculates the hash of the user attribute card information, and inquires and compares hash values through a block chain;
and S223, the application system analyzes the real-name information and verifies the signature of the attribute card issuing mechanism.
Further, the carrier of the private key includes, but is not limited to, a U shield, a mobile phone shield, a password card and an encryption machine.
Further, authoritative sources of identity include, but are not limited to, police, telecommunications, and banks; the real name information includes, but is not limited to, a user name, a user identification card, and a user phone number.
The identity authentication system based on the block chain multi-party trust comprises a block chain network, a client authentication module configured on a client and an application server authentication module configured with an application system, wherein the client authentication module is used for generating a private key and a public key, executing digital signature and executing private key decryption, the application server authentication module is used for generating user attribute card information, executing signature verification and executing storage, query and comparison of a user attribute card information block chain, and the block chain storage authentication network is used for executing storage of the user attribute card information.
The identity authentication method and the identity authentication system based on the block chain multi-party trust have the following advantages that:
1. the identity of the user is identified by using the user attribute card information, and the plurality of user attribute card information corresponding to the multi-party application system are all issued to the block chain, so that the authenticity and integrity of the user attribute card information are ensured, the identity of the user is witnessed through the plurality of user attribute card information, and is more credible compared with the identity of the user witnessed through the single user attribute card information, and when the user attribute card information of the user is more and more, the identity of the user is clearer and more definite;
2. the invention takes the public cryptographic technology as the means of identity authentication, thus having high security;
3. the invention encrypts the user attribute card information through the public key, thereby ensuring that the privacy of the user attribute card information cannot be revealed.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a flow chart of the identity authentication method based on block chain multi-party trust in embodiment 1;
fig. 2 is a block diagram illustrating a user registration process in the identity authentication method based on block chaining for multi-party trust in embodiment 1;
fig. 3 is a block diagram of a process of authenticating a user by an application system in the identity authentication method based on block chain multi-party trust in embodiment 1.
Detailed Description
The identity authentication method and system based on block chain multi-party trust of the invention are described in detail below with reference to the drawings and specific embodiments of the specification.
Example 1:
as shown in fig. 1, fig. 2, and fig. 3, in the identity authentication method based on block chain multi-party trust of the present invention, after an application system generates user attribute card information according to a received registration request, the application system encrypts the user attribute card information and distributes the encrypted user attribute card information to a block chain, the application system has multiple parties, and the encrypted user attribute card information corresponding to each party of the application system is stored in the block chain; and each application system verifies the user identity by means of the block chain after receiving the authentication request, and performs multi-party trusted identity verification through multi-party encrypted user attribute card information stored in the block chain. The identity authentication method based on block chain multi-party trust of each application system comprises the following steps: :
(1) and user registration:
(1.1) generating a public key and a private key when a user registers for the first time, and initiating a registration request to an application system;
(1.2) submitting real-name information, a public key, a private key and signature information of the real-name information, the public key and the private key to an application system by a user;
(1.3) the application system carries out real-name authentication on the user through an authoritative identity authentication source;
(1.4) the application system calculates the real name information, the public key and the signature of the application system on the real name information and the public key to generate user attribute card information, wherein the user attribute card information comprises: the signature of the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification, the attribute card issuing authority public key and the attribute card issuing authority on the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification and the attribute card issuing authority public key;
(1.5) the application system calculates the abstract of the user attribute card information;
(1.6) the application system uses the public key to encrypt the user attribute card information;
(1.7) the application system issues the encrypted ciphertext of the user attribute card information and the abstract of the plaintext of the user attribute card information to a block chain, so that the fact that data in the user attribute card information are real, complete and cannot be tampered is guaranteed, and meanwhile, the privacy of a user is protected through encryption;
(2) and identity authentication:
(2.1) the user initiates an authentication request to the application system, the application system returns an authentication challenge to the user, and the authentication challenge is a random number;
(2.2) the user signs the authentication challenge using the private key;
(2.3) the application system uses a public key to verify the authentication challenge signature, and if the verification is successful, the user is indicated to have the private key;
(2.4) in the step (2.3), after the verification is successful, the user decrypts each user attribute card information and submits a plurality of decrypted user attribute card information to the application system;
(2.5) the application system calculates the hash of the user attribute card information, and inquires and compares the hash value through a block chain;
and (2.6) the application system analyzes the real-name information and verifies the signature of the attribute card issuing organization.
