TW202425573A - Blockchain system with both real-name and anonymity and method thereof - Google Patents

Abstract

A blockchain system with both real-name and anonymity and method thereof is disclosed. By providing one of a real-name identity and an anonymous identity for sending blockchain transaction and calling a blockchain contract, when the real-name identity is selected, performing a registration process to record a real-name information and an identity type and requiring an electronic certificate to register to the blockchain, when the anonymous identity is selected, generating a pair of asymmetric keys, and the public key represents the anonymous identity and to verify the signature, and using the private key for signature. The mechanism is to help to improve the usability of blockchain for both anonymity and real name.

Description

Blockchain system and method that takes into account both real name and anonymity

The present invention relates to a blockchain system and a method thereof, and in particular to a blockchain system and a method thereof that take into account both real name and anonymity.

In recent years, with the rapid development of blockchain, various blockchain applications have emerged like mushrooms after rain. However, how to make blockchain take into account both anonymity and real name has always been a problem that all manufacturers are eager to solve.

Generally speaking, traditional blockchains are inherently anonymous, and other features include decentralization, immutability, traceability, and encryption security, etc. However, in many application scenarios, real-name registration is still necessary and indispensable, so only anonymity will have the problem of poor usability of blockchains.

In view of this, some manufacturers have proposed real-name authentication technology combined with Know Your Customer (KYC), which achieves real-name system by mandatory verification of customer identity. However, this method requires users to fill in cumbersome personal information, and it cannot take into account both real-name and anonymity at the same time, so it still cannot effectively solve the problem of poor usability of blockchain.

In summary, it can be seen that the blockchain has long been plagued by poor usability in previous technologies, so it is necessary to propose improved technical means to solve this problem.

The present invention discloses a blockchain system and method that takes both real name and anonymity into consideration.

First, the present invention discloses a blockchain system that takes into account both real name and anonymity. The system includes: a prompt module, a certificate module, a real name module, an anonymous module and an execution module. The prompt module is used to prompt the user to select one of the real name identity and the anonymous identity. When the real name identity is detected, the registration procedure is executed to record the real name information and the identity type. When the anonymous identity is detected, a pair of asymmetric keys is generated, and the public key of the pair of asymmetric keys represents the anonymous identity. The certificate module is connected to the prompt module, and after the registration procedure is executed, the blockchain system requires Provide an electronic certificate and register the electronic certificate with the blockchain, wherein the electronic certificate contains real-name information and is issued by a third-party certificate center; the real-name module is connected to the certificate module, so that when the real-name user sends a blockchain transaction, the real-name information is embedded in the sender field of the blockchain transaction; the anonymous module is connected to the prompt module, so that when the anonymous user sends a blockchain transaction, the real-name information is first inserted into the sender field of the blockchain transaction. The private key of the so-called key is used to sign the blockchain transaction, and then the public key representing the anonymous identity is annotated on the blockchain transaction, so that the blockchain system can verify the blockchain transaction with the public key to confirm the anonymous identity and correctness; and the execution module is connected to the real-name module and the anonymous module, so that when the host with the real-name identity calls the blockchain contract, the electronic certificate is used to sign the contract transaction of the blockchain contract to verify the host. The host's identity and the correctness of the contract transaction are verified, and after the verification is passed, the blockchain contract program is called. When the host with an anonymous identity calls the blockchain contract, the private key is used to sign the contract transaction of the blockchain contract, and the blockchain contract program uses the public key to verify the contract transaction to verify the host's anonymous identity and the correctness of the contract transaction, and after the verification is passed, the blockchain contract program is called.

