CN112019345A - System and method for high-precision time block chain - Google Patents
System and method for high-precision time block chain Download PDFInfo
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- CN112019345A CN112019345A CN202010794734.7A CN202010794734A CN112019345A CN 112019345 A CN112019345 A CN 112019345A CN 202010794734 A CN202010794734 A CN 202010794734A CN 112019345 A CN112019345 A CN 112019345A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3263—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements
- H04L9/3268—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements using certificate validation, registration, distribution or revocation, e.g. certificate revocation list [CRL]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
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Abstract
The invention discloses a system and a method for a high-precision time block chain, wherein the system comprises a group of block chain nodes, each block chain node comprises a block chain node computer, a time service antenna and a time service system, and the time service system comprises a time service module and a core private key; the method comprises the following steps: s101, acquiring time service information; s102, adding a second block chain according to the original first block chain, and repacking the blocks of the first block chain, the corresponding time service information and the corresponding time service system signature, wherein the second block chain comprises the following steps: s201, obtaining a hash value of a previous block; s202, fixing transaction data and other data to be packaged; s203, requesting the time service system to provide time service information and a time service system signature; s204, the hash value of the block packed and calculated is provided for the next block.
Description
Technical Field
The invention relates to a block chain and a cryptographic technology, in particular to a system and a method for a high-precision time block chain.
Background
The traditional time service system adopts a scheme that a satellite clock server is connected with a satellite through a satellite time service antenna, and the other end of the satellite clock server is connected with terminal equipment through a network switch. The time standard adopted by the traditional block chain scheme is network time or time of a machine, the accuracy is not high, the delay is uncertain, and the requirement for processing the high-accuracy time-related problem cannot be met; and the time is directly read, a trust mechanism is lacked, and the time cannot be guaranteed to be real.
Disclosure of Invention
In order to solve the defects of the prior art and meet the requirements of high-precision time and high reliability, the invention adopts the following technical scheme:
a high-precision time block chain system comprises a group of block chain nodes, wherein each block chain node comprises a block chain node computer, a time service antenna and a time service system, the time service system comprises a time service module and a core private key, the time service module acquires time service information through the time service antenna, the core private key is used for signing the time service information and the block information according to the requirement of the block chain node computer to obtain a signature of the time service system, and the block chain node computer packages the time service information and the signature of the time service system which are obtained by processing of the time service module and the corresponding blocks. Time service information is added into the blocks, so that the same blocks have different timestamps at different acquisition points, a central analysis system analyzes and processes each block chain, the method is suitable for systems with wide geographical range distribution, the blocks have time service system signatures, and the accuracy and the non-falsification of data are ensured.
The block information comprises a system code of the time service system, the system code is used for storing identification information of the time service system, and the system code is also signed through a core private key, so that the accuracy and the non-falsification of data are improved.
The time service system comprises a built-in root certificate, and a public key of the root certificate is used for verifying the signature of the block.
The time service system comprises a built-in self-signature root certificate, and a public key of the self-signature root certificate is used for verifying the signature of the block. Without the aid of a third party certification authority.
A method for high-precision time block chaining comprises the following steps:
s101, acquiring time service information;
s102, adding a second block chain according to the original first block chain, wherein the second block chain is formed by combining and repacking the blocks of the first block chain with the corresponding time service information and the time service system signature, the time service system signature is the signature of a core private key of a time service system on the time service information and the block information according to the requirement of a block chain node computer, the accuracy is ensured through the signature, the application flexibility is increased through the two parallel block chains, and the second block chain is formed by the following steps:
s201, obtaining a hash value of a previous block;
s202, fixing transaction data and other data to be packaged, wherein the fixation is to freeze the data so as to obtain time corresponding to the data;
s203, requesting the time service system to provide time service information and a time service system signature; to ensure a high degree of confidence in the transaction data and other data at a particular time;
s204, the hash value of the block packed and calculated is provided for the next block.
