WO2019127153A1

WO2019127153A1 - Block generation method and apparatus, storage medium, and block chain network

Info

Publication number: WO2019127153A1
Application number: PCT/CN2017/119136
Authority: WO
Inventors: 王健; 谢辉; 庞洪福
Original assignee: 深圳达闼科技控股有限公司
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2019-07-04
Also published as: CN108235799A; CN108235799B

Abstract

A block generation method and apparatus, a storage medium and a block chain network, which are used for solving the problem of an excessive computing power difference between block generation apparatuses in existing block chain networks. The method comprises: signing, according to private key information in a block generation apparatus, a block generated by the block generation apparatus to obtain a signed block (S101); and publishing the signed block in the block chain network (S102), wherein the signed block indicates, after passing signature verification, that the signed block is generated by the block generation apparatus.

Description

Block generation method, device, storage medium, blockchain network

Technical field

The present disclosure relates to the field of blockchain technology, and in particular, to a block generation method, apparatus, storage medium, and blockchain network.

Background technique

Blockchain technology is a distributed, decentralized, trusted network data consensus storage technology based on a unique block generation mechanism and P2P (Point To Point (point-to-point) network communication mechanism realizes the synchronization problem of distributed computing.

In the related art, the computing power of the nodes participating in the block calculation is uneven. In order to increase the probability of generating the block, the hardware used by the node of the calculation block is also from the CPU (Central). Processing Unit, Central Processing Unit), GPU (Graphics Processing Unit, Graphics Processor, FPGA Programmable Gate Array (Field Programmable Logic Gate Array) has evolved to ASIC (Application-specific Integrated circuit, dedicated chip).

Since the computational power of the block generation device is not limited, the calculation power of different block generation devices is huge, but the blockchain involves a "51% attack" scenario, that is, theoretically more than 51% of the computing power. A node or multiple nodes can perform a "51% attack" on the blockchain, hinder the normal operation of the blockchain, and destroy the data of the blockchain. At present, with the increase of the computing power of a single node, a single or a few nodes can have great computing power together, so that when the computing power of each node in the entire blockchain network is large, "51%" The conditions of the attack are not difficult to achieve, threatening the security of the blockchain network.

Summary of the invention

The main object of the present disclosure is to provide a block generation method, device, storage medium, and blockchain network, which are used to solve the problem that the power calculation difference of the block generation device in the existing blockchain network is too large.

In order to achieve the above object, a first aspect of the present disclosure provides a block generation method, the method being applied to a block generation device, the method comprising:

And signing the block generated by the block generating device according to the private key information built in the block generating device to obtain a signature block;

Advertising the signature block to the blockchain network, where the node device that receives the signature block in the blockchain network is configured to perform signature verification on the signature block, where If the signature authentication of the signature block is successful, it indicates that the signature block is generated by a legal block generating device.

A second aspect of the present disclosure provides a block generation method, the method being applied to a block generation device, the method comprising:

Obtaining a signature block in the blockchain network;

Performing signature verification on the signature block according to the public key information;

After the signature authentication is successful, the workload verification verification is performed on the signature block;

It is determined whether the signature block is added to the blockchain according to the workload proof verification result.

A third aspect of the present disclosure provides a block generating apparatus, the block generating apparatus having built-in private key information, and the block generating apparatus includes:

a key processing module, configured to sign a block generated by the block generating device according to the private key information, to obtain a signature block;

a publishing module, configured to publish the signature block to the blockchain network, where a node device that receives the signature block in the blockchain network is configured to perform signature verification on the signature block, Wherein, if the signature verification of the signature block is successful, it indicates that the signature block is generated by a legal block generating device.

A fourth aspect of the present disclosure provides a block generating apparatus, including:

An obtaining module, configured to acquire a signature block in a blockchain network;

a signature authentication module, configured to perform signature verification on the signature block according to the public key information;

a workload verification module, configured to perform workload verification on the signature block after the signature verification is successful;

A block adding module is configured to determine whether to add the signature block to the blockchain according to the workload proof verification result.

A fifth aspect of the present disclosure provides a block generating apparatus, including:

At least one processor unit, a communication interface, a memory, and a communication bus; the at least one processor unit, the communication interface, and the memory complete communication with each other through the communication bus;

The memory is configured to store program code;

The at least one processor unit is configured to execute the program code to implement the method of the first aspect.

