CN112733127B - Bidirectional authentication method and system based on blockchain - Google Patents
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Abstract
The invention provides a bidirectional authentication method and a system based on a blockchain, comprising the following steps: the chip end sends a uplink request to the server end; the server verifies the received uplink certificate of the SE chip, the verification passes, and the public key of the server encrypts the ID uploaded by the chip; the server side issues a random number according to the encrypted ID and encrypts the random number through a chain account public key; the chip end sends a chain account private key to sign the random number, and the signed random number is uploaded to the server end; the server side performs signature verification through a chain account public key, and issues a chain address, a chain-up certificate and a response certificate after the signature verification passes; and the chip end writes the received corresponding data into the SE chip to finish the data uplink. According to the bidirectional authentication system and method based on the block chain, related data interaction is carried out through the server side, the chip side and the block chain, and bidirectional security authentication of data before uplink is realized; and the data authentication is ensured to be safe and reliable by encrypting the random number.
Description
Technical Field
The invention relates to the field of blockchains, in particular to a bidirectional authentication method and system based on blockchains.
Background
Blockchain is a distributed ledger technique, transactions within the ledger are guaranteed to be tamper-proof according to cryptographic signatures and hash algorithms, and all transactions are traceable in the ledger. In public blockchains, both the user's account information and transaction content are public, protecting user privacy only by "pseudo-anonymity". However, in the case of data as an asset, on the one hand, the user does not want all the data resources to be opened to the public network environment, and on the other hand, the server does not want the data to be infinitely used by other users after one authorization, so that it is necessary to use encryption technology to protect the data privacy, and at the same time, the authorized server needs to be ensured to be able to view the data so as to ensure the normal use of big data applications. This requires a flexible access control policy to enable control of the access rights of different users.
With the deep development of the blockchain technology, the application field of the blockchain is more and more widespread, but once the data on the chain is uploaded, the data cannot be changed, and if the authenticity of the data before being uploaded can not be verified, the chain is filled with a pile of false data, so that the value is not high.
At present, a method for protecting user privacy in a big data environment through identity authentication and data encryption exists, specifically, interaction between a user and a server is protected through bidirectional identity authentication through a blockchain technology. The method is suitable for forming identity recognition in a data interaction link between a user and a service provider and is favorable for storing data on a public blockchain network, a terminal user and the server can perform bidirectional authentication, corresponding identification is generated through user registration, after the server receives relevant information, a check code CV is generated, the generated information is formed into a specific ID and packaged on the blockchain network, but in actual application, whether the check codes CV generated in two times are identical or not is compared, and whether the data needing to be uploaded is modified or not cannot be accurately judged due to the information contained in the check code CV.
Disclosure of Invention
The embodiment of the invention provides a bidirectional authentication method and a bidirectional authentication system based on a block chain, which are used for solving the technical problems existing in the prior art.
The embodiment of the invention provides a bidirectional authentication method based on a block chain, which comprises the following steps:
the chip end sends a uplink request to the server end, wherein an SE chip of the chip end is arranged on the block chain module;
responding to the uplink request, the server verifies the received uplink certificate of the SE chip, and encrypts the ID uploaded by the chip end through the public key of the server after the verification is passed;
the server side issues a random number to the chip side according to the encrypted ID, and encrypts the random number through a chain account public key;
responding to the received encrypted random number, the chip end sends a chain account private key to sign the random number, and uploads the signed random number to the server end;
responding to the received signed random number, the server performs signature verification through a chain account public key, and issues a chain address, a uplink certificate and a response certificate to the chip end after the signature verification is passed;
the chip end writes the received chain address, the uplink certificate and the response certificate into the SE chip, and uploads the data to the blockchain.
Preferably, in response to the uplink request, the server verifies the received uplink certificate of the SE chip, including,
compare whether the specific field of the uplink certificate meets the requirements.
Preferably, the SE chip is internally pre-written with a chip unique ID, a chain account private key, a chain account public key, a chain account address and a server public key.
Preferably, the chip side writes the received chain address, the uplink certificate and the response certificate into the SE chip, wherein the chain address comprises a chain link point address and a data uplink contract address.
Preferably, the mapping relation between the SE chip ID and the account information, the mapping relation between the SE chip ID and the enterprise organization, the mapping relation between the SE chip ID and the related certificate, the SE chip ID activation record and the SE chip ID current state information are stored in the server.
Preferably, after writing the received chain address, the uplink certificate and the response certificate into the SE chip, the chip end sets an activation flag in the SE chip.
