CN101655931A - Electronic public bidding method based on digital certificate - Google Patents
Electronic public bidding method based on digital certificate Download PDFInfo
- Publication number
- CN101655931A CN101655931A CN200810041955A CN200810041955A CN101655931A CN 101655931 A CN101655931 A CN 101655931A CN 200810041955 A CN200810041955 A CN 200810041955A CN 200810041955 A CN200810041955 A CN 200810041955A CN 101655931 A CN101655931 A CN 101655931A
- Authority
- CN
- China
- Prior art keywords
- bidding documents
- bidding
- encryption
- certificate
- documents
- 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.)
- Pending
Links
Images
Abstract
The invention discloses an electronic public bidding method based on digital certificate, comprising: making encryption bidding documents offline, the encryption bidding documents being encrypted withcertificate public key of bidders; verifying encryption bidding documents offline, The binders verifying the made bidding documents to confirm whether the encryption bidding documents may open bid; encrypting bidding documents test labels ,in predetermined period, uploading the encryption bidding documents to a bid system, the system comparing the cryptograph bidding documents with signature string of the cryptograph bidding documents, to obtain label testing result, if yes, the system receiving the encryption bidding documents, else rejecting; opening bid and testing label for the encryptionbidding documents, in period of opening bid, the binders submitting request of opening bid in the system, the system decoding the encryption bidding documents, to obtain the encryption bidding documents, the proclaimed bidding documents signature string, the encryption bidding documents signature string, the random encryption key and certificate sequence number of the binders, to verify signatureof the encryption bidding documents and decrypting the bit.
Description
Technical field
The present invention relates to electronic public bidding method based on digital certificate.
Background technology
So-called e-bidding, be meant and utilize The present computer technology, with the form record of electronic document,, and realize the informationalized a kind of bidding management system of bid opening and bid appraisal overall process by data messages such as removable electronic storage medium or internet transmission bid and tender documents.Online bid is as a kind of network information application system, similar potential safety hazard of infosystem and safety problem with other, for example equipment failure, the attack of virus, network hacker, or even internal staff's destruction etc., but as a kind of peculiar system that realizes particular service, online bid also has the demand for security of some himself characteristics.
Summary of the invention
The invention provides a kind of electronic public bidding method, satisfy the above-mentioned demand for security of online bid based on digital certificate.
Should comprise based on the electronic public bidding method of digital certificate:
Off-line is made and is encrypted bidding documents, encrypts bidding documents and uses tenderer's our certificate PKI to encrypt;
Off-line verification is encrypted bidding documents, and the tenderer verifies that to the encryption bidding documents of making can affirmation encryption bidding documents successfully open bid and test label;
Encrypt bidding documents and test label, in the given time, the tenderer will encrypt bidding documents and be uploaded to Tender System, Tender System is with ciphertext bidding documents and the comparison of ciphertext bidding documents signature string, obtain testing the label result, test to sign and pass through then Tender System acceptance encryption bidding documents, otherwise the Tender System refusal is encrypted bidding documents;
Encrypt the bidding documents opening of bid and test label, in the opening of bid time, the tenderer submits the opening of bid request in Tender System, Tender System will be encrypted bidding documents and be unpacked, obtain ciphertext bidding documents, the sequence number of bidding documents signature string, ciphertext bidding documents signature string, the random key of encrypting, tenderer's our certificate expressly, the signature that bidding documents is encrypted in checking is the deciphering opening of bid also.
When the operation side of this Tender System carries out the operation of key business, with the key message of operation, such as the packing data of time, personage, operation, and with the certificate private key of the operation side crucial official document of formation of signing.
Should also comprise based on the electronic public bidding method of digital certificate: announce crucial official document, when the operation side of Tender System announces crucial official document, time, the side of operation ID, the crucial official document content packaging of announcing official document are obtained compressed package, sign with the certificate private key of operation side and to obtain signature string, compressed package and signature serially add the certificate private key sign of current operation side, and packing forms crucial briefcase and announces once more.
