CN110738474A - method and system for encrypting digital currency tokens based on SM2 cryptographic algorithm - Google Patents
method and system for encrypting digital currency tokens based on SM2 cryptographic algorithm Download PDFInfo
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Abstract
The invention discloses digital token encryption method and system based on a national secret SM2 algorithm, wherein the digital token is a rights and interests certificate which replaces cash money and has equal-amount purchasing rights, the digital token encryption method comprises a digital token package module which is issued and redeemed by government department , a digital token package module which is applied by enterprises, a digital token package module which is received by a third-party service institution, a block chain ledger based on SM2 domestic cryptography, and a method for trading based on a small-amount multiple payment principle of a one-way channel, wherein each block stores the trading of the digital token, including digital token description information and a digital token identification code, and digital token distributed storage nodes store the block chain ledger of the digital token and the complete original information of the token, are suitable for inquiring, verifying, tracing and preventing falsification, avoid the systematic risk stored by a single centralized institution, can track each trading, are safe, controllable and effective in supervision, and realize the cross currency exchange of trust of the digital token trust region.
Description
The technical field is as follows:
the invention relates to the technical field of block chains, in particular to a method and a system for digital currency tokens encrypted based on a SM2 cryptographic algorithm.
Background art:
the innovation ticket is a 'rights and interests voucher' freely issued to small and medium-sized micro-enterprises or entrepreneurship teams by governments, and is mainly used for reducing scientific and technological research and development costs of the small and medium-sized micro-enterprises, realizing general acceptance and reducing research and development costs.
In order to optimize financial subsidy mode and reduce innovation and creation cost, the government pushes application science and technology innovation ticket (hereinafter referred to as 'innovation ticket') which refers to policy tools for supporting enterprises and teams to buy professional services from service organizations by using government financial science and technology funds.
Professional services refer to services such as strategic planning, technical research and development, technical transfer, inspection and detection, talent culture, resource opening and the like required by enterprises and teams in the technological innovation process.
The government science and technology department is responsible for making policy of the innovation ticket, planning budget, managing and supervising the use of the innovation ticket, the finance and auditing department is responsible for budget management of funds, supervising and checking budget planning and execution conditions of the funds, and the government entrusts a third party organization to carry out daily service and specific management work related to application, use and redemption of the innovation ticket.
However, existing innovative ticket systems may also pose regulatory security risks to the government. Innovation ticket fraud is often a difficult problem for governments, where a rogue may create counterfeit innovation tickets that are wrongly redeemed at the government, or may steal innovation ticket credentials from authentic innovation tickets and use the stolen innovation ticket credentials prior to authorized recipients. In these situations, the government often cannot or cannot exercise the right to pursue with the offender, and the genuine innovation ticket loses value. In addition, the innovation coupon system of the centralized database is usually operated by a third party redeeming innovation coupons at the government, and the innovation coupons are not tracked and cannot be tracked, so that the government does not know the value of the unused innovation coupons, the fund supervision is inconvenient, and the problems of disorder of funds, stealing and the like are easily caused.
The invention content is as follows:
the invention aims to provide digital currency substitution tickets encrypted based on the SM2 national secret algorithm, and a system thereof, which can effectively supervise and check the work requirements of application, use and redemption of innovation tickets, performance evaluation, audit supervision and the like, and realize technical support guarantee based on the principle of small-amount multi-payment of a one-way channel by adopting the digital currency substitution tickets encrypted based on the SM2 national secret algorithm.
The invention is implemented by the following technical proposal that methods of digital currency tokens encrypted based on the SM2 national secret algorithm comprise:
the enterprise legal person logs in the innovation ticket management information platform to submit the contract application innovation ticket on line, and pays the innovation ticket to the service organization on line for purchasing related professional services;
the government confirms the professional service and corresponding service amount in the contract according to the service item list, and draws up the using amount of the innovation ticket according to the service amount;
the service organization receives the innovation ticket on line, fulfills the service contract, submits the innovation ticket material on line and applies for cashing;
the management center is responsible for auditing and cashing, and fund is paid through a government financial bank to realize cross-regional cashing.
A system of digital tokens encrypted based on the SM2 cryptographic algorithm, comprising:
the enterprise digital token and ticket pack module is used for applying, using and managing the token and ticket by enterprises;
government digital token package module for government issuing and managing enterprise's token and redeeming modern token for service organization;
the service organization digital token pack module is used for receiving, applying for cashing and managing the token by the service organization;
the enterprise digital token package module, the government digital token package module and the service organization digital token package module form a block chain account book and a digital token distributed storage node based on SM2 domestic cryptographic technology, wherein:
each block of the block chain account book based on SM2 domestic cryptographic technology stores the transaction of the digital currency, including the description information and the identification code of the digital currency;
the digital token distributed storage node comprises nodes, and stores a digital token block chain ledger and complete original information of the tokens.