A sixth aspect of the present disclosure provides a block generating apparatus, including:

The memory is configured to store program code;

The at least one processor unit is configured to execute the program code to implement the method of the second aspect.

A seventh aspect of the present disclosure provides a blockchain network, the blockchain network including at least two node devices;

The at least two node devices include a first node device, where the first node device includes the block generating device of the third aspect or the fifth aspect;

The at least two node devices include a second node device, and the second node device includes the block generating device of the fourth aspect or the sixth aspect.

An eighth aspect of the present disclosure provides a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect.

A ninth aspect of the present disclosure provides a computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of the second aspect.

With the above technical solution, after the block generating device generates the block, the block is privately signed, the signature block is obtained, and the signature block is released into the blockchain network, and the blockchain network receives the block. And the node device to the signature block is configured to perform signature verification on the signature block, wherein if the signature verification of the signature block is successful, it indicates that the signature block is generated by a legal block generation device. of. In this way, compared with the prior art, the block is signed by the private key of the blockchain account to authenticate the account, and the technical solution provided by the present disclosure can also perform identity authentication on the hardware device that generates the block, that is, It is said that the node device in the blockchain network can verify the identity of the block generating device by signature authentication of the signature block, so that for the illegal block generating device, the blockchain network can refuse to add the blockchain network. The generated blocks ensure the security of the blockchain.

DRAWINGS

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are the disclosure of the present disclosure. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

FIG. 1 is a schematic flowchart diagram of a method for generating a block according to an embodiment of the present disclosure;

FIG. 2 is a schematic flowchart of generating a block by a block generating apparatus according to an embodiment of the present disclosure;

FIG. 3 is a schematic flowchart of another generated block of a block generating apparatus according to an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart diagram of another method for generating a block according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an implementation environment according to an embodiment of the present disclosure;

6 is a schematic flow chart of a method for generating a block in the implementation environment shown in FIG. 5;

7 is a schematic flow chart of a method for verifying a block in the implementation environment shown in FIG. 5;

FIG. 8 is a schematic structural diagram of a block generating apparatus according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of another block generating apparatus according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of another block generating apparatus according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another block generating apparatus according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of another block generating apparatus according to an embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the present disclosure. It is a partial embodiment of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

In order to make it easier for a person skilled in the art to understand the technical solutions provided by the embodiments of the present disclosure, the related technologies involved will be briefly introduced below.

A blockchain is a decentralized distributed database system in which all nodes in a blockchain network participate in maintenance. It is composed of a series of data blocks generated by cryptography, and each block is a blockchain. One block. According to the order of the generation time, the blocks are linked together in an orderly manner to form a data chain, which is aptly called a blockchain.

Based on PoW (Proof In the block generation mechanism of the Work, the generation of the effective block requires the block generating device to correctly solve a mathematical problem that requires calculation. In general, it contains Nonce (Number Once, non-repeating random value) The block header data is hashed. By adjusting the Nonce, the hash result satisfies certain conditions, and the generated hash value is required to meet certain conditions, such as the first n bits. 0x0. After calculating the hash result satisfying the specific condition, the node device combines the block header data and the block data containing the Nonce into a block for broadcasting, and the other node device recognizes that the block conforms to the format and standard defined by the protocol, This block can be added to the blockchain. For details, refer to the bitcoin application. The block data may include transaction data broadcast by each node device during a transaction.

The embodiment of the present disclosure provides a block generation method, which is applied to a block generation device, and the block generation device has built-in private key information. As shown in FIG. 1, the method includes:

S101. Sign the block generated by the block generating device according to the private key information built in the block generating device to obtain a signature block.

The block generating device may be part of any node device in the blockchain network, or may be a separate device that establishes a communication connection with any node device in the blockchain network. Specifically, the device The block generation device and the node device can be connected through different data buses, for example, USB (Universal) Serial Bus, Universal Ethernet, Bluetooth, Wi-Fi (Wireless-Fidelity), etc.