Should also comprise based on the electronic public bidding method of digital certificate: the crucial official document of being announced is tested label, the crucial briefcase that obtains is unpacked, obtain the certificate private key sign of compressed package, signature string, operation side, certificate private key sign according to operation side obtains testing the required signer certificate PKI of label, use afterwards this then signer certificate PKI compressed package and signature string are tested label, obtain testing the label result.
Above-mentioned off-line is made the encryption bidding documents and is comprised: use off-line tools, our certificate public key encryption according to plaintext bidding documents of submitting to and tenderer under the situation of off-line obtains the ciphertext bidding documents, expressly the bidding documents signature is gone here and there, the ciphertext bidding documents is signed string, the random key of encrypting and the sequence number of our certificate, with ciphertext bidding documents, the expressly sequence number packing of bidding documents signature string, ciphertext bidding documents signature string, the random key of encrypting and our certificate private key, obtain encrypting bidding documents.
Above-mentioned off-line verification is encrypted bidding documents and is comprised: use off-line tools, the encryption bidding documents that to make under the situation of off-line unpacks, obtain ciphertext bidding documents, plaintext bidding documents signature string, ciphertext bidding documents signature string, the random key of encryption and the sequence number of our certificate, can the encryption bidding documents that checking generates successfully open bid and test label.
Adopt technical scheme of the present invention, can effectively eliminate the potential safety hazard of online bid, satisfy the various demands for security of online bid.
Description of drawings
Fig. 1 is of the present invention based on the encryption of the off-line in the electronic public bidding method of digital certificate bidding documents making logic;
Fig. 2 is of the present invention based on the encryption of the off-line in the electronic public bidding method of digital certificate bidding documents verifying logic;
Fig. 3 of the present inventionly tests the label logic based on the encryption bidding documents in the electronic public bidding method of digital certificate;
Fig. 4 be of the present invention based on the encryption bidding documents in the electronic public bidding method of digital certificate opening of bid and test the label logic;
Fig. 5 is of the present invention based on the key business signature logic in the electronic public bidding method of digital certificate;
Fig. 6 is of the present invention based on the crucial official document formation logic of having signed in the electronic public bidding method of digital certificate;
Fig. 7 of the present inventionly tests the label logic based on the crucial official document in the electronic public bidding method of digital certificate.
Embodiment
The present invention has disclosed a kind of electronic public bidding method based on digital certificate, comprising:
Off-line is made and is encrypted bidding documents, encrypts bidding documents and uses tenderer's our certificate PKI to encrypt.This off-line is made the encryption bidding documents and is comprised: use off-line tools, our certificate public key encryption according to plaintext bidding documents of submitting to and tenderer under the situation of off-line obtains the ciphertext bidding documents, expressly the bidding documents signature is gone here and there, the ciphertext bidding documents is signed string, the random key of encrypting and the sequence number of our certificate private key, with ciphertext bidding documents, the expressly sequence number packing of bidding documents signature string, ciphertext bidding documents signature string, the random key of encrypting and our certificate, obtain encrypting bidding documents.
Off-line verification is encrypted bidding documents, and the tenderer verifies that to the encryption bidding documents of making can affirmation encryption bidding documents successfully open bid and test label.This off-line verification is encrypted bidding documents and is comprised: use off-line tools, the encryption bidding documents that to make under the situation of off-line unpacks, obtain ciphertext bidding documents, plaintext bidding documents signature string, ciphertext bidding documents signature string, the random key of encryption and the sequence number of our certificate, can the encryption bidding documents that checking generates successfully open bid and test label.
Encrypt bidding documents and test label, in the given time, the tenderer will encrypt bidding documents and be uploaded to Tender System, Tender System is with ciphertext bidding documents and the comparison of ciphertext bidding documents signature string, obtain testing the label result, test to sign and pass through then Tender System acceptance encryption bidding documents, otherwise the Tender System refusal is encrypted bidding documents.
Encrypt the bidding documents opening of bid and test label, in the opening of bid time, the tenderer submits the opening of bid request in Tender System, Tender System will be encrypted bidding documents and be unpacked, obtain ciphertext bidding documents, the sequence number of bidding documents signature string, ciphertext bidding documents signature string, the random key of encrypting, tenderer's our certificate expressly, the signature that bidding documents is encrypted in checking is the deciphering opening of bid also.