, the government digital token package module comprising:
a newly added token module, in which the government adds a new token according to the financial fund and sends the digital token to a digital token block chain account book;
the module for issuing the token, the government department checks the contract submitted by the enterprise and issues the token to the enterprise;
managing the currency note module, the government makes contract inquiry, enterprise analysis and behavior supervision on the digital currency note block chain account book;
redemption the digital voucher for the service organization, the government verifies and redeems the digital voucher.
, the enterprise digital token package module comprising:
applying for a token module, wherein the enterprise submits a contract signed with a service organization on line and applies for a digital token to a government ;
using the token module, the enterprise purchases services of the service organization and pays the digital token;
and the management token module is used for inquiring own data in the digital token block chain account book by enterprises.
, the service digital token package module comprising:
a money ticket receiving and replacing module, wherein the service organization provides service for enterprises and receives digital money tickets;
apply for redemption of a modern currency note module, the service organization submits an application for redemption of an innovation note to government ;
and the management token module is used for inquiring own data in the digital token block chain account book by a service mechanism.
Further , the blockchain account book is encrypted based on SM2 domestic cryptographic technology and is transacted based on the principle of one-way channel small multiple payments.
Further , the SM2 domestic cryptographic technique includes:
government A generates its own SM2 public-private key Pair (PK) using a key generation algorithm in the SM2 cryptographic algorithmA,SKA) Wallet address of government A is PKA；
Company B generates its own SM2 public-private key Pair (PK) using a key generation algorithm in the SM2 cryptographic algorithmB,SKB) The wallet address of company B is PKB；
Wallet PKAWallet PKBCan be independently signed by government and company to be self-paid.
Further , the SM2 domestic cryptographic technique comprises that government A and company B jointly generate their common SM2 public key PK by using public key and private key share generation algorithm in 2-2 limited SM2 cryptographic algorithmABPart of private key of government A is SKAB_APart of private key of company B is SKAB_BThe address of the wallet shared by government A and company B is PKABThe wallet can only be spent if government a signs with company B.
The invention has the advantages that:
the invention can effectively supervise and check the application, use and payment of innovation tickets, carry out performance evaluation, audit and supervision and other work requirements, adopts the method and the system of the digital currency ticket encrypted based on the SM2 algorithm, is suitable for inquiry, retrieval, verification, tracing and tamper prevention based on the principle of small-amount multiple payment of a one-way channel, avoids systematic risks stored by a single centralized organization, realizes trust and circulation of the digital currency ticket among governments, enterprises and service organizations, is safe and controllable, optimizes a financial subsidy mode, and reduces innovation and entrepreneursion cost.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a system architecture diagram of a digital token system encrypted based on the cryptographic SM2 algorithm according to an exemplary embodiment of the inventive concept;
fig. 2 is a business flow diagram of a digital token system encrypted based on the secret SM2 algorithm according to an exemplary embodiment of the inventive concept;
fig. 3 is a block diagram of a digital token system encrypted based on the secret SM2 algorithm according to an exemplary embodiment of the inventive concept.
Fig. 4 is an encryption business flow diagram of a digital token system encrypted based on a cryptographic SM2 algorithm according to an exemplary embodiment of the inventive concept.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only partial embodiments of of the present invention, rather than all embodiments.
As shown in fig. 1-4, the present invention provides methods for encrypting digital currency tokens based on the SM2 cryptographic algorithm, comprising:
the enterprise legal person logs in the innovation ticket management information platform to submit the contract application innovation ticket on line, and pays the innovation ticket to the service organization on line for purchasing related professional services;
the government confirms the professional service and corresponding service amount in the contract according to the service item list, and draws up the using amount of the innovation ticket according to the service amount;
the service organization receives the innovation ticket on line, fulfills the service contract, submits the innovation ticket material on line and applies for cashing;
the management center is responsible for auditing and cashing, and fund is paid through a government financial bank to realize cross-regional cashing.