In addition, the present invention also discloses a blockchain method that takes into account both real name and anonymity, which is applied in a blockchain system, and the steps include: the blockchain system prompts the user to select one of the real name identity and the anonymous identity. When the real name identity is detected, the registration procedure is executed to record the real name information and the identity type. When the anonymous identity is detected, a pair of asymmetric keys is generated, and the public key of the pair of asymmetric keys is used to represent the user's identity. Anonymous identity; after the registration process is executed, the blockchain system requires the provision of an electronic certificate and registers the electronic certificate with the blockchain, wherein the electronic certificate contains real-name information and is issued by a third-party certificate center; when a user with a real-name identity sends a blockchain transaction, the blockchain system embeds the real-name information into the sender field of the blockchain transaction, and when a user with an anonymous identity sends a blockchain transaction, the blockchain system first uses The private key of the asymmetric key is used to sign the blockchain transaction, and the public key representing the anonymous identity is annotated on the blockchain transaction, so that the blockchain system can verify the blockchain transaction with the public key to confirm the anonymous identity and correctness; when the host with real-name identity calls the blockchain contract, the blockchain system uses the electronic certificate to sign the blockchain contract transaction to verify the identity of the host and the contract transaction. The correctness of the transaction, and after the verification is passed, the blockchain contract program is called; and when a host with an anonymous identity calls a blockchain contract, the blockchain system uses the private key to sign the contract transaction of the blockchain contract, and the blockchain contract program uses the public key to verify the contract transaction to verify the anonymous identity of the host and the correctness of the contract transaction, and after the verification is passed, the blockchain contract program is called.

The system and method disclosed in the present invention are as described above. The difference from the prior art is that the present invention provides a choice between a real-name identity and an anonymous identity to send blockchain transactions and call blockchain contracts. When a real-name identity is selected, a registration procedure is executed to record the real-name information and identity type and an electronic certificate is required to register to the blockchain. When an anonymous identity is selected, a pair of asymmetric keys is generated, and a public key is used to represent the anonymous identity and verify the seal, and a private key is used for signing.

Through the above-mentioned technical means, the present invention can achieve the technical effect of improving the usability of blockchain while taking into account both anonymity and real names.

The following will be used in conjunction with drawings and embodiments to explain the implementation of the present invention in detail, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

Before explaining the blockchain system and method for both real-name and anonymity disclosed in the present invention, the terms defined by the present invention are explained first. The "blockchain contract" mentioned in the present invention refers to a smart contract or a smart contract. In fact, the smart contract refers to a computer program that drives the execution of instructions based on established conditions and transmitted information. Specifically, the smart contract is written in a programming language, such as Solidity, Serpent, LLL, EtherScript, Sidechain, etc. It can contain various functions, events, parameter states, etc. Taking "Ethereum" as an example, its smart contract is compiled to obtain binary code and application binary interface (ABI) so that the smart contract can be broadcast to the blockchain network, waiting for miners or validators to put the smart contract on the blockchain and obtain the corresponding address (also called contract address, smart contract address).

The following diagrams are used to further explain the blockchain system and method of the present invention that takes into account both real names and anonymity. Please refer to "Figure 1" first. "Figure 1" is a system block diagram of the blockchain system of the present invention that takes into account both real names and anonymity. This system includes: a prompt module 110, a certificate module 120, a real-name module 130, an anonymous module 140 and an execution module 150. Among them, the prompt module 110 is used to prompt the user to select one of the real-name identity and the anonymous identity. When the real-name identity is detected, the registration procedure is executed to record the real-name information and the identity type. When the anonymous identity is detected, a pair of asymmetric keys (Asymmetric Key) is generated, that is, a pair of key pairs (Key-Pair) with a corresponding relationship, but different keys are used for encryption and decryption. For example, a pair of public keys and private keys, the public key can be used for encryption or signature verification (or simply referred to as "seal verification"), and the private key can be used for decryption or signature. Then, the public key of this pair of asymmetric keys is used to represent the anonymous identity. In actual implementation, the types of identities recorded may include ticket platforms, ticket issuers, ticket distributors, ticket underwriters and trust institutions, etc.

The certificate module 120 is connected to the prompt module 110 to register the electronic certificate with the blockchain system after the registration process is executed, wherein the electronic certificate includes real-name information and is issued by a third-party certificate center. In actual implementation, the third-party certificate center refers to a trusted third-party certificate management center (Certificate Authority, CA).

