CN110457389B - Bottom layer method for synchronizing information of block chain multi-chain data - Google Patents
Bottom layer method for synchronizing information of block chain multi-chain data Download PDFInfo
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Abstract
A bottom layer method for synchronizing block chain multi-chain data information comprises the following steps: step S1, a multi-chain data information synchronous processing module acquires data information to be synchronized, and then the data information is packaged in a new block by utilizing a consensus mechanism of a block chain system, and the new block is marked as a candidate block of a touch block by the block chain system; step S2, after candidate blocks of the 'touch block' are generated, continuously detecting signals sent by a multi-chain verification module outside the block chain system, and acquiring the nearest block in the current main chain when the prepared signals are detected; step S3, pointing the nearest block in the acquired current main chain to a candidate block of the 'touch block', and rising the candidate block of the 'touch block' to be the 'touch block'; and S4, inquiring synchronous information in the touch block. According to the method, the information synchronization processing module of the multi-chain data of the block chain is combined with the verification module outside the block chain, so that the information synchronization of the multi-chain data can be effectively realized; and in the information synchronization process, the security of interaction is ensured by adopting a cryptography technology, and the method is applicable to a multi-chain network system formed by different block chain systems.
Description
Technical Field
The invention belongs to the technical field of block chain information, and particularly relates to a bottom layer method for synchronizing block chain multi-chain data information.
Background
At present, the research process of the block chain bottom technology goes to a bottleneck period, and most of block chain industries hold great expectations for popularization of block chains. Because of the great variety of blockchain platforms today, the underlying design of each blockchain platform is unique. However, the blockchain bottom layer uses a consensus mechanism to generate blocks for recording data, and if a multi-chain system wants to record several pieces of related information on different chains at the same time, the time of recording information on the chains is not synchronous due to different consensus mechanisms and different block generation manners, which causes a plurality of unavoidable problems in the multi-chain system. Therefore, it is a serious problem to keep the related data between different block chains synchronized.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a bottom layer method for synchronizing the information of the multi-chain data of the block chain, wherein the information synchronization processing module of the multi-chain data of the block chain is combined with a verification module outside the block chain, so that the information synchronization of the multi-chain data can be effectively realized; and in the information synchronization process, the security of interaction is ensured by adopting a cryptography technology, and the method is applicable to a multi-chain network system formed by different block chain systems.
The invention provides a bottom layer method for synchronizing information of block chain multi-chain data, which comprises the following steps:
step S1, a multi-chain data information synchronous processing module acquires data information to be synchronized, and then the data information is packaged in a new block by utilizing a consensus mechanism of a block chain system, and the new block is marked as a candidate block of a touch block by the block chain system;
step S2, after candidate blocks of the 'touch block' are generated, continuously detecting signals sent by a multi-chain verification module outside the block chain system, and acquiring the nearest block in the current main chain when the prepared signals are detected;
step S3, pointing the nearest block in the acquired current main chain to a candidate block of the 'touch block', and rising the candidate block of the 'touch block' to be the 'touch block';
and S4, inquiring synchronous information in the touch block.
As a further technical solution of the present invention, a "touch pad" is a block used for specially recording multi-chain synchronization data information among all blocks of a regional chain.
Further, the nearest block in the current backbone is the block that was most recently generated and present on the backbone from all blocks of the blockchain.
Further, in step S3, the nearest block in the current main chain points to the Hash value of the candidate block of the "touch block".
Further, the verification module sends a final signal to each blockchain system, the final signal being an integrated signal of whether the blockchain system is ready.
Further, the signal sent by the multi-chain verification module is encrypted and digitally signed by adopting a cryptography algorithm, wherein the cryptography algorithm is an elliptic linear algorithm, and the specific encryption process is as follows:
before the regional chain system sends the signal content, the multi-chain verification module presets an elliptic curve Ep (a, b), and selects one point above the elliptic curve Ep as a base point G; the local chain system generates a public key, i.e.,
publicKey＝privateKey G；
the multi-chain verification module sends the elliptic curve Ep (a, b), the public key public Key and the base point G to the blockchain system, after the blockchain system receives the information, the content of the signal to be sent is encoded to a point M on the curve Ep (a, b) and a random integer r is generated, the blockchain system calculates C1 and C2 according to M and r, and the C1 and C2 are points on two rectangular coordinate systems calculated according to M and r, namely,
C1＝M+r×publicKey
C2＝r×G
and sends C1 and C2 to the multiplex authentication module.