The invention also provides kinds of digital currency voucher system based on SM2 algorithm encryption, which comprises:
the enterprise digital token and ticket pack module is used for applying, using and managing the token and ticket by enterprises;
government digital token package module for government issuing and managing enterprise's token and redeeming modern token for service organization;
the service organization digital token pack module is used for receiving, applying for cashing and managing the token by the service organization;
the enterprise digital token package module, the government digital token package module and the service organization digital token package module form a block chain account book and a digital token distributed storage node based on SM2 domestic cryptographic technology, wherein each block of the block chain account book based on SM2 domestic cryptographic technology stores the transaction of the digital token, including the description information of the digital token and the identification code of the digital token, and the digital token distributed storage node comprises a node which stores the block chain account book of the digital token and the complete original information of the token, is suitable for inquiry, verification, tracing and tamper prevention, avoids the systematic risk stored by a single centralized organization, realizes the trust circulation of the digital token among governments, enterprises and service organizations, is safe and controllable, optimizes the financial subsidy mode, and reduces the innovation and creation cost.
Wherein the government digital token package module comprises:
a newly added token module, in which the government adds a new token according to the financial fund and sends the digital token to a digital token block chain account book;
the module for issuing the token, the government department checks the contract submitted by the enterprise and issues the token to the enterprise;
managing the currency note module, the government makes contract inquiry, enterprise analysis and behavior supervision on the digital currency note block chain account book;
redemption the digital voucher for the service organization, the government verifies and redeems the digital voucher.
Wherein, enterprise digital token and ticket package module includes:
applying for a token module, wherein the enterprise submits a contract signed with a service organization on line and applies for a digital token to a government ;
using the token module, the enterprise purchases services of the service organization and pays the digital token;
and the management token module is used for inquiring own data in the digital token block chain account book by enterprises.
Wherein, service organization digital token package module includes:
a money ticket receiving and replacing module, wherein the service organization provides service for enterprises and receives digital money tickets;
apply for redemption of a modern currency note module, the service organization submits an application for redemption of an innovation note to government ;
and the management token module is used for inquiring own data in the digital token block chain account book by a service mechanism.
The blockchain ledger is encrypted based on SM2 domestic cryptographic technology, and conducts transaction based on the principle of one-way channel small-amount multiple payment. The SM2 domestic cryptographic technique comprises:
1. government A generates its own SM2 public-private key Pair (PK) using a key generation algorithm in the SM2 cryptographic algorithmA,SKA) Wallet address of government A is PKA；
2. Company B generates its own SM2 public-private key Pair (PK) using a key generation algorithm in the SM2 cryptographic algorithmB,SKB) The wallet address of company B is PKB。
Wallet PKAWallet PKBCan be independently signed by government and company to be self-paid.
3. The government A and the company B jointly generate a public key PK of SM2 common to the government A and the company B by using a public key and private key share generation algorithm in a 2-2 limited SM2 encryption algorithmABPart of private key of government A is SKAB_APart of private key of company B is SKAB_BThe address of the wallet shared by government A and company B is PKABThe wallet can only be spent if government a signs with company B.
The encryption algorithm of the national secret SM2 and the encryption algorithm of the 2-2 limited SM2 are respectively as follows:
algorithm 1. national secret SM2 encryption algorithm
1. The key generation algorithm: inputting security parameters to generate public and private key pair
a. valid Fq (q ═ p and p is a prime number greater than 3, or q ═ 2 are selectedm) A set of upper elliptic curve system parameters.
b. Generating an integer d ∈ [1, n-2] with a random number generator;
c.G is a base point, and the calculated point P is (x)P,yP)＝[d]G；
d. Then d is the private key and P is the public key
2. Signature algorithm: a uses its own private key dAFor message m, a signature (r, s) is generated
a. Note ZA＝H256(ENTLA||IDA||a||b||xG||yG||xA||yA)
b. Setting M ═ ZA||m；
c. Calculating e-SM 3 (M);
d. generating a random number k ∈ [1, n-1] by using a random number generator;
e. calculating the point (x) of the elliptic curve1,y1)＝[k]G；
f. Calculating r ═ e + x1) modn, if r is 0 or r + k is n, return d;
g. calculate s ═ ((1+ dA)-1·(k-r·dA) Mod n, if s is 0, return d;
h. the signature of the message m is (r, s).
3. And (3) verification algorithm: using the public key P of AAThe received message m ' and its digital signature (r ', s ') are checked for legitimacy.
a. Checking whether r 'belongs to [1, n-1] or not, and if not, verifying that the r' does not pass;
b. checking whether s' belongs to [1, n-1] or not, and if not, verifying not to pass;
c. setting M' ═ ZA||m’；
d. Calculation of e '═ SM3 (M')
e. Calculating t ═ r '+ s') modn, and if t ═ 0, then the verification fails;
f. calculating the point (x) of the elliptic curve1’,y1’)＝[s’]G+[t]PA；
g. Calculating R ═ (e' + x1') modn, checking whether R ═ R' is true, and if true, verifying to pass; otherwise, the verification is not passed.