The time service system signs the time service information to obtain a time service system signature, and the binding of the local block data and the time service information is completed by combining and packing the time service system signature, the local block data and the time service information, so that the accuracy and the reliability of time are improved, the method can be used for processing of Internet of things signal acquisition, high-precision mapping, high-precision transaction and the like under a super-large scale, and is suitable for systems with wider geographical range, such as data acquisition systems distributed all over the world.
Further, the second block chain is a clock block chain, the hash value of the block of the first block chain is combined with the corresponding time service information and signature, the signature of the time service system is a signature of the time service information and the block information by a core private key of the time service system, and the clock block chain is formed by the following specific steps:
s301, obtaining a hash value of the block calculated by the first block chain;
s302, fixing the hash value of the local area, the time service information provided by the time service system and the signature of the time service system;
s303, the block chain node computer packs and calculates the hash value of the current clock block, and provides the hash value to the content data of the next block in the first block chain.
Further, the second block chain is a clock block chain, the hash value of the block of the first block chain, the corresponding time service information and time service system signature, and the hash value of the previous clock block are combined and then packaged, the time service system signature is a signature of the time service information and block information by a core private key of the time service system, and the clock block chain is formed by the specific steps as follows:
s401, obtaining a hash value of the block calculated by the first block chain;
s402, obtaining a hash value of a previous clock block;
s403, fixing the local block hash value, the previous clock block hash value, the time service information provided by the time service system and the signature of the time service system;
s404, the block chain node computer packs and calculates the hash value of the clock block and provides the hash value to the next clock block.
The clocks added with the clock hash are independently chained, so that the used scene can be expanded.
The block information comprises a system code of the time service system, and the system code is used for storing identification information of the time service system. The system code is also signed by the core private key, so that the accuracy and the non-falsification of the data are improved
The time service system also comprises a built-in root certificate, and a public key of the root certificate is used for verifying the signature of the time service system of the block.
The time service system also comprises a built-in self-signature root certificate, and a public key of the self-signature root certificate is used for verifying the signature of the block. Without the aid of a third party certification authority.
The invention has the advantages and beneficial effects that:
the high-precision time service information acquired by the time service system is combined with the block chain system, the credibility of data is ensured by adopting a signature mechanism, and the high-precision global clock system is formed by embedding the time service time in the block chain, so that the precision of the time system is improved, and various application scenes needing high-precision time are met.
Drawings
FIG. 1 is a diagram of a timing system and a block link point computer according to the present invention.
FIG. 2 is a block diagram of the ultra-large geographic area information acquisition system of the present invention.
FIG. 3 is a block chain diagram of the present invention with the addition of a second chain.
Fig. 4 is a schematic diagram of the second chain being a clock chain in the present invention.
FIG. 5 is a diagram illustrating adding a hash value of a previous clock chain block to a clock chain block according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 and 2, a high-precision time block chain system includes a group of block chain nodes matched with an acquisition point and a central analysis system, and is characterized in that the block chain nodes include a block chain node computer, a time service antenna and a time service system, the time service system includes a time service module, a core private key, a system code, a built-in (prefabricated) root certificate or a self-signed root certificate, the time service module obtains a system time service, i.e. high-precision time, through the time service antenna, the core private key is used for signing or encrypting the high-precision time, the system code and other information according to the requirement of the block chain node computer to obtain a signature of the time service system, the high-precision time, the signature of the time service system, which are obtained by the processing of the block chain node computer time service module, and the corresponding blocks are packaged together to complete the block generation work, so that in different places, the same blocks have different timestamps, the central analysis system analyzes and processes each block chain, and verifies or decrypts the signature through the public key of the root certificate or the self-signed root certificate, so that the time service information is verified or decrypted, the sequence of the blocks is distinguished according to the time service information for subsequent detailed analysis, and other information comprises information of other blocks. The system is applicable to a wide geographical range, such as data acquisition systems of parts all over the world.
The time service system is provided with a system code ID and a core private key, so that generated time service information cannot be falsified.