Illustratively, the tile generation device is communicatively coupled to the first node device in the blockchain network. The first node device is a node device in a blockchain network, and may receive transaction data broadcast by other node devices in the blockchain network through a network interface, and the first node device may obtain the transaction data according to the transaction data. The transaction data generates block data. In this way, the block generating means can acquire the block data from the first node device to generate a block.

S102. Publish the signature block into a blockchain network.

And the node device that receives the signature block in the blockchain network is configured to perform signature verification on the signature block, where if the signature verification of the signature block is successful, the signature block is indicated. It is generated by a legitimate block generating device.

It should be noted that the private key information built in each block generating device in the blockchain network is different, and the block generating device can broadcast its own public key information to other node devices through a specific node device. In this way, after receiving the signature block issued by a certain node device, the corresponding public key is used for signature authentication. If the signature authentication is successful, it indicates that the issued signature block is legal, that is, the signature block is legal. Generated by the block generation device. That is, the block generating device that generates the signature block has the right to add a new block to the blockchain, and can further perform workload verification verification on the block, and verify whether the block conforms to the format and standard defined by the protocol. If the signature device is signed and authenticated, the block is refused to be added in the blockchain, which ensures the security of the blockchain. That is to say, in the specific implementation, the blockchain network can only have the same computing power or The approximate block generating device allocates the public-private key and performs signature verification on the signature block generated by the block generating device, thereby ensuring the consistency of the computing power of each node, and avoiding the single node or a few nodes having the ability to exceed the threshold value calculation. In turn, the formation of "51% attack" is avoided, and the security of the blockchain is improved.

Specifically, when the blockchain network is initialized, the private key and the public key may be allocated only for the tile generating device of the same model and specification. After the initialization is completed, when a new block generating device is added, only the block generating device with similar computing power may be allowed to join, wherein the block chain network adding a new block generating device may be performed by a specific node device, The node device dynamically writes the public key of the newly added block generating device to the blockchain.

In addition, the block generation device can also protect the algorithm for generating the block and its own private key by hardware, and is not easily acquired by others. For example, the block generating means may include a block processor and a key processor, the block processor unit is responsible for generating a block using a specific algorithm, and the private key built in the block generating device is in the key processing In the device, the hardware is used to protect the signature key. For example, the high security cryptographic chip is used, and the key generation, encryption and decryption, signature verification and other calculation processes are all completed in the cryptographic chip to ensure that the signature private key does not leave. A cryptographic chip for high-strength protection of keys.

Thus, in the case of a block processor and a key processor, the block generating device needs to have a specific algorithm and a signature key to generate a valid block, thereby improving the security of the blockchain network.

In order to make those skilled in the art more understand the technical solutions provided by the embodiments of the present disclosure, an algorithm for generating a block by the block generating device is exemplified below.

The first method adopts a specific random number generation method, wherein the target random number generated based on the specific random number generation method may be used for verification by other nodes to confirm whether the target random number is according to the specific random number. Produced by the method. For example, as shown in FIG. 2, the method includes:

S201. Acquire block data, where the block data is generated based on transaction data in a blockchain network.

S202. Set a random number range according to the speed of the block currently generated by the blockchain network, and generate a random number.

S203. Generate a block according to the generated target random number and the block data, wherein the target random number is a random number located within the random number range.

Wherein, the block generating device generates a speed for the same block, and can generate the same random number range. In this way, unlike the PoW workload proofing mechanism generally used in the existing blockchain, in the embodiment of the present disclosure, after acquiring the target random number in the block, the other block generating device may determine that the target is random after obtaining the target random number in the block. Whether the number is within the range of the random number, if the target random number is within the range of the random number, the block can be considered to be verified by the workload proof, and if the target random number is not within the range of the random number, the block can be considered as a block The block is not added to the blockchain by the verification of the workload.

In addition, it is worth noting that, in order to regulate the rate of generating blocks in the blockchain network, when the speed of the currently generated block is too slow, the corresponding generated random number range may be relatively large, thereby improving the random number generator. Generating the probability of the range of the random number, thereby increasing the speed of generating the block; when the speed of the currently generated block is too fast, the corresponding generated random number range may be relatively small, thereby reducing the random number generator generated at the random The probability of the range, which in turn reduces the speed at which the block is generated.

Method 2: Limit the rate at which random numbers are generated. For example, as shown in FIG. 3, the method includes:

S301. Acquire block data, where the block data is generated based on transaction data in a blockchain network.