When the operation side of Tender System carries out the operation of key business, with the key message of operation, such as the packing data of time, personage, operation, and with the certificate private key of the operation side crucial official document of formation of signing.
Should also comprise based on the electronic public bidding method of digital certificate: announce crucial official document, when the operation side of Tender System announces crucial official document, time, the side of operation ID, the crucial official document content packaging of announcing official document are obtained compressed package, sign with the certificate private key of operation side and to obtain signature string, compressed package and signature serially add the certificates identified of current operation side, and packing forms crucial briefcase and announces once more.
This method is also tested label to the crucial official document of being announced, the crucial briefcase that obtains is unpacked, obtain the certificates identified of compressed package, signature string, operation side, certificates identified according to operation side obtains testing the required signer certificate PKI of label, use afterwards this then signer certificate PKI compressed package and signature string are tested label, obtain testing the label result.
Introduce example of the present invention below in conjunction with Fig. 1-Fig. 7.
Fig. 1 is of the present invention based on the encryption of the off-line in the electronic public bidding method of digital certificate bidding documents making logic.As shown in Figure 1, off-line encryption bidding documents making logic is as follows:
1) read random key length in the configuration file, and generate the random key of this length, random key and symmetric encipherment algorithm (TripleDES) are encrypted the plaintext bidding documents, generate the ciphertext bidding documents.
2) respectively plaintext bidding documents and ciphertext bidding documents are extracted summary, respectively plaintext bidding documents summary and ciphertext bidding documents summary are signed with our certificate private key again, obtain expressly bidding documents signature string and ciphertext bidding documents signature string.
3) using our certificate PKI to the 1st) random key that generates in the step carries out digital envelope operation (asymmetric encryption), obtains the ciphertext random key.
4) obtain the sequence number (unique identification) of our certificate.
5) with the 1st) the ciphertext bidding documents that obtains of step, the 2nd) the plaintext bidding documents signature string and the ciphertext bidding documents signature string that obtain of step, the 3rd) the ciphertext random key that obtains of step, the 4th) certificate serial number that obtains of step, pack together, obtain encrypting the bidding documents briefcase.
Fig. 2 is of the present invention based on the encryption of the off-line in the electronic public bidding method of digital certificate bidding documents verifying logic.Shown in Figure 2, it is as follows that off-line is encrypted the bidding documents verifying logic:
1) the encryption bidding documents briefcase that will import unpacks, and obtains the ciphertext bidding documents, and expressly bidding documents signature string and ciphertext bidding documents signature are gone here and there ciphertext random key, certificate serial number.
2) certificate serial number and the current sequence number of certificate that using are compared, if different, prompting " certificate of asking use to encrypt bidding documents is verified ", and withdraw from whole checking flow process.
3) obtain the certificate PKI of current certificate, be used to test label, bidding documents and ciphertext bidding documents signature string are encrypted in input simultaneously, propose the summary of ciphertext bidding documents earlier, certifying signature again, and return and test the label result.
4) the ciphertext random key is used the certificate private key of current certificate carry out the digital envelope deciphering, obtain random key expressly.
5) use random key, the ciphertext bidding documents is carried out symmetry deciphering (TripleDES), obtain expressly bidding documents.
6) use the certificate PKI of current certificate, be used to test label, input simultaneously is bidding documents and bidding documents signature string expressly expressly, proposes the expressly summary of bidding documents earlier, at certifying signature, and returns and tests the label result.
Fig. 3 of the present inventionly tests the label logic based on the encryption bidding documents in the electronic public bidding method of digital certificate.This step is used for bidding documents when uploading, and this moment opening of bid not, so only the signature of bidding documents is encrypted in checking.As shown in Figure 3, encrypt bidding documents and test that to sign logic as follows:
1) the encryption bidding documents briefcase that will submit to unpacks, and obtains the ciphertext bidding documents, and expressly bidding documents signature string and ciphertext bidding documents signature are gone here and there ciphertext random key, certificate serial number.
