CN102891898A - Network bid inviting and bidding system based on cloud storage - Google Patents
Network bid inviting and bidding system based on cloud storage Download PDFInfo
- Publication number
- CN102891898A CN102891898A CN2012104357625A CN201210435762A CN102891898A CN 102891898 A CN102891898 A CN 102891898A CN 2012104357625 A CN2012104357625 A CN 2012104357625A CN 201210435762 A CN201210435762 A CN 201210435762A CN 102891898 A CN102891898 A CN 102891898A
- Authority
- CN
- China
- Prior art keywords
- tenderer
- module
- clouds
- tender documents
- bidding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention relates to a network bid inviting and bidding system based on cloud storage, wherein the system comprises a server terminal and a client, the client comprises a bidding client and a bid inviting client which are respectively installed at a bidding party local and a bid inviting party local, the bidding party and the bid inviting party respectively log in the system through clients installed at local, a bidding party notification inquiry module and a bidding file encryption module are allocated at the bidding client, a bid inviting party notification issuing module and a bidding file decryption module are allocated at the bid inviting client, a cloud terminal file storing and retrieving module is allocated at the server terminal, the cloud terminal file storing and retrieving module respectively communicates with the bid inviting party notification issuing module, the bidding file decryption module, the bidding party notification inquiry module and the bidding file encryption module through the internet. According to the invention, the cloud storage technology is used for conveniently and effectively storing and managing the bidding file to simultaneously guarantee the safety and confidentiality of the bidding file and provides a safe and effective bidding file retrieval function.
Description
Technical field
The present invention relates to a kind of Internet Bidding system, relate in particular to a kind of in the ciphertext environment Internet Bidding system of retrieval tender documents.
Background technology
In market economy flourish today, bid occupies irreplaceable status as a kind of mode of doing business of Block trade in numerous modes of doing business.Along with the development of cloud memory technology, increasing enterprise tends to utilize the cloud memory technology that the huge tender documents of quantity are carried out store and management.The cloud storage is in the conceptive extension of cloud computing and a development new concept out, refer to by functions such as cluster application, grid or distributed file systems, a large amount of various dissimilar memory devices in the network are gathered collaborative work by application software, the common system that data storage and Operational Visit function externally are provided is a cloud computing system take the data store and management as core.
Yet thing followed safety problem is also threatening the safety of tender documents, and enterprise is hung back to use cloud memory technology when bid.Because the cloud memory technology deposits in tender documents in the untrusted environment, by insincere cloud service provider management tender documents, fail safe and the confidentiality of tender documents have been brought serious threat.If can adopting safely and efficiently, encryption technology was encrypted it before tender documents are uploaded to high in the clouds, can well ensure fail safe and the confidentiality of tender documents, no matter be that eavesdropping opponent or incredible cloud storage provider all can not be stolen tender documents information.But tender documents are encrypted in and ensure that but retrieval had brought stern challenge to tender documents when it was safe.In the face of the magnanimity tender documents, if retrieval technique is not provided, obviously can not satisfy tenderer's demand.At present, a kind of simple method is that tender documents all are downloaded to this locality, carries out the plaintext retrieval after the deciphering, and still, this method will increase the Internet Transmission load greatly.
Owing to can not properly settle the problems referred to above, present existing Internet Bidding system does not all use the cloud memory technology that tender documents are carried out effective store and management.
Summary of the invention
The objective of the invention is the defective that when using the cloud memory technology, exists for existing Tender System, proposes a kind of Internet Bidding system that stores based on cloud.By using safely and efficiently encipherment scheme and the effectively searchable public key cryptography of keyword, when ensureing tender documents safety, solved the document retrieval problem under the ciphertext environment, make the cloud memory technology can serve the Internet Bidding system.This system can provide the bid transaction platform for tenderer and tenderer.
The objective of the invention is to be achieved through the following technical solutions.
A kind of Internet Bidding system based on the cloud storage comprises server end and client.Wherein, client comprises bid client and bid client, is installed in respectively tenderer, tenderer this locality.Tenderer, tenderer are respectively by being installed in local client login system.
There is the tenderer to announce enquiry module and tender documents encrypting module in the bid client configuration.There is the tenderer to announce release module and tender documents deciphering module in the bid client configuration.Dispose high in the clouds file memory scan module at server end.