S302. Set a rate at which a random number is generated according to a speed at which the blockchain network currently generates a block.

S303. Generate a random number according to the rate, and when the generated random number and the hash value of the block header data satisfy a preset condition, use the random number as the target random number, and use the target random number. The block header data and the block data constitute the block.

In the case of mode 2, the workload proof in the blockchain can still use the PoW work proof mechanism, that is, hashing the block header data containing the random number, and adjusting the random number to make the hash result Meet certain conditions and require the generated hash value to meet certain conditions, such as the first n bits being 0x0.

It should be noted that the above-exemplified algorithms for generating random numbers can be integrated into the random number generator in the block generating device, and the protection algorithm is not easily obtained. Moreover, in the second method, in order to prevent the random number generator from being replaced, the random number generator may further include a private key information, and the random number generator performs key processing in the block generating device before starting to generate the random number. The random number generator may be required to send a signature information to verify whether the random number generator is legal. If the signature verification of the random number generator fails, the key processor may refuse to perform the generated block. signature. Similarly, the random number generator can also perform legality verification on the key processor. In this way, only cracking the random number generator or only cracking the key processor can not generate legal blocks, which improves the security of the blockchain.

The embodiment of the present disclosure further provides another block generating method, where the method is applied to a block generating device, as shown in FIG. 4, the method includes:

S401. Acquire a signature block in a blockchain network.

The block generating device itself may include a network connection module for directly accessing the blockchain network, and the battery power supply module enables the device to operate by itself, so that the block generating device can directly obtain the blockchain network. A signature block sent to other nodes. Optionally, the block generating device may be a separate device communicatively coupled to the node device in the blockchain network, such that the block generating device may acquire the node device from the node device from the blockchain network. The received signature block.

S402. Perform signature verification on the signature block according to the public key information.

In a possible implementation manner, the public key information may be pre-stored by the block generating device, and for the blockchain network with the rights control, the node responsible for the rights allocation in the blockchain network may also be Whether the configuration of the preset public key allows the generation of the block, so that after receiving the signature block sent by other nodes, any node can first verify whether the public key of the node has the right to generate the block, and ensure that the node has the right to generate the block. You can't pretend. In another possible implementation manner, the block generating apparatus may also broadcast its own public key information to other node devices through a specific node device (for example, a management node in a private license chain), wherein the specific node device The published public key has the permission to generate the block by default.

S403. After the signature authentication is successful, perform verification of the workload verification on the signature block.

S404. Determine, according to the workload verification result, whether to add the signature block to the blockchain.

Specifically, if the signature verification of the signature block is successful, and the verification of the workload of the signature block is successful, the signature block is written into the blockchain; if the signature authentication of the signature block fails, Or if the verification of the workload of the signature block fails, the signature block is refused to be written into the blockchain. Further, the manner in which each node determines whether the block is successfully written into the blockchain can follow the existing blockchain protocol, which is not limited in this disclosure.

It should be noted that the generation of the signature block can refer to the method shown in FIG. 1 , and details are not described herein again.

In addition, referring to the block generation method shown in FIG. 2 and FIG. 3, the verification of the workload corresponding to different generation modes is also different.

For example, in the case of adopting mode 1, the foregoing verification of the workload verification of the signature block includes: verifying whether the target random number in the signature block is generated according to a specific random number generation method, if the target The random number is generated according to the specific random number generation method, and it is determined that the workload verification is passed. Specifically, the verifying whether the target random number in the signature block is generated according to a specific random number generating method includes: determining a random number range according to a speed of the block currently generated by the blockchain network; Whether the target random number is within the random number range, and if the target random number is located within the random number range, determining that the target random number is generated according to the specific random number generating method.

In the case of the second mode, the verification of the workload of the signature block may be an existing PoW workload proofing method or a PoS (ProofofStake) mechanism, which is not limited in this disclosure.

It is worth noting that each block generating device in the blockchain network can perform signature verification on the signature blocks issued by other nodes, and can also calculate the generated blocks. That is to say, the same block generating device can apply the block generating method shown in FIG. 1 or the block generating method shown in FIG. 2.