2), from user profile database, retrieve this user's certificate PKI according to certificate serial number.
3) use this user's certificate PKI, be used to test label, bidding documents and ciphertext bidding documents signature string are encrypted in input simultaneously, extract the summary of ciphertext bidding documents earlier, certifying signature again, and return and test the label result.
Fig. 4 be of the present invention based on the encryption bidding documents in the electronic public bidding method of digital certificate opening of bid and test the label logic.As shown in Figure 4, encrypt bidding documents opening of bid and test that to sign logic as follows:
1) obtains the related data of bidding documents to be opened bid (before submitting to), comprise the ciphertext bidding documents, bidding documents signature string expressly, ciphertext random key, certificate serial number.
2) certificate serial number and the current sequence number of certificate that using are compared, if different, prompting " certificate of asking use to encrypt bidding documents is opened bid ", and withdraw from whole opening of bid flow process, if identical, then from user profile database, obtain this user's certificate PKI, stand-by.
3) in the client of operation pages, use active user's certificate private key, the ciphertext random key is carried out the digital envelope deciphering, obtain expressly random key, then with the plaintext random key, use the certificate PKI of bidding system certificate to carry out the digital envelope encryption, obtain the random key of Tender System certificate public key encryption.
4) in the backstage service end, use the certificate private key of Tender System certificate, the random key of Tender System certificate public key encryption is carried out the digital envelope deciphering, obtain random key expressly.
5) use expressly random key, the ciphertext bidding documents is carried out symmetry deciphering (TripleDES), obtain expressly bidding documents.
6) use expressly bidding documents signature word string, the plaintext bidding documents extracted summary and tests label, test in the label process and used step 2) the certificate PKI, as test and sign successfully, then return and open bid successfully.
Fig. 5 is of the present invention based on the key business signature logic in the electronic public bidding method of digital certificate.As shown in Figure 5, key business signature logic is as follows:
1) obtains the data of key business, as handle a plurality of files and then file is packed as key business data.
2) key business data is extracted summary, and use current operator's certificate private key to sign, obtain the signature string summary.
3) obtain key business information (action name, operator, running time etc.).
4) with key business data, signature string, key business information (action name, operator, running time etc.) is charged to key business Operation Log database.
Fig. 6 is of the present invention based on the crucial official document formation logic of having signed in the electronic public bidding method of digital certificate.The crucial official document formation logic of having signed as shown in Figure 6, is as follows:
1) selection needs the crucial official document of announcement, and crucial official document is extracted summary, uses the certificate private key of publisher then, and summary is signed, and obtains the signature string.
2) obtain the certificate serial number of publisher.
3) with official document, signature string, certificate serial number, packing together, the crucial official document of having been signed is uploaded announcement.
Fig. 7 of the present inventionly tests the label logic based on the crucial official document in the electronic public bidding method of digital certificate.As shown in Figure 7, crucial official document tests that to sign logic as follows:
1) the crucial official document that will sign unpacks, and obtains the ciphertext bidding documents, official document, signature string, certificate serial number.
2), from user profile database, retrieve this user's certificate PKI according to certificate serial number.
3) use this user's certificate PKI, be used to test label, import official document and signature string simultaneously, extract the summary of official document earlier, certifying signature again, and return and test the label result.
Adopt technical scheme of the present invention, can effectively eliminate the potential safety hazard of online bid, satisfy the various demands for security of online bid.
Claims (6)
1. the electronic public bidding method based on digital certificate is characterized in that, comprising:
Off-line is made and is encrypted bidding documents, and described encryption bidding documents uses tenderer's our certificate PKI to encrypt;
Off-line verification is encrypted bidding documents, and the tenderer verifies the encryption bidding documents of making, and confirms that can described encryption bidding documents successfully open bid and test label;
Encrypt bidding documents and test label, in the given time, the tenderer is uploaded to Tender System with described encryption bidding documents, described Tender System is with ciphertext bidding documents and the comparison of ciphertext bidding documents signature string, obtain testing the label result, test label and accept described encryption bidding documents, otherwise described Tender System is refused described encryption bidding documents by described Tender System then;
Encrypt the bidding documents opening of bid and test label, in the opening of bid time, the tenderer submits the opening of bid request in Tender System, Tender System unpacks described encryption bidding documents, obtain ciphertext bidding documents, the sequence number of bidding documents signature string, ciphertext bidding documents signature string, the random key of encrypting, tenderer's our certificate expressly, the signature that bidding documents is encrypted in checking is the deciphering opening of bid also.