The real-name module 130 is connected to the credential module 120 to embed the real-name information into the sender field of the blockchain transaction when the user with the real-name identity sends a blockchain transaction. For example, assuming that the real-name information is personal information such as name, ID number, etc., the real-name module 130 will embed it into the sender field of the blockchain transaction for the purpose of identifying the real-name identity.

The anonymous module 140 is connected to the prompt module 110, and is used to sign the blockchain transaction with the private key of the asymmetric key pair when the anonymous user sends a blockchain transaction, and then annotate the public key representing the anonymous identity on the blockchain transaction, so that the blockchain system 100 can verify the blockchain transaction with the public key to confirm the anonymous identity and correctness. In actual implementation, the blockchain system 100 can be composed of multiple node hosts connected by a wired network (such as Ethernet) or a wireless network (such as Wi-Fi, ZigBee, CoAP (Constrained Application Protocol), MQTT (Message Queuing Telemetry Transport)) or similar wireless transmission technologies.

The execution module 150 is connected to the real-name module 130 and the anonymous module 140, and is used to use the electronic certificate to sign the contract transaction of the blockchain contract when the host with the real-name identity calls the blockchain contract to verify the identity of the host and the correctness of the contract transaction. After the verification is passed, the blockchain contract program (for example: the logic of the smart contract) is called. Instructions or custom functions, etc.), and when a host with an anonymous identity calls a blockchain contract, the private key is used to sign the contract transaction of the blockchain contract, and the blockchain contract program uses the public key to verify the contract transaction to verify the anonymous identity of the host and the correctness of the contract transaction, and after the verification is passed, the corresponding blockchain contract program is called. In short, the execution module 150 will use different methods to verify the identity of the host and the correctness of the contract transaction because of different identities calling the blockchain contract, so as to call and execute the corresponding blockchain contract program. In actual implementation, the blockchain system provides an application programming interface (API) so that the blockchain contract can identify whether the user calling the contract transaction is a real-name identity or an anonymous identity through this API. In addition, the blockchain contract can limit the contract transaction to be called by one of the real-name identity and the anonymous identity according to the API. The blockchain contract can even limit the identity type of the real-name identity according to the API called by the host with the real-name identity. In other words, in addition to satisfying the real-name identity, its restrictions can also be subdivided into different identity types.

It should be particularly noted that in actual implementation, the modules described in the present invention can be implemented in various ways, including software, hardware or any combination thereof. For example, in some embodiments, each module can be implemented using software and hardware or one of them. In addition, the present invention can also be implemented partially or completely based on hardware. For example, one or more modules in the system can be implemented through integrated circuit chips, system on chip (SoC), complex programmable logic device (CPLD), field programmable gate array (FPGA), etc. The present invention can be a system, method and/or computer program. The computer program may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement aspects of the invention, and the computer-readable storage medium may be a tangible device that can retain and store instructions for use by an instruction execution device. The computer-readable storage medium may be, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: hard disks, random access memory, read-only memory, flash memory, optical disks, floppy disks, and any suitable combination of the foregoing. As used herein, computer-readable storage media is not to be construed as a transient signal per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical signals through optical fiber cables), or electrical signals transmitted through wires. In addition, the computer-readable program instructions described herein may be downloaded from the computer-readable storage media to various computing/processing devices, or downloaded to external computer devices or external storage devices through a network, such as the Internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, optical fiber transmission, wireless transmission, routers, firewalls, switches, hubs, and/or gateways. The network card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing/processing device. The computer program instructions for executing the operation of the present invention can be assembly language instructions, instruction set architecture instructions, machine instructions, machine-related instructions, microinstructions, firmware instructions, or source code or object code (Object Code) written in any combination of one or more programming languages, wherein the programming language includes object-oriented programming languages, such as Common Lisp, Python, C++, Objective-C, Smalltalk, Delphi, Java, Swift, C#, Perl, Ruby and PHP, as well as conventional procedural programming languages, such as C language or similar programming languages. The computer program instructions may be executed entirely on the computer, partially on the computer, as a separate software, partially on the client computer and partially on the remote computer, or entirely on the remote computer or server.