The technical solutions provided by the embodiments of the present disclosure are described in detail below in conjunction with the block generation side and the block verification side.

FIG. 5 is a schematic diagram of an implementation environment of an embodiment of the present disclosure. As shown, the implementation environment includes a first node device 51 and a second node device 52, wherein the first node device 51 and the second node device 52 are regions. Any two node devices in the blockchain network 50. The first node device 51 is communicatively coupled to the block generating device 511, and the second node device 52 is communicatively coupled to the block generating device 521.

With reference to FIG. 5, a block generation method according to an embodiment of the present disclosure is shown in FIG. 6 and FIG. 7. As shown in FIG. 6, the method on the block generation side includes:

S601. The first node device 51 acquires at least one transaction data from the blockchain network 50.

S602. The first node device 51 generates block data according to the transaction data.

The block data includes the at least one transaction data.

S603. The block generating device 511 acquires the block data from the first node device 51.

S604. The block generation device 511 sets a random number range according to the current block generation speed, and generates a random number.

S605. After generating the target random number in the range of the random number, the block generating device 511 generates a block according to the target random number and the block data.

S606. The block generating device 511 signs the block by using its own private key to obtain a signature block.

S607. The block generating device 511 sends the signature block to the first node device 51.

S608. The first node device 51 broadcasts the signature block into the blockchain network 50.

As shown in FIG. 7, the method on the block verification side includes:

S701. The second node device 52 receives the signature block broadcast by the first node device 51.

S702. The block generating device 521 acquires the signature block from the second node device 52.

S703. The block generation device 521 performs signature verification on the signature block by using the public key information.

Further, if the signature verification is successful, step S704 is performed, and if not, the second node device may discard the signature block and no further processing is continued.

S704. After the signature authentication succeeds, the block generating device 521 determines a random number range according to the current block generation speed, and determines whether the target random number in the signature block is located in the random number range.

S705. The block generating device 521 sends the determination result to the second node device 52.

S706. If the target random number is located in the random number range, the second node device 52 adds the signature block to the current blockchain, and if the target random number is not in the random number range, The second node device 52 discards the signature block and refuses to write it to the blockchain.

It should be noted that, in the above process, the block generating device 521 of the second node device 52 may also generate a signature block, and broadcast the signature block to the first node device 51 through the second node device 52, the first node device. The block generating device 521 of 51 may perform signature verification on the signature block received by the first node device 51 and subsequent verification of the workload. For details, refer to the above method steps, and details are not described herein again.

The above is merely an example. The block generating device shown in FIG. 5 is a separate device that communicates with the node device. Alternatively, the block generating device may also belong to a part of the node device. In this case, FIG. 6 shows In the above method steps, the interaction between the block generating device and the node device is an internal interaction of the node device. This disclosure does not limit this.

In addition, for the above method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the embodiments described in the specification belong to the preferred embodiment, and the actions involved are It is not necessarily required by the present disclosure. For example, the block generating device may generate a block without acquiring the transaction data.

In a possible implementation manner of the embodiment of the present disclosure, the block generating apparatus may further determine a block generated by the block generating device and a current block chain before generating a block according to the block data. The number of blocks that differ between the latest blocks in the middle, when determining that the number of blocks is not less than a preset threshold m, performing an operation of generating a block, where m is a positive integer greater than or equal to 1, and less than n , n is the number of all node devices in the blockchain network.

That is to say, after the block generating device generates the primary block, it needs to be separated by m blocks before the block can be generated again. Among them, m can be set according to actual needs. For example, m=n-1, that is, the block generating device needs to block the n-1 block to generate the block again. In this case, all n block generating devices must maintain normal operation, otherwise the blockchain The block generation work will stop. For another example, m=1, the block generating device can generate the block again every interval of the block. In this case, m+1 maliciously controlled nodes can form a “51% attack”.

In this way, based on the actual situation of the blockchain network, the size of m is reasonably set, because the same block generating device cannot continuously generate blocks, thereby reducing the "51% attack" caused by the excessive computing power of a certain block generating device. The possibility.

The embodiment of the present disclosure further provides a block generating device 80 for implementing a block generating method provided in FIG. 1. The block generating device 80 has built-in private key information, as shown in FIG. Apparatus 80 includes:

The key processing module 801 is configured to sign the block generated by the block generating device according to the private key information to obtain a signature block.

a publishing module 802, configured to publish the signature block into the blockchain network, where the signature block, after being signed and authenticated, indicates that the signature block is generated by the block generating device of.