2. the electronic public bidding method based on digital certificate as claimed in claim 1, it is characterized in that, when the operation side of described Tender System carries out the operation of key business, key message with described operation, such as the packing data of time, personage, operation, and sign with the certificate private key of operation side and to form crucial official document.
3. the electronic public bidding method based on digital certificate as claimed in claim 2 is characterized in that, also comprises:
Announce crucial official document, when the operation side of described Tender System announces crucial official document, time, the side of operation ID, the crucial official document content packaging of announcing official document are obtained compressed package, sign with the certificate private key of operation side and to obtain signature string, described compressed package and signature serially add the certificate private key sign of current operation side, and packing forms crucial briefcase and announces once more.
4. the electronic public bidding method based on digital certificate as claimed in claim 3 is characterized in that, also comprises:
The crucial official document of being announced is tested label, the crucial briefcase that obtains is unpacked, obtain the certificate private key sign of compressed package, signature string, operation side, certificate private key sign according to operation side obtains testing the required signer certificate PKI of label, use afterwards this then signer certificate PKI compressed package and signature string are tested label, obtain testing the label result.
5. the electronic public bidding method based on digital certificate as claimed in claim 1, it is characterized in that, described off-line is made the encryption bidding documents and is comprised: use off-line tools, under the situation of off-line, encrypt and obtain ciphertext bidding documents, expressly bidding documents signature string, ciphertext bidding documents signature string, the random key of encrypting and the sequence number of our certificate according to plaintext bidding documents of submitting to and tenderer's our certificate, with ciphertext bidding documents, the expressly sequence number packing of bidding documents signature string, ciphertext bidding documents signature string, the random key of encrypting and our certificate, obtain encrypting bidding documents.
6. the electronic public bidding method based on digital certificate as claimed in claim 1, it is characterized in that, described off-line verification is encrypted bidding documents and is comprised: use off-line tools, the encryption bidding documents that to make under the situation of off-line unpacks, obtain ciphertext bidding documents, plaintext bidding documents signature string, ciphertext bidding documents signature string, the random key of encryption and the sequence number of our certificate, can the encryption bidding documents that checking generates successfully open bid and test label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041955A CN101655931A (en) | 2008-08-21 | 2008-08-21 | Electronic public bidding method based on digital certificate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041955A CN101655931A (en) | 2008-08-21 | 2008-08-21 | Electronic public bidding method based on digital certificate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101655931A true CN101655931A (en) | 2010-02-24 |
Family
ID=41710216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810041955A Pending CN101655931A (en) | 2008-08-21 | 2008-08-21 | Electronic public bidding method based on digital certificate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101655931A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102289610A (en) * | 2011-06-08 | 2011-12-21 | 无敌科技(西安)有限公司 | Offline certificate control and management system and method of digital rights management (DRM) of embedded device |
| CN102663640A (en) * | 2012-05-02 | 2012-09-12 | 四川建设网有限责任公司 | Remote bidding method and system |
| CN103795523A (en) * | 2014-01-14 | 2014-05-14 | 福州市勘测院 | Multilayer electronic tender encryption and decryption system and method for electronic tendering |