Please refer to "FIG. 2A" and "FIG. 2B", which are flowcharts of the method of the present invention for taking into account both real name and anonymity. The method is applied in the blockchain system 100, and the steps include: the blockchain system 100 prompts the user to select one of the real name identity and the anonymous identity. When the real name identity is detected, the registration procedure is executed to record the real name information and the identity type. When the anonymous identity is detected, a pair of asymmetric keys are generated, and The public key of the asymmetric key pair represents the anonymous identity (step 210); after the registration procedure is executed, the blockchain system 100 requires an electronic certificate and registers the electronic certificate with the blockchain, wherein the electronic certificate includes real-name information and is issued by a third-party certification center (step 220); when the real-name user sends a blockchain transaction, the blockchain system 100 embeds the real-name information into the sender field of the blockchain transaction, and when the anonymous user sends a blockchain transaction When performing a blockchain transaction, the blockchain system 100 first signs the blockchain transaction with the private key of the asymmetric key pair, and then annotates the public key representing the anonymous identity on the blockchain transaction, so that the blockchain system 100 verifies the blockchain transaction with the public key to confirm the anonymous identity and correctness (step 230); when the host with real-name identity calls the blockchain contract, the blockchain system 100 uses the electronic certificate to sign the blockchain contract transaction to verify the host's The host verifies the correctness of the anonymous identity and the contract transaction, and after the verification is passed, calls the blockchain contract program (step 240); when the host with an anonymous identity calls the blockchain contract, the blockchain system 100 uses the private key to sign the contract transaction of the blockchain contract, and the blockchain contract program uses the public key to verify the contract transaction to verify the anonymous identity of the host and the correctness of the contract transaction, and after the verification is passed, calls the blockchain contract program (step 250). Through the above steps, you can choose between real-name identity and anonymous identity to send blockchain transactions and call blockchain contracts. When real-name identity is selected, the registration process is executed to record the real-name information and identity type and request an electronic certificate to register to the blockchain. When anonymous identity is selected, a pair of asymmetric keys is generated, and the public key represents the anonymous identity and the seal, and the private key is used for signing.

The following is explained in the form of an embodiment in conjunction with "Figure 3" and "Figure 4". Please refer to "Figure 3" first. "Figure 3" is a schematic diagram of selecting an anonymous identity or a real-name identity using the present invention. In actual implementation, the blockchain system 100 can generate a selection window 300, prompting the user to select a real-name identity or an anonymous identity through a selection component 310. Among them, assuming that a real-name identity is selected, the real-name information and identity type can also be entered through the input component 311. It should be particularly noted that although the input component 311 is used as an example here, the present invention is not limited to this. Any method that can input real-name information and identity types is within the scope of application of the present invention, such as: using a drop-down menu. Then, after the user has made his selection, he can click the confirmation component 320 to confirm his selection. In this way, when the blockchain system 100 detects that the user has selected a real-name identity, it can execute a registration procedure to record the content input by the input component 311 as real-name information and identity type; on the contrary, if it is detected that an anonymous identity is selected, the blockchain system generates a pair of asymmetric keys (including a public key and a private key), and uses the public key to represent the anonymous identity.

As shown in "Figure 4", "Figure 4" is a schematic diagram of the difference between the real-name identity and the anonymous identity of the present invention. Taking the process 410 of the real-name identity as an example, after the user selects the real-name identity, the registration procedure is executed to record the real-name information and the identity type, and the user is requested to obtain an electronic certificate to register to the blockchain. When a person with a real-name identity sends a blockchain transaction, the blockchain system 100 will embed the real-name information into the sender field of the blockchain transaction. In addition, when calling a blockchain contract, the blockchain system will use the aforementioned required electronic certificate to sign the contract transaction in order to verify the correctness of the identity and the contract transaction, and call the blockchain contract program after the verification is passed. Next, taking the anonymous identity process 420 as an example, when the user selects the anonymous identity, the blockchain system 100 generates a pair of asymmetric keys (including a public key and a private key), and uses the public key to represent the anonymous identity. When the anonymous identity sends a blockchain transaction, it is first signed with the private key, and then the corresponding public key is annotated in the blockchain transaction, so that the blockchain system 100 can verify the blockchain transaction based on the public key to confirm the anonymous identity and correctness. Similarly, when an anonymous person calls a blockchain contract, the blockchain system 100 will sign the contract transaction with a private key, and the blockchain contract program will use a public key to verify the contract transaction, and only after the verification is passed will the blockchain contract program be allowed to be called. In this way, both real-name and anonymous identity operations can be taken into account on the blockchain.