The block generating device is configured to generate a block by performing a private key signature on the block, obtain a signature block, and publish the signature block to the blockchain network, wherein the signature is After the block is authenticated, the block indicates that the signature block is generated by the block generating device. In this way, compared with the prior art, the block is signed by the private key of the blockchain account to authenticate the account, and the technical solution provided by the present disclosure can also perform identity authentication on the hardware device that generates the block, that is, It is said that the node device in the blockchain network can verify the identity of the block generating device by signature authentication of the signature block, so that for the illegal block generating device, the blockchain network can refuse to add the blockchain network. The generated blocks ensure the security of the blockchain.

Optionally, the block generating device 80 further includes:

a first obtaining module 803, configured to acquire block data, where the block data is generated based on transaction data in a blockchain network;

a first random number generating module 804, configured to generate a random number according to a specific random number generating method;

a first block generating module 805, configured to generate a block according to the target random number generated by the specific random number generating method and the block data, where the node device in the blockchain network can verify the target random number Whether it is generated according to the specific random number generation method. Optionally, the first random number generating module 804 is further configured to: set a random number range according to a speed of the block currently generated by the blockchain network, where the target random number is located in the random number range A random number inside.

Optionally, as shown in FIG. 9, the block generating device 80 further includes:

a second obtaining module 806, configured to acquire block data, where the block data is generated based on transaction data in a blockchain network;

a second random number generating module 807, configured to set a rate for generating a random number according to a speed of the block currently generated by the blockchain network;

The second block generating module 808 is configured to generate a random number according to the rate, and when the generated random number and the hash value of the block header data satisfy a preset condition, use the random number as the target random number. The target random number, the block header data, and the block data are grouped into the block.

It should be clearly understood by those skilled in the art that, for the convenience and brevity of the description, the specific working process of each module of the above-mentioned block generating device may refer to the corresponding process in the foregoing method embodiment, and details are not described herein again. .

In addition, the division performed by the block generating device component module is only one logical function division, and may be further divided when actually implemented. Moreover, the physical implementation of each module may also be in various manners, which is not limited in this disclosure.

The embodiment of the present disclosure further provides another block generating device 90 for implementing a block generating method provided in FIG. 4. As shown in FIG. 10, the block generating device 90 includes:

An obtaining module 901, configured to acquire a signature block in a blockchain network;

The signature authentication module 902 is configured to perform signature verification on the signature block according to the public key information.

The workload verification module 903 is configured to perform workload verification on the signature block after the signature verification is successful;

The block adding module 904 is configured to determine whether to add the signature block to the blockchain according to the workload proof verification result.

Optionally, the workload proof module 903 is configured to:

Verifying whether the target random number in the signature block is generated according to a specific random number generation method. If the target random number is generated according to the specific random number generation method, it is determined that the workload proof verification is passed.

Optionally, the workload proof module 903 is configured to:

Determining a random number range according to a speed of the block currently generated by the blockchain network;

Determining whether the target random number is within the random number range, and if the target random number is located in the random number range, determining that the target random number is generated according to the specific random number generating method.

It should be clearly understood by those skilled in the art that, for the convenience and brevity of the description, the specific working process of each unit of the above-mentioned block generating apparatus may refer to the corresponding process in the foregoing method embodiment, and details are not described herein again. .

The embodiment of the present disclosure further provides a block generating apparatus 100. As shown in FIG. 11, the block generating apparatus 100 includes:

At least one processor unit (such as processor unit 101 shown in FIG. 10), communication interface 102, memory 103, and communication bus 104; said at least one processor unit, said communication interface 102, and said memory 103 Communication bus 104 completes communication with each other;

The memory 103 is configured to store program code, and the at least one processor unit is configured to execute the program code to implement the block generation method illustrated in FIG. 1, with particular reference to the description of the method embodiment described above with respect to FIG.