The carriers of the private key include but are not limited to a U shield, a mobile phone shield, a password card and an encryption machine; the authoritative identity authentication source comprises but is not limited to public security, telecommunication and banks, and the real-name authentication is carried out on the user through the authoritative identity authentication source so as to realize the credible identity authentication of multiple parties; the real name information includes, but is not limited to, a user name, a user identification card, and a user phone number.
In the invention, a public key and a private key are generated when a user registers for the first time, each application system carries out real-name authentication on the user through an authoritative certification authority and generates corresponding user attribute card information, and the user attribute card information is encrypted through the public key and then stored in a block chain, so that the user has the private key, and the real-name information and the public key of the user are safely stored in the block chain after being certified by a multi-party certification authority; when an application system needs a user to complete identity authentication account login, the application system verifies a private key of the user, meanwhile, the application system verifies the authenticity and integrity of a plurality of user attribute card information held by the user through a block chain, analyzes the real-name information of the user, and verifies the signature of an attribute card information issuing organization, so that real-name authentication of the user is realized. The information of the plurality of user attribute cards is equivalent to the identity of a user witnessed by multiple parties, when the information of the user attribute cards is more and more, the identity of the user is clearer and clearer, and the identity witnessed by multiple parties is more credible than the identity witnessed by a single party.
Example 2:
this embodiment is a further improvement on embodiment 1, and the difference between this embodiment and embodiment 1 is: the user in the multi-party application system firstly registers the application system as a first application system, and the application systems except the first application system in the multi-party application system are residual application systems; in the process of executing user registration and identity authentication in all the application systems, all the application systems share one private key without regeneration.
Specifically, when the user registration procedure is executed, the step (1.1) has the following differences from the embodiment 1:
and (1.1) generating a public key and a private key when the user registers for the first time in the first application system, registering the public key when the user registers for the first time in the rest application systems, using the private key by the rest application systems, and initiating a registration request to the application systems.
The other process steps in this example are identical to those in example 1.
Example 3:
the identity authentication system based on the block chain multi-party trust comprises a block chain storage network, a client authentication module configured on a client and an application server authentication module configured on each application system, wherein the client authentication module is used for generating a private key and a public key, executing digital signature and executing private key decryption, the application server authentication module is used for generating user attribute card information, executing signature verification and executing storage, query and comparison of a user attribute card information block chain, and the block chain storage network is used for executing storage of the user attribute card information.
The client authentication module is used for generating a private key and a public key and generating the public key and the private key of a user when the user registers for the first time; the client authentication module is used for executing digital signature, and performing digital signature on the public key, the private key and the real-name information before the user submits the public key, the private key and the real-name information to the application system; the client authentication module is used for executing private key decryption, signing a challenge authentication signature returned for the application system by using the private key, wherein the challenge authentication is a random number, and when a user initiates an authentication request to the application system, the application system returns the challenge authentication to the user for verifying the private key of the user.
The application server authentication module generates user attribute card information, and after the application system verifies the real-name information submitted by the user through the authoritative identity authentication source, the application server authentication module calculates the real-name information, the public key and the signature of the application system on the real-name information and the public key to generate the user attribute card information, wherein the user attribute card information comprises: the signature of the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification, the attribute card issuing authority public key and the attribute card issuing authority on the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification and the attribute card issuing authority public key;
the application server authentication module performs signature verification.
The application server authentication module executes the storage of the user attribute card information block chain, and can realize the following functions in the user registration process: calculating the abstract of the user attribute card information, encrypting the user attribute card information by using a public key, and sending the abstract of the user attribute card information and the ciphertext of the user attribute card information to a block chain; the application server authentication module executes the query and comparison of the user attribute card information block chain, and can realize the following functions in the identity authentication process: calculating hash of the user attribute card information according to the decrypted user attribute card information submitted by a plurality of users, inquiring and comparing hash values through a block chain, analyzing real-name information, and verifying the signature of an attribute card issuing organization.
The block link evidence storage network comprises a plurality of block link nodes, and user attribute card information is stored in the block link nodes.