Described tenderer announces release module and is responsible for tenderer's information on bidding and bidding document are uploaded to high in the clouds, gives high in the clouds file memory scan module;
Described tender documents encrypting module uses based on the searchable asymmetric-key encryption scheme of keyword (the Secure Channel Free Public Key Encryption with Keyword Search that eliminates safe lane, SCF-PEKS) keyword of the ready tender documents of tenderer is encrypted, acquisition can be retrieved ciphertext C
w=＜A, B 〉.This encryption method is proposed in 2008 by people such as Joonsang Baek.Wherein:
In the following formula, e is bilinear map, H
1Be hash function, g, h
2, Q, h
1Take from tenderer's PKI, use Digital Envelope Technology (AES scheme+ECC scheme) that tender documents are encrypted, and with the high in the clouds that it is uploaded, give high in the clouds file memory scan module;
Described high in the clouds file memory scan module is responsible for all tricks, the tender documents that store and management high in the clouds receives, and the document retrieval function is provided, and described search function can be retrieved ciphertext C by high in the clouds according to the keyword that the tender documents encrypting module provides
w, and the keyword trapdoor T that is provided by the tenderer in this module
w=H
1(w)
β, carry out matching test, thereby realize the document retrieval function;
Described tenderer announces enquiry module and is responsible for all informations on bidding being sent to the bid client and being showed, information retrieval and download function based on keyword are provided simultaneously;
Described tender documents deciphering module is responsible for the tender documents that the tenderer needs are downloaded and are decrypted.
Annexation between the above-mentioned part is:
High in the clouds file memory scan module is announced release module, tender documents deciphering module with the tenderer respectively, the tenderer announces enquiry module and the tender documents encrypting module carries out communication by the Internet.
Beneficial effect
Compare with common Internet Bidding system, the present invention uses the cloud memory technology that tender documents are carried out easily and effectively store and management, by using safely and efficiently encipherment scheme and the effectively searchable public key cryptography of keyword, fail safe and the confidentiality of tender documents have been ensured simultaneously, and provide safely and effectively tender documents search function, for the bid both sides provide safely and efficiently bid transaction platform.
Description of drawings
Fig. 1 is the structure composition frame chart of system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is done progressive full and accurate explanation.
A kind of Internet Bidding system based on the cloud storage comprises server end and client.Wherein, client comprises bid client and bid client, is installed in respectively tenderer, tenderer this locality.Tenderer, tenderer are respectively by being installed in local client login system.
Wherein, in the bid client, dispose the tenderer and announce enquiry module and tender documents encrypting module.In the bid client, dispose the tenderer and announce release module and tender documents deciphering module.Dispose high in the clouds file memory scan module at server end.
High in the clouds file memory scan module is announced release module, tender documents deciphering module with the tenderer respectively, the tenderer announces enquiry module and the tender documents encrypting module carries out communication by the Internet.
The course of work of native system is as follows:
At first, the tenderer logins and inputs information on bidding and bidding document by being installed in local client.Concrete, the tenderer is after registering, and the input username and password can be logined.
Then, the tenderer announces release module tenderer's information on bidding and bidding document is uploaded to high in the clouds, gives high in the clouds file memory scan module.Concrete, the tenderer issues as required and fills in call for tender information needed, and is ready to bidding document, by client the call for tender and bidding document is uploaded to high in the clouds.
Afterwards, after the tenderer logins by the client that is installed in this locality, system will be sent to the bid client to the call for tender, and tenderer user can check the call for tender, and can download relevant bidding document.Especially, the tenderer need not registration and gets final product login system.
When the tenderer prepares to upload tender documents, at first fill in basic document by client, and be ready to tender documents, after being encrypted basic document and tender documents, the tender documents encrypting module is uploaded to high in the clouds.Described ciphering process is divided into two parts, and the one, basic document to be encrypted, concrete employing can be retrieved encipherment scheme and be encrypted, and the described encipherment scheme of retrieving specifically adopts the SCF-PEKS technology; The 2nd, tender documents are encrypted, after first tender documents being compressed, re-use Digital Envelope Technology (AES encipherment scheme+ECC encipherment scheme) it is encrypted.
When the tenderer will retrieve tender documents, need after login, to announce enquiry module by the tenderer and check all tender documents.Concrete, can carry out beyond the clouds retrieval and inquisition by input keyword mode.That is, the user is at the input keyword and select the keyword classification, can retrieve beyond the clouds.Described retrieving may further comprise the steps:
Suppose to have the keyword w that sets, establishing the ciphertext retrieved that calculates through the tender documents encrypting module is C
w, the keyword trapdoor that high in the clouds document retrieval module provides is T
wSuppose that the keyword that the user inputs is w ', if w=w ', then adaptation function returns " yes "; If w ≠ w ', then adaptation function returns " no ".Proof procedure is specific as follows:
At first, calculate the keyword trapdoor: the bid client is calculated its trapdoor T according to the keyword of user's input
w=H
1(w)
β, and it is uploaded to high in the clouds.For example, calculate the trapdoor T of keyword w'
W ', and with T
W 'Be sent to high in the clouds.