In summary, the difference between the present invention and the prior art is that the present invention provides a choice between a real-name identity and an anonymous identity for sending blockchain transactions and calling blockchain contracts. When a real-name identity is selected, a registration procedure is performed to record the real-name information and identity type and an electronic certificate is required to be registered to the blockchain. When an anonymous identity is selected, a pair of asymmetric keys is generated, and a public key is used to represent the anonymous identity and verify the seal, and a private key is used for signing. This technical means can solve the problems existing in the prior art, thereby achieving the technical effect of improving the usability of the blockchain that takes into account both anonymity and real names.

Although the present invention is disclosed as above by the aforementioned embodiments, they are not used to limit the present invention. Anyone skilled in similar techniques can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

100: Blockchain system 110: Prompt module 120: Certificate module 130: Real-name module 140: Anonymous module 150: Execution module 300: Selection window 310: Select component 311: Input component 320: Confirm component 410: Real-name identity process 420: Anonymous identity process Step 210: The blockchain system prompts the user to select one of a real-name identity and an anonymous identity. When the real-name identity is detected, a registration procedure is executed to record a real-name message and an identity type. When the anonymous identity is detected, a pair of asymmetric keys is generated, and a public key of the pair of asymmetric keys represents the anonymous identity. Step 220: After the registration procedure is executed, the blockchain system requires an electronic certificate and registers the electronic certificate with a blockchain, wherein the electronic certificate contains the real-name message and is issued by a third-party certification center. Step 230: When the user with the real-name identity sends a blockchain transaction, the blockchain system embeds the real-name information into a sender field of the blockchain transaction. When the user with the anonymous identity sends the blockchain transaction, the blockchain system first signs the blockchain transaction with a private key of the asymmetric key pair, and then annotates the public key representing the anonymous identity on the blockchain transaction, so that the blockchain system verifies the blockchain transaction with the public key to confirm the anonymous identity and correctness. Step 240: When a host with the real-name identity calls a blockchain contract, the blockchain system uses the electronic certificate to sign a contract transaction of the blockchain contract to verify the identity of the host and the correctness of the contract transaction, and after the verification is passed, calls a blockchain contract program Step 250: When the host with the anonymous identity calls the blockchain contract, the blockchain system uses the private key to sign the contract transaction of the blockchain contract, and the blockchain contract program uses the public key to verify the contract transaction to verify the anonymous identity of the host and the correctness of the contract transaction, and after the verification is passed, the blockchain contract program is called

Figure 1 is a system block diagram of the blockchain system of the present invention that takes into account both real names and anonymity. Figures 2A and 2B are method flow charts of the blockchain method of the present invention that takes into account both real names and anonymity. Figure 3 is a schematic diagram of selecting an anonymous identity or a real name identity when applying the present invention. Figure 4 is a schematic diagram of the difference between the real name identity and the anonymous identity of the present invention.

100:Blockchain system

110: Prompt module

120: Certificate module

130: Real-name module

140:Anonymous module

150: Execution module

Claims (10)