The identity authentication system based on block chain multi-party trust can be used for realizing the identity authentication method based on block chain multi-party trust in the embodiment 1.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions. In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Claims (4)
1. The identity authentication method based on multi-party trust of the block chain is characterized in that after an application system generates user attribute card information according to a received registration request, the user attribute card information is encrypted and the encrypted user attribute card information is issued to the block chain, the application system has a plurality of parties, and the encrypted user attribute card information corresponding to each party of application system is stored in the block chain;
after receiving the authentication request, each application system verifies the user identity by means of the block chain, and performs identity verification of multi-party trust through multi-party encrypted user attribute card information stored in the block chain;
the multi-party application system is characterized in that the application system which is registered by a user firstly is a first application system, and the application systems except the first application system in the multi-party application system are residual application systems; the identity authentication method of the multi-party trust based on the block chain of each party application system comprises the following steps:
s1, user registration: the method comprises the steps that a public key and a private key are generated when a user registers for the first time in a first application system, the public key is registered when the user registers for the first time in the rest application systems, and the private key can be used for the rest application systems;
when receiving a registration request initiated by a user, an application system performs real-name authentication on the user and generates user attribute card information, and publishes the user attribute card information encrypted by a public key to a block chain;
s2, identity authentication: the application system verifies the private key after receiving an authentication request initiated by a user, and verifies a plurality of decrypted user attribute card information submitted by the user by means of a block chain after the private key is successfully verified;
in step S1, when the application system receives a registration request initiated by a user, the application system performs real-name authentication on the user and generates user attribute card information, including the following steps:
s111, submitting real-name information, a public key, a private key and signature information of the real-name information, the public key and the private key to an application system by a user;
s112, the application system performs real-name authentication on the user through the authoritative identity authentication source;
s113, the application system calculates the real-name information, the public key and the signature of the application system on the real-name information and the public key to generate user attribute card information, wherein the user attribute card information comprises: the signature of the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification, the attribute card issuing authority public key and the attribute card issuing authority on the user ID, the real-name information, the real-name authentication source, the public key, the attribute card issuing authority identification and the attribute card issuing authority public key;
in step S1, the application system issues the user attribute card information encrypted by the public key to the blockchain, including the following steps:
s121, calculating the abstract of the user attribute card information by the application system;
s122, the application system uses the public key to encrypt the user attribute card information;
s123, the application system issues the encrypted ciphertext of the user attribute card information and the abstract of the plaintext of the user attribute card information to a block chain;
in step S2, the application system verifies the private key after receiving the authentication request initiated by the user, including the following steps:
s211, the user sends an authentication request to the application system, and the application system returns an authentication challenge to the user;
s212, the user signs the authentication challenge by using a private key;
s213, the application system uses a public key to verify the authentication challenge signature, and if the verification is successful, the user is indicated to have the private key;
in step S2, the method for verifying the decrypted user attribute card information submitted by the user by the application system via the blockchain includes the following steps:
s221, the user decrypts the information of each user attribute card and submits the information of the plurality of decrypted attribute cards to an application system;
s222, the application system calculates the hash of the user attribute card information, and inquires and compares hash values through a block chain;
and S223, the application system analyzes the real-name information and verifies the signature of the attribute card issuing mechanism.
2. The identity authentication method based on block chain multi-party trust of claim 1, wherein the carrier of the private key includes but is not limited to a U shield, a mobile phone shield, a password card and an encryption machine.
3. The blockchain-based multi-party trusted identity authentication method of claim 1, wherein authoritative identity authentication sources include but are not limited to police, telecommunications, and banks; the real name information includes, but is not limited to, a user name, a user identification card, and a user phone number.
4. The identity authentication system based on the block chain multi-party trust is characterized in that the identity authentication system is used for realizing the identity authentication method based on the block chain multi-party trust of any one of claims 1 to 3, and comprises a block chain network, a client authentication module configured at a client and an application server authentication module configured with an application system, wherein the client authentication module is used for generating a private key and a public key, executing a digital signature and executing decryption of the private key, the application server authentication module is used for generating user attribute card information, executing signature verification and executing storage, query and comparison of a user attribute card information block chain, and the block chain storage network is used for executing storage of the user attribute card information;
the application server authentication module executes the storage of the user attribute card information block chain, and can realize the following functions in the user registration process: calculating the abstract of the user attribute card information, encrypting the user attribute card information by using a public key, and sending the abstract of the user attribute card information and the ciphertext of the user attribute card information to a block chain; the application server authentication module executes the query and comparison of the user attribute card information block chain, and can realize the following functions in the identity authentication process: calculating hash of the user attribute card information according to the decrypted user attribute card information submitted by a plurality of users, inquiring and comparing hash values through a block chain, analyzing real-name information, and verifying the signature of an attribute card issuing organization.
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| CN106611372B (en) * | 2016-12-27 | 2021-01-08 | 深圳微众信用科技股份有限公司 | Credit investigation data query method and system |
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