Afterwards, carry out the high in the clouds key search: the ciphertext the retrieved C that document retrieval module in high in the clouds will be set keyword w is called in high in the clouds
wWith trapdoor T
W'Carry out matching test, if matching result is shown as " yes ", the affiliated tenderer's basic document of decrypted key word w ' then, and it is returned to the tenderer.
The tenderer is according to tenderer's fileinfo and in conjunction with self needs, and the tender documents that retrieve are downloaded in the request of sending to high in the clouds.Back the tenderer client is passed corresponding tender documents in high in the clouds after receiving download request, after tenderer's client arrives the tender documents from high in the clouds, call tenderer's tender documents deciphering module tender documents are decrypted the original tender documents of acquisition.
Afterwards, select as required the bid winner by the tenderer, and announce release module issue acceptance of the bid bulletin by the tenderer, bid winner's information can be uploaded to high in the clouds.
At last, the tenderer of login is not after login system, and perhaps listed tenderer clicks and refreshes bulletin, all can see the acceptance of the bid bulletin.
So far, once complete bid transaction is finished.
The correctness that the below can retrieve key encrypt method to keyword of the present invention proves description.
Key encrypt method can be retrieved in the band keyword that system of the present invention adopts.At first by data receiver keyword is encrypted, is calculated the trapdoor of keyword by the data receiver, carry out matching test by the third party according to ciphertext and trapdoor at last.Suppose that keyword w and w' are arranged, wherein w is provided by data receiver, and w' is provided by the data receiver.If the below verifies w=w', then adaptation function returns " yes ", if w ≠ w', then adaptation function returns " no ".
If the ciphertext of keyword w is＜A B 〉.The trapdoor of keyword w' is T
W '=H
1(w')
βThe condition that adaptation function returns " yes " is: H
2(e (Q
α+ T
W'), A))=B.Wherein
B=H
2((e (Q, h
1) e (H
1(w), h
2))
r) be two parts of keyword w ciphertext, h
1=g
α, h
2=g
β, being two elements on the elliptic curve group, e is bilinear map, Q takes from the high in the clouds PKI.Derived in the equation left side:
H
2(e(Qα+T
w′),A))＝H
2(e(Q
α+H
1(w')
β),A))
Derived in equation the right:
According to h
1=g
α, h
2=g
β, can obtain by (1) equivalence transformation to (2), can obtain by (2) equivalence transformation to (5) according to the character of bilinear map.
According to the respectively derivation to equation the right and left, obviously, if w=w ', then equation is set up, and return " yes ", otherwise equation is false, and returns " no ".Thereby the public key cryptography scheme with keyword that this research realizes is correct feasible.
Above-mentioned embodiment is arranged as seen, in whole process of exchange, the file that relates to trade secret all never occurs with the plaintext form beyond the clouds and in the transmission course, thereby has ensured fail safe and the confidentiality of file.And safely and effectively tender documents search function is provided, thereby, the cloud memory technology has been applied in the Internet Bidding system safely.
The above only is preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvement; perhaps part technical characterictic wherein is equal to replacement, these improvement and replace and also should be considered as protection scope of the present invention.