Preferably, the chip end and the blockchain can interact through a preset intelligent contract, and the service end and the blockchain can interact through a preset intelligent contract.
Preferably, the blockchain module is integrated in a user application and used for acquiring data information in the user application.
Preferably, the user application includes, but is not limited to, an intelligent washing machine, an intelligent stamp, and an intelligent car washing device.
The embodiment of the invention also provides a bidirectional authentication system based on the block chain, which comprises the following steps:
at least one processor;
a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform any of the blockchain-based mutual authentication methods described above.
According to the bidirectional authentication system and the bidirectional authentication method based on the block chain, related data interaction is carried out through the server side, the chip side and the block chain, and bidirectional security authentication of data before uplink is realized; and the data authentication is ensured to be safe and reliable by encrypting the random number.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a bi-directional authentication method based on blockchain in accordance with an embodiment of the present invention;
FIG. 2 is a block chain based two-way authentication system according to one embodiment of the present invention;
FIG. 3 is a simplified block chain based two-way authentication system according to one embodiment of the present invention;
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, fig. 1 is a flowchart of a bi-directional authentication method based on a blockchain according to an embodiment of the present invention, fig. 2 is a structural diagram of a bi-directional authentication system based on a blockchain according to an embodiment of the present invention, and fig. 3 is a structural diagram of a bi-directional authentication system based on a blockchain according to an embodiment of the present invention.
The invention provides a bidirectional authentication method based on a block chain, which comprises the following steps:
the method comprises the steps that S1, a chip end sends a uplink request to a service end, the service end is requested to verify whether a uplink certificate is legal and correct, an SE chip of the chip end is arranged on a block chain module, in some embodiments, the SE chip can be an MCU or a TEE chip and the like, and the SE chip can be arranged on the block chain module in an integrated or direct embedded mode;
s2, responding to the uplink request, the server side verifies the received uplink certificate of the SE chip, in some embodiments, the uplink certificate is a relevant field requirement, and by comparing specific fields, the server side verifies whether the content of the relevant field has relevant record information in a database, and when the verification is passed, the server side encrypts the ID uploaded by the chip side through a public key;
s3, the server side sends a random number to the chip side according to the encrypted ID, and encrypts the random number through a chain account public key;
s4, responding to the received encrypted random number, and sending a chain account private key to sign the encrypted random number by the chip end, wherein the signing process is specifically that a digest of the encrypted random number is calculated, the calculated digest is encrypted by using the chain account private key to complete signing, and the encrypted random number after signing is uploaded to the server end; in some embodiments, the chain account private key is pre-written inside the chip;
s5, responding to the received signed random number, checking the signature by the server through a chain account public key, specifically, decrypting the received signature by the server through the chain account public key to obtain an encrypted random number abstract calculated by the chip end, calculating the abstract of the encrypted random number by the server in the same calculation mode as the chip end, comparing the abstract with the encrypted random number abstract by the server, if the result is the same, verifying the result, otherwise, failing the verification, and issuing a chain address, a uplink certificate and a response certificate to the chip end after the checking of the signature is passed;
and S6, writing the received chain address, the uplink certificate and the response certificate into the SE chip by the chip end, uploading data to the blockchain, and in some embodiments, writing the chain address in the SE chip to comprise a chain link point address and a data uplink contract address. In some embodiments, the SE chip also has written inside it a chain type, which may be a fun chain or other type of blockchain.
In some embodiments, the SE chip internally pre-writes a chip unique ID, a chain account private key, a chain account public key, a chain account address, and a server public key, with the SE chip itself carrying the server public key.
In some embodiments, a mapping relationship between the SE chip ID and account information, a mapping relationship between the SE chip ID and enterprise organization, a mapping relationship between the SE chip ID and related certificate, a SE chip ID activation record and SE chip ID current state information are stored in a server, wherein the SE chip ID has two states of enabling and disabling.
In some embodiments, after writing the received chain address, the uplink certificate and the response certificate into the SE chip, the chip end sets an activation flag in the SE chip, where the activation flag has a role of judging whether the device is activated or not and mainly has a role of identification, and the activation flag is equivalent to an electrical signal or other signals, and may also be replaced by other fields, such as an online signal or an offline signal.