The time service system and the block chain node computer adopt reliable real-time connection, and data transmission between the connection ensures that the time delay cannot be changed due to any other factors. For example, the RS232 mode, the GPI/O mode, the hardware address mapping, the dedicated USB interface, the dedicated network interface, or the time service system as the internal component of the blockchain node computer is directly integrated into the blockchain computer in the PCI, PCIe, or other modes.
The external time service antenna is used for receiving satellite signals such as GPS or Beidou.
And the antenna feeder is used for connecting the antenna and the time service system and transmitting signals.
The time service module is used for analyzing satellite signals to obtain accurate time service, can acquire high-precision time by adopting a time service function of a GPS (global positioning system) or a Beidou positioning system, can also adopt time service functions of various positioning systems such as an atomic clock and the like as time service sources, and ensures the accuracy and the non-tamper property of data by combining a core private key, system codes and other information needing signature.
The core private key is a built-in non-disclosure system private key of the time service system, is protected and cannot be accessed by the outside, and is used for carrying out encryption coding on data and confirming non-repudiation and non-tampering of a data source.
And the system code is used for storing the identification information of the time service system and carrying out coding, packaging and other processing by combining the core private key and the information transmitted by the block chain node computer.
As shown in fig. 3-5, a high-precision time block chaining method adds a timestamp relationship to an original block connection relationship, and forms a second connection relationship by using a time sequence. The method for providing the block chain with the capability of high-precision time record by combining the high-precision time and the global property of a GPS or Beidou positioning system with the non-repudiation and the non-tampering of a private key signature technology comprises the following steps:
firstly, a time service system acquires high-precision time from an acquisition point;
secondly, adding a second block chain according to the original first block chain, wherein the second block chain is formed by combining and packing blocks of the first block chain with corresponding high-precision time and signatures of a time service system, the time service system comprises a time service module, a core private key, system codes, a built-in (prefabricated) root certificate or a self-signed root certificate, the core private key signs or encrypts the high-precision time, the system codes and other required information to obtain the signatures of the time service system, the accuracy is ensured by the signatures, and the application flexibility is increased by the two parallel block chains;
the first block chain is formed by the following steps:
1. obtaining the hash value of the previous block chain;
2. fixing the transaction data and other data to be packed, and calculating the local hash value to be provided for the next block.
The second block chain is formed by the following specific steps:
1. obtaining the hash value of the previous block;
2. fixing transaction data and other data which need to be packaged, wherein the fixation is to freeze the data so as to obtain the time corresponding to the data;
3. the request time service system provides high-precision time and signature information, and mainly signs the time information and the data source identity information so as to ensure high credibility of transaction data and other data at specific time;
4. and packing and calculating the hash value of the block and providing the hash value of the block for the next block.
The block data and the high-precision time are bound in a signing mode through a secret key of the time service system, so that the accuracy and the reliability of the time are improved, and the method can be used for processing of internet of things signal acquisition, high-precision mapping, high-precision transaction and the like under a super-large scale.
Further, the second block chain is a clock block chain, the combination of the hash value of the block of the first block chain and the corresponding high-precision time and the signature of the time service system is repackaged, and the clock block chain is formed by the following specific steps:
1. obtaining the hash value of the block calculated by the first block chain;
2. fixing the hash value of the local area, and high-precision time and signature information provided by a time service system;
3. and packaging and calculating the clock block hash value and providing the clock block hash value for the content data of the next block of the first block chain, wherein the content data of each block of the first block chain comprises transaction data and other data.
Furthermore, the hash value of the block before the clock chain is added to the clock block, and the specific steps of forming the clock block chain are as follows:
1. obtaining the hash value of the block calculated by the first block chain;
2. obtaining a hash value of a previous clock block;
3. fixing the hash value of the local block, the hash value of the previous clock block, and high-precision time and signature information provided by a time service system;
4. the present clock block hash value is packed and calculated and provided to the next clock block.