Claims (2)
1. the Internet Bidding system based on the cloud storage comprises server end and client, it is characterized in that, described client comprises bid client and bid client, is installed in respectively tenderer, tenderer this locality; Tenderer, tenderer are respectively by being installed in local client login system;
There is the tenderer to announce enquiry module and tender documents encrypting module in the bid client configuration; There is the tenderer to announce release module and tender documents deciphering module in the bid client configuration; Dispose high in the clouds file memory scan module at server end;
Described tenderer announces release module and is responsible for tenderer's information on bidding and bidding document are uploaded to high in the clouds, gives high in the clouds file memory scan module;
Described tender documents encrypting module uses based on the searchable asymmetric-key encryption scheme of keyword of eliminating safe lane, and the keyword of the ready tender documents of tenderer is encrypted, and acquisition can be retrieved ciphertext C
w=＜A, B 〉, wherein:
In the following formula, e is bilinear map, H
1Be hash function, g, h
2, Q, h
1Take from tenderer's PKI, use Digital Envelope Technology that tender documents are encrypted, and with the high in the clouds that it is uploaded, give high in the clouds file memory scan module;
Described high in the clouds file memory scan module is responsible for all tricks, the tender documents that store and management high in the clouds receives, and the document retrieval function is provided, and described search function can be retrieved ciphertext C by high in the clouds according to the keyword that the tender documents encrypting module provides
w, and the keyword trapdoor T that is provided by the tenderer in this module
w=H
1(w)
βCarry out matching test, thereby realize the document retrieval function;
Described tenderer announces enquiry module and is responsible for all informations on bidding being sent to the bid client and being showed, information retrieval and download function based on keyword are provided simultaneously;
Described tender documents deciphering module is responsible for the tender documents that the tenderer needs are downloaded and are decrypted;
Annexation between the above-mentioned part is:
High in the clouds file memory scan module is announced release module, tender documents deciphering module with the tenderer respectively, the tenderer announces enquiry module and the tender documents encrypting module carries out communication by the Internet;
The course of work of native system is as follows:
At first, the tenderer logins and inputs information on bidding and bidding document by being installed in local client;
Then, the tenderer announces release module tenderer's information on bidding and bidding document is uploaded to high in the clouds, gives high in the clouds file memory scan module;
Afterwards, after the tenderer logins by the client that is installed in this locality, system will be sent to the bid client to the call for tender, and tenderer user can check the call for tender, and can download relevant bidding document; Especially, the tenderer need not registration and gets final product login system;
When the tenderer prepares to upload tender documents, at first fill in basic document by client, and be ready to tender documents, after being encrypted basic document and tender documents, the tender documents encrypting module is uploaded to high in the clouds; Described ciphering process is divided into two parts, and the one, basic document to be encrypted, concrete employing can be retrieved encipherment scheme and be encrypted, and the described encipherment scheme of retrieving specifically adopts the SCF-PEKS technology; The 2nd, tender documents are encrypted, after first tender documents being compressed, re-use Digital Envelope Technology it is encrypted;
When the tenderer will retrieve tender documents, need after login, to announce enquiry module by the tenderer and check all tender documents;
The tenderer is according to tenderer's fileinfo and in conjunction with self needs, and the tender documents that retrieve are downloaded in the request of sending to high in the clouds; Back the tenderer client is passed corresponding tender documents in high in the clouds after receiving download request, after tenderer's client arrives the tender documents from high in the clouds, call tenderer's tender documents deciphering module tender documents are decrypted the original tender documents of acquisition;
Afterwards, select as required the bid winner by the tenderer, and announce release module issue acceptance of the bid bulletin by the tenderer, bid winner's information can be uploaded to high in the clouds;
At last, the tenderer of login is not after login system, and perhaps listed tenderer clicks and refreshes bulletin, all can see the acceptance of the bid bulletin.