Further, the elliptic curve signing process is as follows:
the regional chain system generates a group of public and private key pairs, the real point G=G (x, y), a random number r is selected, and S= (H+Kx/r) is calculated through the information M, the hash value H and the private key K; and finally, the message M and the signature { rG, S } are sent to a multi-chain verification module, and the signature is verified by a public key after the multi-chain verification module receives the message.
Further, after the digital signature verification is performed on the ciphertext, the ciphertext is decrypted, the AND operation is performed on the signal content of each blockchain system, the operation result is encrypted through an elliptic curve and is subjected to digital signature, and then the digital signature is sent to each blockchain system.
The beneficial effects of the invention are as follows:
1) And realizing the synchronization of the multi-chain information in the network delay.
2) The privacy of the block chain verification information in the multi-chain verification process is effectively guaranteed.
3) The method has strong expandability.
Drawings
FIG. 1 is a diagram of a multi-chain data information synchronization processing module architecture of the present invention;
fig. 2 is a diagram of a multi-chain authentication module architecture according to the present invention.
Detailed Description
Referring to fig. 1, in the architecture of the multi-link data information synchronization processing module,
the earliest block: the earliest generated block among all blocks in the blockchain and present on the backbone (the earliest generated block does not necessarily have access to the backbone).
The nearest block: the most recently generated block of the blockchain is the block that is present on the backbone (the most recently generated block is not necessarily accessible to the backbone).
The block to be generated: all blocks in the blockchain will point to the block that is the nearest block.
A touch block: a block of all blocks of a blockchain that is used to specifically record the information of the multi-chain synchronization data is typically pointed to by a block in the main chain.
The specific operation flow of this embodiment is as follows:
the operation of the module needs to interact with an external multi-chain verification module, and when the whole blockchain system receives a request signal for multi-chain data information synchronization, the system triggers the synchronization of the multi-chain data information, namely the multi-chain data information synchronization processing module starts working.
1) When the multi-chain data information synchronous processing module is triggered, the module can obtain the data information to be synchronized, and then the obtained data information is packed into a new block through the consensus mechanism of the block chain system, and the process is consistent with the mode of generating the block by the main chain. The block generated by the module is not generated and is accessed to the main chain, at the moment, the block is used as a 'solitary block' to exist in the blockchain system, and the 'solitary block' is specially marked to identify the candidate block which is a 'touch block'. The generation of this block, like the main chain block, has miners and mining rewards, which are not disclosed in the blockchain system at this time, but rather the information is stored temporarily. Referred to herein as a "delay prize". The whole process of generating the candidate blocks of the 'touch block' does not influence the generation of blocks on the main chain, and the main chain is always in the mining generation block in the process. The generation blocks of the main chain and the generation blocks of the process are isolated and do not affect each other.
2) After the candidate block of the touch block is generated, the signal sent by the multi-chain verification module outside the blockchain system starts to be continuously detected, and once the prepared signal is detected, the nearest block in the current main chain is acquired.
3) After the module obtains the current nearest block, the module finds the previous generated 'touch block' candidate block, and leads the obtained current nearest block to point to the Hash value of the 'touch block' candidate block. At this time, the "touch block" candidate block rises to "touch block".
4) After the 'touch block' is born, the miner and the mining rewards of the block are inquired from the 'touch block', and the miner rewards which are delayed to be issued are immediately sent to the miner, and at the moment, the whole information synchronization process is finished.
The touch block is connected to the main chain as a small branch, so that the whole blockchain system is ensured to be safer, and the information synchronization of the multi-chain system in network delay is realized.
The reason for ensuring that the entire blockchain system is safer is that the traditional blockchain system has only one backbone that is smooth, and the criteria that determines which is the backbone is which branch is longer. By adding the 'touch blocks', the whole blockchain system is more complex, and the number of the touch blocks is also used as a standard for determining the main chain, so that more factors are required to be considered for an attacker, the attack difficulty is greatly increased, and the whole blockchain system is safer.