1. Public key and private key share generation algorithm:
a.D1∈[1,n-1]
b.D2∈[1,n-1]
c.P1＝D1-1[*]G
d.P＝D2-1[*]P1[-]G＝D2-1(D1-1[*]G)[-]G＝(D2-1D1-1-1)[*]G
e. d1 is the private key A, D2 is the private key B, and P is the public key
2, Limit signature Algorithm:
a. setting M ═ ZA| m, calculate e ═ Hash (M)
b.A generates random number k1 ∈ [1, n-1], calculates Q1 ═ k1[ ] G
c.B generates random numbers k2 ∈ [1, n-1], k3 ∈ [1, n-1], calculates Q2 ═ k2[ ] G
Calculating (x1, y1) ═ k3 [. multidot.Q 1[ + ] Q2 [. multidot.k 3. multidot.k 1 [. multidot.G [ (k 3. multidot.k 1+ k2) [ ] G [ ]
Calculating r ═ e + x1) modn
d.B calculates S2 ═ D2 ═ k3mod n, S3 ═ D2 ═ r + k2) mod n
e.A calculation
s＝(D1*k1)*s2+D1*s3-r＝Dl·k1·D2·k3+Dl·D2(r+k2)-r＝D1·D2(k1
·k3+k2)-r+Dl·D2·r
f. The signature of the message m is (r, s)
3. Signature verification algorithm:
a. checking whether r is formed by [1, n-1], if not, verifying that the r is not passed
b. Checking whether s is formed by [1, n-1], if not, verifying that the s is not passed
c. Setting M ═ ZA| m, calculate e ═ Hash (M)
d. Calculating t ═ r '+ s') modn, and if t ═ 0, then the verification fails;
e. calculating the point (x) of the elliptic curve1’,y1’)＝[s’]G+[t]PA；
f. Calculating R ═ (e' + x1') modn, checking whether R ═ R' is true, and if true, verifying to pass; otherwise, the verification is not passed.
The specific example is given below to illustrate the method of the SM2 domestic cryptographic technique of the present invention for conducting transactions using the principle of micropayment over a one-way channel:
1. government A creates transactions from A's wallet address PKAPayment X ten thousand yuan to wallet address PK shared by A and BAB. This transaction is referred to as a guarantee transaction. At this point, the guaranteed transaction is not written to the blockchain for the time being.
2. Government A creates a transaction from wallet address PK common to both A and BABWallet address PK for paying X ten thousand yuan to AAAnd marks the transaction as valid after Y years. This transaction is referred to as an initial return transaction. A uses its own partial private key SKAB_AFor the initial returnThe transaction uses a partial signature algorithm in a 2-2 limited SM2 signature algorithm to carry out partial signature, the transaction and the partial signature of A are sent to B.B to verify that the transaction content is legal, and then the SK is used for partial private key of the SKAB_BThe initial return transaction is partially signed using a partial signature algorithm from the 2-2 limited SM2 signature algorithm and its own partial signature is sent to A.A to write the initial return transaction and the partial signatures of a and B into the blockchain.
3. Private key SK for government AAThe guaranteed transaction is signed using a signature algorithm in the SM2 signature algorithm and written with the signature into the blockchain.
4. During the project execution period, when company B needs to spend project amount XiIn ten thousand yuan (i is 1, …), B submits evidence of spending (corresponding bills and proof materials such as invoices) to A, and A generates transactions T after verifying the evidence is legali，TiWallet address PK common to both A and BABPayment X1+…+XiWallet address PK for giving ten thousand yuan to BBPay X-X1-…-XiWallet address PK for ten thousand yuan to AA. A uses its own partial private key SKAB_ATo transaction TiPerforming partial signature by using partial signature algorithm in 2-2 limited SM2 signature algorithm, and performing partial signature on TiThe partial signature with a is sent to B.
5. When company B determines that there is no subsequent cost, or has reached the project execution period, the last transactions sent by Note A to B are TeB uses its own partial private key SKAB_BTo TePerforming partial signature by using partial signature algorithm in 2-2 limited SM2 signature algorithm, and performing partial signature on TeAnd partial signature write block chains for a and B.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1, A method for encrypting digital currency bills based on SM2 cryptographic algorithm, which is characterized by comprising the following steps:
the enterprise legal person logs in the innovation ticket management information platform to submit the contract application innovation ticket on line, and pays the innovation ticket to the service organization on line for purchasing related professional services;
the government confirms the professional service and corresponding service amount in the contract according to the service item list, and draws up the using amount of the innovation ticket according to the service amount;
the service organization receives the innovation ticket on line, fulfills the service contract, submits the innovation ticket material on line and applies for cashing;
the management center is responsible for auditing and cashing, and fund is paid through a government financial bank to realize cross-regional cashing.