Clocks added with clock hash are independently chained, so that the used scene can be expanded;
and thirdly, analyzing and processing each block chain by the central analysis system, verifying or decrypting the signature on the block chain by the public key of the root certificate so as to verify or decrypt the time service information, and distinguishing the block sequence according to the time service information for detailed time sharing. Can be used for a wide range of systems, such as data acquisition systems of parts of the world.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A high-precision time block chain system comprises a group of block chain nodes and is characterized in that the block chain node points comprise a block chain node computer, a time service antenna and a time service system, the time service system comprises a time service module and a core private key, the time service module obtains time service information through the time service antenna, the core private key is used for signing the time service information and the block information according to the requirement of the block chain node computer to obtain a signature of the time service system, and the block chain node point computer packages the time service information and the signature of the time service system which are obtained by processing the time service module and corresponding blocks.
2. A high precision time block chaining system as in claim 1, wherein said block information includes system code of time service system, system code is used to store identification information of time service system.
3. A high precision time block chaining system as claimed in claim 1, wherein said time service system includes a built-in root certificate, the public key of the root certificate is used to verify the signature of the block.
4. A high precision time block chain system as claimed in claim 1, wherein the time service system includes a built-in self-signed root certificate, and a public key of the self-signed root certificate is used to verify the signature of the block.
5. A method for high-precision time blockchains, characterized by comprising the steps of:
s101, acquiring time service information;
s102, adding a second block chain according to the original first block chain, wherein the second block chain is formed by combining and repacking the blocks of the first block chain with the corresponding time service information and the time service system signature, the time service system signature is the signature of a core private key of a time service system on the time service information and the block information according to the requirement of a block chain node computer, and the second block chain is formed by the following steps:
s201, obtaining a hash value of a previous block;
s202, fixing transaction data and other data to be packaged;
s203, requesting the time service system to provide time service information and a time service system signature;
s204, the block hash value is packaged and calculated and provided for the next block.
6. The method according to claim 5, wherein the second blockchain is a clock blockchain, the combination of the hash value of the local block of the first blockchain and the corresponding time service information and signature is repackaged, the signature of the time service system is a signature of the time service information and the block information by a core private key of the time service system, and the clock blockchain is formed by the specific steps of:
s301, obtaining a hash value of the block calculated by the first block chain;
s302, fixing the hash value of the local area, the time service information provided by the time service system and the signature of the time service system;
s303, the block chain node computer packs and calculates the hash value of the current clock block, and provides the hash value to the content data of the next block in the first block chain.
7. The method according to claim 5, wherein the second blockchain is a clock blockchain, and the hash value of the local blockchain of the first blockchain is combined with the corresponding time service information and time service system signature, and the hash value of the previous clock blockchain, and then packed, and the time service system signature is a signature of the time service information and blockchain by a core private key of the time service system, and the clock blockchain is formed by the following specific steps:
s401, obtaining a hash value of the block calculated by the first block chain;
s402, obtaining a hash value of a previous clock block;
s403, fixing the local block hash value, the previous clock block hash value, the time service information provided by the time service system and the signature of the time service system;
s404, the block chain node computer packs and calculates the hash value of the clock block and provides the hash value to the next clock block.
8. A method for high precision time blockchain according to one of claims 5 to 7, wherein the block information includes systematic codes of time service systems, and the systematic codes are used for storing identification information of the time service systems.
9. A high accuracy time block chaining method according to any of claims 5-7, characterized in that said time service system further comprises a built-in root certificate, the public key of which is used to verify the time service system signature of the block.
10. A high precision time blockchain method according to one of the claims 5 to 7, characterized in that the time service system further comprises a built-in self-signed root certificate, the public key of which is used to verify the signature of the block.
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| WO2024066390A1 (en) * | 2022-09-27 | 2024-04-04 | 中兴通讯股份有限公司 | Network time synchronization method and system, and electronic device and storage medium |
| CN118410527A (en) * | 2024-05-23 | 2024-07-30 | 南京乾恩软件有限公司 | Time tracing encryption time service card |
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