For information synchronization within network delays, the consensus mechanism of the original multiple blockchain systems may be different, even though the same consensus mechanism is employed, the mining speed of each blockchain system is different. By mining ready blocks in advance, the maximum time difference is not greater than the network delay, by having the current nearest block point to a "touch" candidate block, after each blockchain system is ready for such blocks, almost synchronous at the user level.
From the user's perspective, the user will not feel the processing change of the blockchain bottom layer, and simultaneously, the synchronous uplink of the multi-chain data information is ensured.
Referring to fig. 2, the multi-chain verification module is located outside the blockchain system and is dedicated to assist the multi-chain data information synchronization processing module in the blockchain system.
The specific operation flow of the module is as follows:
after the data information synchronization uplink process begins, each blockchain system will continue to signal whether they are ready. Because each blockchain system only needs to care about the final signal if all are ready, it does not need to know the signals sent by other blockchain systems in the process. In order to achieve the effect, the invention adopts a safe multiparty calculation mode to process signals. Secure multiparty computing is a group of participants that are not trusted with each other, but they wish to compute a contract function with the correct results, while the output data of each participant is kept secret. Secure multiparty computing is thus suitable for use in the authentication module.
Each blockchain system needs to encrypt and digitally sign the signal content using cryptographic algorithms before sending a signal that is ready or not. The aim is to ensure the privacy of each blockchain system signal, and the verification module can verify whether the received signal is sent by the corresponding blockchain system through a digital signature mode.
The cryptographic algorithm employed is an elliptic curve algorithm (ECC). Elliptic curve cryptography is an algorithm for establishing public key encryption and is based on elliptic curve math. In the present invention, the signal encryption process is as follows:
before the block chain system A sends the signal content, the verification module selects an elliptic curve Ep (a, b) in advance, and selects a point on the elliptic curve as a base point G; the system then selects a private key, referred to herein as the privateKey, by which the public key is generated, i.e.,
publicKey＝privateKey_G
the verification module sends the elliptic curve Ep (a, b), the public key publicKey and the base point G to the blockchain system A; after receiving the information, the blockchain system A encodes the signal content to be transmitted to a point M on Ep (a, b) and generates a random integer r; the blockchain system A then calculates C1 and C2 through M and r, wherein C1 and C2 are points on two rectangular coordinate systems calculated according to M and r, namely,
C1＝M+r×publicKey
C2＝r×G
and the block chain system A sends C1 and C2 to a verification module, and the verification module decrypts the received C1 and C2 and the private key to obtain the signal content sent by the block chain system A through decryption of the point M (the point can be obtained through C1 and C2).
Elliptic curve signing (ECDSA) procedure is as follows:
the block chain system A generates a group of public and private key pairs, the real point G=G (x, y) and selects a random number r, and S= (H+Kx/r) is calculated through the message M, the hash H and the private key K; finally, the message M and the signature { rG, S } are sent to a verification module; and after the verification module receives the information, the public key is used for verifying the signature, and if the verification is successful, the sender is indeed the block chain system A.
The module is continuous in signaling of each blockchain system, so that the cryptographically signed signal content ciphertext sent by each blockchain system is processed by multiple threads in the verification module. And after the verification module performs digital signature verification on the ciphertext, decrypting the ciphertext. The signal content of each blockchain system is subjected to an and operation, i.e.,
signal 1 &signal2 & … & signal N
The result is encrypted by elliptic curve and digitally signed and then sent to each blockchain system. The purpose of encryption and digital signature is to prevent an attacker from tampering with the information such that the final signal experienced by each blockchain system is different, resulting in an anomaly in the synchronous transmission of data information.
The verification module ensures the privacy of each blockchain system signal under the multi-chain system by adopting a safe multiparty calculation mode, encrypts and signs the signal content by adopting an elliptic curve cryptography algorithm, and ensures the safety of the signal content in the transmission process.