| CN105790940A (en) * | 2016-04-14 | 2016-07-20 | 广东省电子商务认证有限公司 | Electronic bid-inviting and bidding system and method based on Shamir threshold |
| CN106603233A (en) * | 2017-01-04 | 2017-04-26 | 顾建明 | Encryption and decryption method for remote bid opening type bidding system |
| CN108765058A (en) * | 2018-04-28 | 2018-11-06 | 中国科学院信息工程研究所 | A kind of safe Synergistic method of manufacture link multiple entity based on block chain |
| CN110147687A (en) * | 2019-05-05 | 2019-08-20 | 政采云有限公司 | Endorsement method and system based on electronic business license in electronic bidding |
| CN110472426A (en) * | 2019-08-02 | 2019-11-19 | 南京鑫智链科技信息有限公司 | A kind of scanning encryption and decryption tender documents method replacing U-shield in kind |
| 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 |
| CN111539032A (en) * | 2020-06-17 | 2020-08-14 | 上海安密信科技有限公司 | Electronic signature application system resistant to quantum computing disruption and implementation method thereof |
| CN111861473A (en) * | 2020-07-31 | 2020-10-30 | 贵州光奕科科技有限公司 | Electronic bidding system and method |
| CN112085576A (en) * | 2020-09-03 | 2020-12-15 | 上海容基工程项目管理有限公司 | Online bidding method, device, system and storage medium |
| CN113094725A (en) * | 2021-04-01 | 2021-07-09 | 北京优易惠技术有限公司 | Encryption and decryption method and system for remotely and centrally bidding documents |
| CN113139166A (en) * | 2021-03-16 | 2021-07-20 | 标信智链(杭州)科技发展有限公司 | Evaluation expert signature method and device based on cloud certificate |
| CN114757747A (en) * | 2022-06-09 | 2022-07-15 | 国网浙江省电力有限公司 | Automatic processing method and device for electronic purchase data |
| CN114820147A (en) * | 2022-06-02 | 2022-07-29 | 杭州天谷信息科技有限公司 | Signing method and signing system for staged electronic contract |
| CN117236905A (en) * | 2023-11-13 | 2023-12-15 | 北京国电通网络技术有限公司 | Method, device, electronic equipment and computer readable medium for checking bidding documents |
-
2008
- 2008-08-21 CN CN200810041955A patent/CN101655931A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102289610A (en) * | 2011-06-08 | 2011-12-21 | 无敌科技(西安)有限公司 | Offline certificate control and management system and method of digital rights management (DRM) of embedded device |
| CN102663640A (en) * | 2012-05-02 | 2012-09-12 | 四川建设网有限责任公司 | Remote bidding method and system |
| CN103795523A (en) * | 2014-01-14 | 2014-05-14 | 福州市勘测院 | Multilayer electronic tender encryption and decryption system and method for electronic tendering |
| CN103795523B (en) * | 2014-01-14 | 2017-01-04 | 福州市勘测院 | Electric bidding document multilamellar encrypting and deciphering system and method for e-bidding |
| CN105790940B (en) * | 2016-04-14 | 2019-09-13 | 广东省电子商务认证有限公司 | E-bidding system and method based on Shamir thresholding |
| CN105790940A (en) * | 2016-04-14 | 2016-07-20 | 广东省电子商务认证有限公司 | Electronic bid-inviting and bidding system and method based on Shamir threshold |
| CN106603233A (en) * | 2017-01-04 | 2017-04-26 | 顾建明 | Encryption and decryption method for remote bid opening type bidding system |
| CN106603233B (en) * | 2017-01-04 | 2020-01-21 | 顾建明 | Encryption and decryption method for remote bid opening type bidding system |
| CN108765058B (en) * | 2018-04-28 | 2021-10-01 | 中国科学院信息工程研究所 | Manufacturing link multi-entity security cooperation method based on block chain |
| CN108765058A (en) * | 2018-04-28 | 2018-11-06 | 中国科学院信息工程研究所 | A kind of safe Synergistic method of manufacture link multiple entity based on block chain |
| CN110147687A (en) * | 2019-05-05 | 2019-08-20 | 政采云有限公司 | Endorsement method and system based on electronic business license in electronic bidding |
| CN110472426B (en) * | 2019-08-02 | 2020-03-27 | 南京鑫智链科技信息有限公司 | Method for scanning, encrypting and decrypting bid document instead of real object U shield |
| CN110472426A (en) * | 2019-08-02 | 2019-11-19 | 南京鑫智链科技信息有限公司 | A kind of scanning encryption and decryption tender documents method replacing U-shield in kind |
| 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 |
| 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 |