2. The system of kinds of digital vouchers encrypted based on the SM2 cryptographic algorithm, as claimed in claim 1, comprising:
the enterprise digital token and ticket pack module is used for applying, using and managing the token and ticket by enterprises;
government digital token package module for government issuing and managing enterprise's token and redeeming modern token for service organization;
the service organization digital token pack module is used for receiving, applying for cashing and managing the token by the service organization;
the enterprise digital token package module, the government digital token package module and the service organization digital token package module form a block chain account book and a digital token distributed storage node based on SM2 domestic cryptographic technology, wherein:
each block of the block chain account book based on SM2 domestic cryptographic technology stores the transaction of the digital currency, including the description information and the identification code of the digital currency;
the digital token distributed storage node comprises nodes, and stores a digital token block chain ledger and complete original information of the tokens.
3. The system of digital tokens encrypted based on the SM2 national password algorithm, in accordance with claim 2, wherein the government digital token package module comprises:
a newly added token module, in which the government adds a new token according to the financial fund and sends the digital token to a digital token block chain account book;
the module for issuing the token, the government department checks the contract submitted by the enterprise and issues the token to the enterprise;
managing the currency note module, the government makes contract inquiry, enterprise analysis and behavior supervision on the digital currency note block chain account book;
redemption the digital voucher for the service organization, the government verifies and redeems the digital voucher.
4. The system of digital tokens encrypted based on the SM2 algorithm of claim 2, wherein the enterprise digital token package module comprises:
applying for a token module, wherein the enterprise submits a contract signed with a service organization on line and applies for a digital token to a government ;
using the token module, the enterprise purchases services of the service organization and pays the digital token;
and the management token module is used for inquiring own data in the digital token block chain account book by enterprises.
5. The system of digital tokens encrypted based on the SM2 cryptographic algorithm of claim 2, wherein the service digital token package module comprises:
a money ticket receiving and replacing module, wherein the service organization provides service for enterprises and receives digital money tickets;
apply for redemption of a modern currency note module, the service organization submits an application for redemption of an innovation note to government ;
and the management token module is used for inquiring own data in the digital token block chain account book by a service mechanism.
6. The system of digital vouchers encrypted based on the SM2 national cipher algorithm, wherein the blockchain ledger is encrypted based on the SM2 domestic cipher technology, and transacts based on the principle of one-way channel small multiple payments.
7. The system of digital currency notes encrypted according to the SM2 national password technology, according to claim 6, wherein the SM2 national password technology comprises:
government A generates its own SM2 public-private key Pair (PK) using a key generation algorithm in the SM2 cryptographic algorithmA,SKA) Wallet address of government A is PKA；
Company B generates its own SM2 public-private key Pair (PK) using a key generation algorithm in the SM2 cryptographic algorithmB,SKB) The wallet address of company B is PKB；
Wallet PKAWallet PKBCan be independently signed by government and company to be self-paid.
8. The system of digital currency notes encrypted according to the SM2 national password, in accordance with claim 6, wherein the SM2 national cryptography includes government A and company B jointly generating their common SM2 public PK by using public and private key share generation algorithms of the 2-2 Limited SM2 encryption algorithmABPart of private key of government A is SKAB_APart of private key of company B is SKAB_BThe address of the wallet shared by government A and company B is PKABThe wallet can only be spent if government a signs with company B.
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| CN112150150A (en) * | 2020-09-30 | 2020-12-29 | 重庆市科学技术研究院 | Block chain-based electronic ticket transaction system and method |
| CN112150160A (en) * | 2020-09-30 | 2020-12-29 | 重庆市科学技术研究院 | Electronic ticket transaction suggestion generation method and system |
| CN112150161A (en) * | 2020-09-30 | 2020-12-29 | 重庆市科学技术研究院 | Electronic ticket transaction risk management and control system and method |
| CN112419021A (en) * | 2020-10-21 | 2021-02-26 | 西安电子科技大学 | Electronic invoice verification method, system, storage medium, computer equipment and terminal |
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| CN112150150B (en) * | 2020-09-30 | 2023-08-08 | 重庆市科学技术研究院 | Electronic ticket transaction system and method based on blockchain |
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