2. a kind of Internet Bidding system based on the cloud storage as claimed in claim 1 is characterized in that, when the tenderer will retrieve tender documents, carry out beyond the clouds retrieval and inquisition by input keyword mode, that is, the user is at the input keyword and select the keyword classification, can retrieve beyond the clouds; Described retrieving may further comprise the steps:
Suppose to have the keyword w that sets, establishing the ciphertext retrieved that calculates through the tender documents encrypting module is C
w, the keyword trapdoor that high in the clouds document retrieval module provides is T
wSuppose that the keyword that the user inputs is w ', if w=w ', then adaptation function returns " yes "; If w ≠ w ', then adaptation function returns " no "; Proof procedure is specific as follows:
At first, calculate the keyword trapdoor: the bid client is calculated its trapdoor T according to the keyword of user's input
w=H
1(w)
β, and it is uploaded to high in the clouds;
Afterwards, carry out the high in the clouds key search: the ciphertext the retrieved C that document retrieval module in high in the clouds will be set keyword w is called in high in the clouds
wWith trapdoor T
w' carry out matching test, if matching result is shown as " yes ", the tenderer's basic document under the decrypted key word w' then, and it is returned to the tenderer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435762.5A CN102891898B (en) | 2012-11-05 | 2012-11-05 | Network bid inviting and bidding system based on cloud storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435762.5A CN102891898B (en) | 2012-11-05 | 2012-11-05 | Network bid inviting and bidding system based on cloud storage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891898A true CN102891898A (en) | 2013-01-23 |
| CN102891898B CN102891898B (en) | 2015-05-06 |
Family
ID=47535259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210435762.5A Expired - Fee Related CN102891898B (en) | 2012-11-05 | 2012-11-05 | Network bid inviting and bidding system based on cloud storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891898B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559012A (en) * | 2013-11-26 | 2014-02-05 | 武钢集团昆明钢铁股份有限公司 | Automatic synchronous large-screen bid-winning information intercepting and displaying system and method |
| CN105426348A (en) * | 2015-10-22 | 2016-03-23 | 江苏国泰新点软件有限公司 | Extensible Markup Language (XML) file generating method, apparatus and system |
| CN106682824A (en) * | 2016-12-21 | 2017-05-17 | 紫勋智能科技（北京）有限公司 | Electronic bid and tender management system and bid and tender management method |
| CN106933838A (en) * | 2015-12-29 | 2017-07-07 | 北京广联达正源兴邦科技有限公司 | Tender Evaluation Method and bid evaluation system |
| CN107025517A (en) * | 2017-03-14 | 2017-08-08 | 上海网化化工科技有限公司 | A kind of online bidding method and system of chemical products |
| CN107784457A (en) * | 2017-11-21 | 2018-03-09 | 石化盈科信息技术有限责任公司 | E-procurement management method and system based on cloud platform |
| CN107895226A (en) * | 2017-11-01 | 2018-04-10 | 中航技国际经贸发展有限公司 | A kind of e-bidding method and system |
| CN108229781A (en) * | 2016-12-22 | 2018-06-29 | 钢钢网电子商务（上海）股份有限公司 | The data platform display systems and method of a kind of steel project bid information |
| CN110149410A (en) * | 2019-06-05 | 2019-08-20 | 武汉墨仗信息科技股份有限公司 | The bidding documents uploading system of big data breakpoint transmission of the concentrating type based on cloud platform |
| CN110730184A (en) * | 2019-10-22 | 2020-01-24 | 江苏先安科技有限公司 | Novel bidding encryption and decryption method based on SM2 cryptographic algorithm |
| CN111277651A (en) * | 2020-01-20 | 2020-06-12 | 国网江苏招标有限公司 | Remote bidding method and system |
| CN111651795A (en) * | 2020-06-09 | 2020-09-11 | 吴其震 | Bid document disclosing method, system and storage medium based on block chain |
| CN113766012A (en) * | 2021-08-12 | 2021-12-07 | 博思数采科技发展有限公司 | Method and system for distributed rapid encryption distribution and transmission of electronic bidding document |
| CN115115235A (en) * | 2022-06-30 | 2022-09-27 | 广州高新工程顾问有限公司 | Full-process electronic bid inviting information management system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110264939A1 (en) * | 2011-07-01 | 2011-10-27 | Wong Wendy C | Stochastic management of power consumption by computer systems |
| CN102332116A (en) * | 2011-08-05 | 2012-01-25 | 四川电力科学研究院 | Cloud computing SaaS (Software as a Service) service mode-based electric energy quality auxiliary service system and implementation method thereof |
-
2012
- 2012-11-05 CN CN201210435762.5A patent/CN102891898B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110264939A1 (en) * | 2011-07-01 | 2011-10-27 | Wong Wendy C | Stochastic management of power consumption by computer systems |
| CN102332116A (en) * | 2011-08-05 | 2012-01-25 | 四川电力科学研究院 | Cloud computing SaaS (Software as a Service) service mode-based electric energy quality auxiliary service system and implementation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 宋娅菲: ""基于竞标模式的云存储副本放置策略研究"", 《中国优秀硕士学位论文全文数据库》, 15 October 2012 (2012-10-15) * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559012A (en) * | 2013-11-26 | 2014-02-05 | 武钢集团昆明钢铁股份有限公司 | Automatic synchronous large-screen bid-winning information intercepting and displaying system and method |