| CN111539032A (en) * | 2020-06-17 | 2020-08-14 | 上海安密信科技有限公司 | Electronic signature application system resistant to quantum computing disruption and implementation method thereof |
| CN111539032B (en) * | 2020-06-17 | 2023-03-03 | 上海安密信科技有限公司 | Electronic signature application system resistant to quantum computing disruption and implementation method thereof |
| CN111861473A (en) * | 2020-07-31 | 2020-10-30 | 贵州光奕科科技有限公司 | Electronic bidding system and method |
| CN112085576A (en) * | 2020-09-03 | 2020-12-15 | 上海容基工程项目管理有限公司 | Online bidding method, device, system and storage medium |
| CN113139166A (en) * | 2021-03-16 | 2021-07-20 | 标信智链(杭州)科技发展有限公司 | Evaluation expert signature method and device based on cloud certificate |
| CN113094725A (en) * | 2021-04-01 | 2021-07-09 | 北京优易惠技术有限公司 | Encryption and decryption method and system for remotely and centrally bidding documents |
| CN113094725B (en) * | 2021-04-01 | 2023-09-01 | 北京优易惠技术有限公司 | Encryption and decryption method and system for bidding documents opened remotely and intensively |
| CN114820147A (en) * | 2022-06-02 | 2022-07-29 | 杭州天谷信息科技有限公司 | Signing method and signing system for staged electronic contract |
| CN114820147B (en) * | 2022-06-02 | 2022-11-25 | 杭州天谷信息科技有限公司 | Signing method and signing system for staged electronic contract |
| CN114757747A (en) * | 2022-06-09 | 2022-07-15 | 国网浙江省电力有限公司 | Automatic processing method and device for electronic purchase data |
| CN117236905A (en) * | 2023-11-13 | 2023-12-15 | 北京国电通网络技术有限公司 | Method, device, electronic equipment and computer readable medium for checking bidding documents |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101655931A (en) | Electronic public bidding method based on digital certificate | |
| US10944575B2 (en) | Implicitly certified digital signatures | |
| CN108092982B (en) | Data storage method and system based on alliance chain | |
| CN106603233B (en) | Encryption and decryption method for remote bid opening type bidding system | |
| CN102484638B (en) | Layered protection and validation of identity data delivered online via multiple intermediate clients | |
| WO2021120683A1 (en) | Method and apparatus for secure communication based on identity authentication | |
| EP0880254B1 (en) | Security system and method for financial institution server and client web browser | |
| CN100576795C (en) | Public security broadcast control media management and its complete authentication method of not distorted of identification | |
| CN105656920B (en) | A kind of encryption and decryption method and system for posting number of packages evidence based on express delivery | |
| CN110213041A (en) | Data ciphering method, decryption method, device, electronic equipment and storage medium | |
| US20120314856A1 (en) | Implicitly certified public keys | |
| US9438589B2 (en) | Binding a digital file to a person's identity using biometrics | |
| CN105635070B (en) | Anti-counterfeiting method and system for digital file | |
| CN101610153A (en) | Electronic signature authentication method based on ellipse curve signature algorithm | |
| CN108199844B (en) | Method for supporting off-line SM9 algorithm key first application downloading | |
| CN103905204A (en) | Data transmission method and transmission system | |
| CN105790940A (en) | Electronic bid-inviting and bidding system and method based on Shamir threshold | |
| CN103414699A (en) | Authentication method for client certificate, server and client | |
| CN101833724A (en) | System and method for saving e-commerce data telegraph text and forming judicial evidence by other party | |
| CN109413116A (en) | A kind of believable cloud identity identifying method and system | |
| CN109767218A (en) | Block chain certificate processing method and system | |
| CN104200154A (en) | Identity based installation package signing method and identity based installation package signing device | |
| CN112163191A (en) | Education resource sharing method and system based on national secret block chain | |
| CN112597545B (en) | Medical electronic contract evidence-preserving method based on blockchain technology | |
| CN102857487A (en) | Method and system for remote tender invitation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100224 |