The blockchain multi-chain data information synchronous processing module is combined with the verification module outside the blockchain, so that the effect of multi-chain data information synchronization can be well achieved, and the blockchain multi-chain data information synchronous processing module can safely interact under the guarantee of the cryptography technology and can be suitable for multi-chain network systems formed by different blockchain systems.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the specific embodiments described above, and that the above specific embodiments and descriptions are provided for further illustration of the principles of the present invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (8)
1. The bottom layer method for synchronizing the information of the block chain multi-chain data is characterized by comprising the following steps:
step S1, a multi-chain data information synchronous processing module acquires data information to be synchronized, and then the data information is packaged in a new block by utilizing a consensus mechanism of a block chain system, and the new block is marked as a candidate block of a touch block by the block chain system;
step S2, after candidate blocks of the 'touch block' are generated, continuously detecting signals sent by a multi-chain verification module outside the block chain system, and acquiring the nearest block in the current main chain when the prepared signals are detected;
step S3, pointing the nearest block in the acquired current main chain to a candidate block of the 'touch block', and rising the candidate block of the 'touch block' to be the 'touch block';
and S4, inquiring synchronous information in the touch block.
2. The method according to claim 1, wherein the "touch block" is a block of all blocks of the local chain that is dedicated to recording the multi-chain synchronization data information.
3. The underlying method of blockchain multi-chain data information synchronization of claim 1, wherein the nearest chunk in the current backbone is the most recently generated chunk of all chunks of the blockchain that exist on the backbone.
4. The method according to claim 1, wherein in the step S3, the nearest block in the current main chain points to the Hash value of the candidate block of the "touch block".
5. The underlying method of claim 1, wherein the verification module sends a final signal for each blockchain system, the final signal being an integrated signal of whether the blockchain system is ready.
6. The method for synchronizing bottom layer of blockchain multi-chain data information according to claim 1, wherein the signals sent by the multi-chain verification module are encrypted and digitally signed by a cryptographic algorithm, the cryptographic algorithm is an elliptic linear algorithm, and the specific encryption process is as follows:
before the regional chain system sends the signal content, the multi-chain verification module presets an elliptic curve Ep (a, b), and selects one point above the elliptic curve Ep as a base point G; the local chain system generates a public key through a private key privateKey, namely publickey=privatekey_g;
the multi-chain verification module sends the elliptic curve Ep (a, b), the public key public Key and the base point G to the blockchain system, after the blockchain system receives the information, the content of the signal to be sent is encoded to a point M on the curve Ep (a, b) and a random integer r is generated, the blockchain system calculates C1 and C2 according to M and r, and the C1 and C2 are points on two rectangular coordinate systems calculated according to M and r, namely,
C1＝M+r×publicKey
C2＝r×G
and sends C1 and C2 to the multiplex authentication module.
7. The underlying method of blockchain multi-chain data information synchronization of claim 6, wherein the elliptic curve signing process is:
the regional chain system generates a group of public and private key pairs, the real point G=G (x, y), a random number r is selected, and S= (H+Kx/r) is calculated through the information M, the hash value H and the private key K; and finally, the message M and the signature { rG, S } are sent to a multi-chain verification module, and the signature is verified by a public key after the multi-chain verification module receives the message.
8. The method according to claim 1, wherein the multi-chain verification module performs digital signature verification on the ciphertext, then decrypts the ciphertext, performs an and operation on the signal content of each blockchain system, encrypts the operation result through an elliptic curve, performs digital signature, and then sends the operation result to each blockchain system.
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| CN109493222A (en) * | 2018-10-18 | 2019-03-19 | 尚维斯 | A kind of method of any number of block chain account book real-time synchronizations |
| CN109522363A (en) * | 2018-10-18 | 2019-03-26 | 上海达家迎信息科技有限公司 | Cloud platform synchronous method, system, equipment and storage medium based on block chain |
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| CN109493222A (en) * | 2018-10-18 | 2019-03-19 | 尚维斯 | A kind of method of any number of block chain account book real-time synchronizations |
| CN109522363A (en) * | 2018-10-18 | 2019-03-26 | 上海达家迎信息科技有限公司 | Cloud platform synchronous method, system, equipment and storage medium based on block chain |
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