| CN105426348B (en) * | 2015-10-22 | 2018-05-25 | 江苏国泰新点软件有限公司 | A kind of generation method, the device and system of expandable mark language XML file |
| CN105426348A (en) * | 2015-10-22 | 2016-03-23 | 江苏国泰新点软件有限公司 | Extensible Markup Language (XML) file generating method, apparatus and system |
| CN106933838A (en) * | 2015-12-29 | 2017-07-07 | 北京广联达正源兴邦科技有限公司 | Tender Evaluation Method and bid evaluation system |
| CN106933838B (en) * | 2015-12-29 | 2020-11-10 | 北京广联达正源兴邦科技有限公司 | Bidding evaluation method and bidding evaluation system |
| CN106682824A (en) * | 2016-12-21 | 2017-05-17 | 紫勋智能科技（北京）有限公司 | Electronic bid and tender management system and bid and tender management method |
| CN108229781A (en) * | 2016-12-22 | 2018-06-29 | 钢钢网电子商务（上海）股份有限公司 | The data platform display systems and method of a kind of steel project bid information |
| CN107025517A (en) * | 2017-03-14 | 2017-08-08 | 上海网化化工科技有限公司 | A kind of online bidding method and system of chemical products |
| CN107895226A (en) * | 2017-11-01 | 2018-04-10 | 中航技国际经贸发展有限公司 | A kind of e-bidding method and system |
| CN107784457A (en) * | 2017-11-21 | 2018-03-09 | 石化盈科信息技术有限责任公司 | E-procurement management method and system based on cloud platform |
| CN110149410A (en) * | 2019-06-05 | 2019-08-20 | 武汉墨仗信息科技股份有限公司 | The bidding documents uploading system of big data breakpoint transmission of the concentrating type based on cloud platform |
| CN110730184A (en) * | 2019-10-22 | 2020-01-24 | 江苏先安科技有限公司 | Novel bidding encryption and decryption method based on SM2 cryptographic algorithm |
| CN110730184B (en) * | 2019-10-22 | 2021-11-05 | 江苏先安科技有限公司 | Novel bidding encryption and decryption method based on SM2 cryptographic algorithm |
| CN111277651A (en) * | 2020-01-20 | 2020-06-12 | 国网江苏招标有限公司 | Remote bidding method and system |
| CN111277651B (en) * | 2020-01-20 | 2024-04-09 | 国网江苏招标有限公司 | Remote bidding method and system |
| CN111651795A (en) * | 2020-06-09 | 2020-09-11 | 吴其震 | Bid document disclosing method, system and storage medium based on block chain |
| CN113766012A (en) * | 2021-08-12 | 2021-12-07 | 博思数采科技发展有限公司 | Method and system for distributed rapid encryption distribution and transmission of electronic bidding document |
| CN115115235A (en) * | 2022-06-30 | 2022-09-27 | 广州高新工程顾问有限公司 | Full-process electronic bid inviting information management system |
| CN115115235B (en) * | 2022-06-30 | 2024-02-06 | 广州高新工程顾问有限公司 | Whole-flow electronic bidding information management system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102891898B (en) | 2015-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102891898B (en) | Network bid inviting and bidding system based on cloud storage | |
| CN106961336B (en) | A kind of key components trustship method and system based on SM2 algorithm | |
| CN106603233B (en) | Encryption and decryption method for remote bid opening type bidding system | |
| CN110033258B (en) | Service data encryption method and device based on block chain | |
| CN102546181B (en) | Cloud storage encrypting and deciphering method based on secret key pool | |
| CN107070652B (en) | A kind of car networking method for secret protection that the ciphertext based on CP-ABE is anti-tamper and system | |
| CN103731261B (en) | Secret key distribution method under encrypted repeating data deleted scene | |
| CN101789865B (en) | Dedicated server used for encryption and encryption method | |
| CN105743888A (en) | Agent re-encryption scheme based on keyword research | |
| CN105227566A (en) | Cipher key processing method, key handling device and key handling system | |
| CN104521178A (en) | Method and system for secure multiparty cloud computation | |
| EP3395031B1 (en) | Method for providing a proof of retrievability | |
| CN104809407A (en) | Method and system for encrypting, decrypting and verifying cloud storage front end data | |
| CN103699854B (en) | Data storing method, data access method and storing equipment | |
| KR101615137B1 (en) | Data access method based on attributed | |
| CN102710661B (en) | Cloud storage and aggregation architecture and data storage and aggregation method by using same | |
| CN105007161B (en) | A kind of fuzzy keyword public key search encryption method of trapdoor None- identified | |
| CN103152322A (en) | Method of data encryption protection and system thereof | |
| CN104967693A (en) | Document similarity calculation method facing cloud storage based on fully homomorphic password technology | |
| US10447475B1 (en) | System and method for managing backup of cryptographic keys | |
| CN103607278A (en) | Safe data cloud storage method | |
| CN109063496A (en) | A kind of method and device of data processing | |
| CN102907041B (en) | A kind of data-sharing systems, data distribution systems and data guard method | |
| CN104184736B (en) | A kind of method and system realizing secure cloud and calculate | |
| CN106127081A (en) | The open data fault-tolerant method for secure storing that can verify that |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20181105 |