A blockchain system that takes into account both real names and anonymity, the system comprising: A prompt module, used to prompt a user to select one of a real name identity and an anonymous identity. When the real name identity is detected to be selected, a registration procedure is executed to record a real name message and an identity type. When the anonymous identity is detected to be selected, a pair of asymmetric keys is generated, and a public key of the pair of asymmetric keys is used to represent the anonymous identity; A certificate module, connected to the prompt module, is used for the blockchain system to request an electronic certificate after the registration procedure is executed, and register the electronic certificate with a blockchain, wherein the electronic certificate contains the real-name information and is issued by a third-party certificate center; A real-name module, connected to the certificate module, is used for when the user with the real-name identity sends a blockchain transaction, to embed the real-name information into a sender field of the blockchain transaction; An anonymous module connected to the prompt module is used to sign the blockchain transaction with a private key of the asymmetric key when the anonymous user sends the blockchain transaction, and then annotate the public key representing the anonymous identity on the blockchain transaction, so that the blockchain system verifies the blockchain transaction with the public key to confirm the anonymous identity and correctness; and An execution module is connected to the real-name module and the anonymous module, and is used to use the electronic certificate to sign a contract transaction of the blockchain contract when a host with the real-name identity calls a blockchain contract to verify the identity of the host and the correctness of the contract transaction, and after the verification is passed, call a blockchain contract program, and when the host with the anonymous identity calls the blockchain contract, use the private key to sign the contract transaction of the blockchain contract, and the blockchain contract program uses the public key to verify the contract transaction to verify the anonymous identity of the host and the correctness of the contract transaction, and after the verification is passed, call the blockchain contract program. A blockchain system that takes into account both real names and anonymity as in claim 1, wherein the identity types include ticket platforms, ticket issuers, ticket distributors, ticket underwriters, and trust institutions. As claimed in claim 1, a blockchain system that takes into account both real names and anonymity, wherein the blockchain system provides an application programming interface, and the blockchain contract identifies the user who calls the contract transaction as the real-name identity or the anonymous identity through the application programming interface. A blockchain system that takes into account both real names and anonymity as in claim 3, wherein the blockchain contract restricts the contract transaction from being called by one of the real-name identity and the anonymous identity according to the application programming interface. A blockchain system that takes into account both real name and anonymity as in claim 3, wherein the blockchain contract limits the identity type of the real name identity based on the application programming interface called by the host with the real name identity. A blockchain method that takes into account both real name and anonymity is applied in a blockchain system, and its steps include: The blockchain system prompts the user to select one of a real name identity and an anonymous identity. When the real name identity is detected to be selected, a registration procedure is executed to record a real name message and an identity type. When the anonymous identity is detected to be selected, a pair of asymmetric keys is generated, and a public key of the pair of asymmetric keys is used to represent the anonymous identity; After the registration procedure is executed, the blockchain system requires an electronic certificate and registers the electronic certificate with a blockchain, wherein the electronic certificate contains the real-name information and is issued by a third-party certification center; When the user with the real-name identity sends a blockchain transaction, the blockchain system embeds the real-name information into a sender field of the blockchain transaction. When the user with the anonymous identity sends the blockchain transaction, the blockchain system first signs the blockchain transaction with a private key of the asymmetric key pair, and then annotates the public key representing the anonymous identity on the blockchain transaction, so that the blockchain system verifies the blockchain transaction with the public key to confirm the anonymous identity and correctness; When a host with the real-name identity calls a blockchain contract, the blockchain system uses the electronic certificate to sign a contract transaction of the blockchain contract to verify the identity of the host and the correctness of the contract transaction, and after the verification is passed, calls a blockchain contract program; and When the host with the anonymous identity calls the blockchain contract, the blockchain system uses the private key to sign the contract transaction of the blockchain contract, and the blockchain contract program uses the public key to verify the contract transaction to verify the anonymous identity of the host and the correctness of the contract transaction, and after the verification is passed, calls the blockchain contract program. As in claim 6, a blockchain method that takes into account both real names and anonymity, wherein the identity types include ticket platforms, ticket issuers, ticket distributors, ticket underwriters, and trust institutions. As claimed in claim 6, the blockchain method takes into account both real name and anonymity, wherein the blockchain system provides an application programming interface, and the blockchain contract identifies the user who calls the contract transaction as the real name identity or the anonymous identity through the application programming interface. A blockchain method that takes into account both real name and anonymity as in claim 8, wherein the blockchain contract restricts the contract transaction from being called by one of the real name identity and the anonymous identity according to the application programming interface. A blockchain method that takes into account both real name and anonymity as in claim 8, wherein the blockchain contract limits the identity type of the real name identity based on the application programming interface called by the host having the real name identity.

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