Embodiments of the present disclosure also provide a non-transitory computer readable storage medium including instructions, such as the memory 103 described above, executable by a processor of the apparatus 100 to perform a method for generating a corresponding block. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

The embodiment of the present disclosure further provides another block generating device 110. As shown in FIG. 12, the block generating device 110 includes:

At least one processor unit (such as processor unit 111 shown in FIG. 12), communication interface 112, memory 113, and communication bus 114; said at least one processor unit, said communication interface 112, and said memory 113 Communication bus 114 completes communication with each other;

The memory 113 is configured to store a program code;

The at least one processor unit is configured to execute the program code to implement the steps of a block generation method illustrated in FIG. 4, with particular reference to the description of the method embodiment described above with respect to FIG.

The above is only an example. In the specific implementation, the block generating device 110 may further include other components, such as a power supply, etc., which is not limited in this disclosure.

Embodiments of the present disclosure also provide a non-transitory computer readable storage medium including instructions, such as the memory 113 described above, executable by a processor of the apparatus 110 to perform a method for generating a corresponding block. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

Embodiments of the present disclosure also provide a blockchain network, the blockchain network including at least two node devices. The at least two node devices include a first node device, the first node device includes the above-described block generating device 80 or the block generating device 100; the at least two node devices include a second node device, the first The two-node device includes the above-described block generating device 90 or the block generating device 110.

In this way, based on the authority control of the public and private keys, the block generating device with the same computing power is used to form a blockchain network, for example, a blockchain private chain. Among them, the consistency can be that the block generating device adopts a specific random number generating algorithm, and the probability of generating blocks by each block generating device is substantially the same, thereby increasing the difficulty of achieving the "51% attack" condition, thereby improving the difficulty. The security of the blockchain.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical idea of the present disclosure. These simple variations are all within the scope of the disclosure.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not be further described in various possible combinations.

In addition, any combination of various embodiments of the present disclosure may be made as long as it does not deviate from the idea of the present disclosure, and should also be regarded as the disclosure of the present disclosure.

Claims

A block generation method, the method is applied to a block generation device, and the method includes:

And signing the block generated by the block generating device according to the private key information built in the block generating device to obtain a signature block;

Advertising the signature block to the blockchain network, where the node device that receives the signature block in the blockchain network is configured to perform signature verification on the signature block, where If the signature authentication of the signature block is successful, it indicates that the signature block is generated by a legal block generating device.
The method according to claim 1, wherein said signing said block generated by said block generating means according to said private key information built in said block generating means, before said signing block is obtained The method also includes:

Obtaining block data, the block data being generated based on transaction data in a blockchain network;

Generating a random number according to a specific random number generation method;

Generating a block according to the target random number generated by the specific random number generating method and the block data, and the node device in the blockchain network may verify whether the target random number is according to the specific random number generating method produced.
The method according to claim 2, wherein the specific random number generating method comprises: setting a random number range according to a speed of a block currently generated by the blockchain network, wherein the target random number is located A random number within the range of random numbers.
The method according to claim 1, wherein said signing said block generated by said block generating means according to said private key information built in said block generating means, before said signing block is obtained The method also includes:

Obtaining block data, the block data being generated based on transaction data in a blockchain network;

Setting a rate at which a random number is generated according to a speed at which the blockchain network currently generates a block;

Generating a random number according to the rate, and when the generated random number and the hash value of the block header data satisfy a preset condition, using the random number as the target random number, and the target random number, the area The block header data and the block data constitute the block.
The method according to any one of claims 1 to 4, wherein the block generating means comprises a key processor and a random number generator, and private key information of the block generating means is built in the secret In the key processor, the random number generator has another private key information built in, and the method further includes:

Before the random number generator starts generating the random number, the random number generator performs mutual authentication with the key processor to verify the legality of the identity of both parties.
A block generation method, the method is applied to a block generation device, and the method includes:

Obtaining a signature block in the blockchain network;

Performing signature verification on the signature block according to the public key information;

After the signature authentication is successful, the workload verification verification is performed on the signature block;

It is determined whether the signature block is added to the blockchain according to the workload proof verification result.
The method according to claim 6, wherein said verifying the workload of said signature block comprises:

Verifying whether the target random number in the signature block is generated according to a specific random number generation method. If the target random number is generated according to the specific random number generation method, it is determined that the workload proof verification is passed.
The method according to claim 7, wherein the verifying whether the target random number in the signature block is generated according to a specific random number generation method comprises:

Determining a random number range according to a speed of the block currently generated by the blockchain network;

Determining whether the target random number is within the random number range, and if the target random number is located in the random number range, determining that the target random number is generated according to the specific random number generating method.
A block generating device, wherein the block generating device has built-in private key information, and the block generating device includes:

a key processing module, configured to sign a block generated by the block generating device according to the private key information, to obtain a signature block;

a publishing module, configured to publish the signature block to the blockchain network, where a node device that receives the signature block in the blockchain network is configured to perform signature verification on the signature block, Wherein, if the signature verification of the signature block is successful, it indicates that the signature block is generated by a legal block generating device.
The device according to claim 9, further comprising:

a first obtaining module, configured to acquire block data, where the block data is generated based on transaction data in a blockchain network;

a first random number generating module, configured to generate a random number according to a specific random number generating method;

a first block generating module, configured to generate a block according to the target random number generated by the specific random number generating method and the block data, where the node device in the blockchain network can verify whether the target random number is Produced according to the specific random number generation method.
The apparatus according to claim 10, wherein the first random number generating module is further configured to:

And setting a random number range according to a speed of the block currently generated by the blockchain network, where the target random number is a random number located within the random number range.
The device according to claim 9, further comprising:

a second obtaining module, configured to acquire block data, where the block data is generated based on transaction data in a blockchain network;

a second random number generating module, configured to set a rate for generating a random number according to a speed of the block currently generated by the blockchain network;

a second block generating module, configured to generate a random number according to the rate, and when the generated random number and the hash value of the block header data satisfy a preset condition, use the random number as the target random number, and The target random number, the block header data and the block data constitute the block.
A block generating device, comprising:

An obtaining module, configured to acquire a signature block in a blockchain network;

a signature authentication module, configured to perform signature verification on the signature block according to the public key information;

a workload verification module, configured to perform workload verification on the signature block after the signature verification is successful;

A block adding module is configured to determine whether to add the signature block to the blockchain according to the workload proof verification result.
The apparatus of claim 13 wherein said workload proof module is for:

Verifying whether the target random number in the signature block is generated according to a specific random number generation method. If the target random number is generated according to the specific random number generation method, it is determined that the workload proof verification is passed.
The apparatus of claim 14 wherein said workload proof module is for:

Determining a random number range according to a speed of the block currently generated by the blockchain network;

Determining whether the target random number is within the random number range, and if the target random number is located in the random number range, determining that the target random number is generated according to the specific random number generating method.
A block generating device, comprising:

At least one processor unit, a communication interface, a memory, and a communication bus; the at least one processor unit, the communication interface, and the memory complete communication with each other through the communication bus;

The memory is configured to store program code;

The at least one processor unit is configured to execute the program code to implement the method of any one of claims 1 to 4.
The apparatus according to claim 16, wherein said communication interface is configured to establish a communication connection with a node device in said blockchain network, so that said tile generating means acquires said said device from said node device Block data, and the signature block is published to the blockchain network by the node device.
The apparatus according to claim 16 or 17, wherein said block generating means further comprises a key processor and a random number generator, and private key information of said block generating means is built in said key processing In the device, the random number generator has another private key information built in;

Before the random number generator starts generating the random number, the random number generator performs mutual authentication with the key processor to verify the legality of the identity of both parties.
A block generating device, comprising:

At least one processor unit, a communication interface, a memory, and a communication bus; the at least one processor unit, the communication interface, and the memory complete communication with each other through the communication bus;

The memory is configured to store program code;

The at least one processor unit is configured to execute the program code to implement the method of any one of claims 6 to 8.
The apparatus according to claim 19, wherein said communication interface is configured to establish a communication connection with a node device in said blockchain network, so that said tile generating means acquires said said device from said node device Signature block.
A blockchain network, characterized in that the blockchain network comprises at least two node devices;

The at least two node devices include a first node device, the first node device comprising the block generating device of claim 16;

The at least two node devices include a second node device, and the second node device includes the tile generating device of claim 19.
A computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of any one of claims 1 to 5.
A computer readable storage medium for storing a computer program, the computer program comprising instructions for performing the method of any one of claims 6 to 8.