In some embodiments, the chip side and the blockchain may interact through a preset smart contract, and the server side and the blockchain may interact through a preset smart contract. Specifically, the intelligent contract is equivalent to an electronic agreement contract, and when the intelligent contract is triggered to the relevant condition, the contract is automatically executed. For example, a request command for inquiring data is sent, and the chip end or the server end can log on a platform to inquire the original document of the certificate and the uplink of the hash value through extracting the code and the hash value, so as to inquire the original document information of the uplink, the block information of the hash value uplink, the uplink time and other information; when inquiring the original text information, a user needs to input an extraction code and a certification hash value, the system can grab and inquire the on-chain data in the background, and the user can check the original text information on the previous chain and download the original text information; when inquiring the block information, the user only needs to input the stored hash value, the system can grasp and inquire the data on the chain in the background, and the user can inquire the block information of the uplink and the uplink time through the system.
In some embodiments, the blockchain module is integrated into a user application for obtaining data information in the user application. In one embodiment of the invention, the user applications include, but are not limited to, intelligent washing machines, intelligent stamps, and intelligent car washing equipment. The block chain module can collect data information of the intelligent washing machine, the intelligent seal and the intelligent car washing equipment to be on-line. The block chain module with the SE chip can be integrated in the user application, when the data information of the user application needs to be uplink, the data information to be uplink can be obtained from the block chain module, and then the uplink request is sent to the server through the SE chip.
The embodiment of the invention also provides a bidirectional authentication system based on the block chain, which comprises the following steps:
at least one processor;
a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform any of the blockchain-based mutual authentication methods described above.
The bidirectional authentication system based on the block chain is connected with the terminal electronic equipment, and further can perform operations such as data inquiry and the like through the terminal electronic equipment. Specifically, as used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, a device configured to receive/transmit communication signals via a wireline connection, such as via a public-switched telephone network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface, such as for example, a cellular network, a Wireless Local Area Network (WLAN), a digital television network, such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal. A communication terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "electronic device". Examples of electronic devices include, but are not limited to, satellites or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. The mobile phone is the electronic equipment provided with the cellular communication module.
According to the bidirectional authentication system and the bidirectional authentication method based on the block chain, related data interaction is carried out through the server side, the chip side and the block chain, and bidirectional security authentication of data before uplink is realized; and the data authentication is ensured to be safe and reliable by encrypting the random number.
It should be noted that the terms "comprising" and "having," and any variations thereof, in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other elements not listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A blockchain-based two-way authentication method, comprising:
s1, a chip end sends a uplink request to a server end, wherein an SE chip of the chip end is arranged on a block chain module;
s2, responding to the uplink request, verifying the received uplink certificate of the SE chip by the server, and encrypting the ID uploaded by the chip end through the public key of the server after verification;
s3, the server side sends a random number to the chip side according to the encrypted ID, and encrypts the random number through a chain account public key;
s4, responding to the received encrypted random number, sending a chain account private key by the chip end to sign the random number, and uploading the signed random number to the server end;
s5, responding to the received signed random number, checking the signature by the server through a chain account public key, and issuing a chain address, a uplink certificate and a response certificate to the chip after the checking the signature;
and S6, writing the received chain address, the uplink certificate and the response certificate into the SE chip by the chip end, and uploading the data to the blockchain.
2. The method of claim 1, wherein the server verifies the received SE chip's uplink certificate in response to the uplink request, comprising,
and comparing whether the fields of the uplink certificate meet the requirements, wherein the fields comprise a chip unique ID, a chain account private key, a chain account public key, a chain account address and a server public key.
3. The blockchain-based mutual authentication method of claim 1, wherein the chip side writes the received chain address, the uplink certificate and the response certificate into the SE chip, wherein the chain address includes a link point address and a data uplink contract address.
4. The bi-directional authentication method based on blockchain as in claim 1, wherein the mapping relation between the SE chip ID and the account information, the mapping relation between the SE chip ID and the enterprise organization, the mapping relation between the SE chip ID and the related certificate, the SE chip ID activation record and the SE chip ID current status information are stored in the server.
5. The bi-directional authentication method based on blockchain of claim 1, wherein the chip side sets an activation flag inside the SE chip after writing the received chain address, the uplink certificate and the response certificate inside the SE chip.
6. The blockchain-based mutual authentication method of any of claims 1-5, wherein the chip side interacts with a server side using a preset smart contract based on blockchains.
7. The blockchain-based mutual authentication method of any of claims 1-5, wherein the blockchain module is integrated into a user application for obtaining data information in the user application.
8. The blockchain-based mutual authentication method of claim 7, wherein the user application includes an intelligent washing machine, an intelligent stamp, and an intelligent car washing device.
9. A blockchain-based mutual authentication system, comprising:
at least one processor;
a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the blockchain-based mutual authentication method of any of claims 1-5, 8.
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