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Method for coping with bidding decryption failure and capable of proving consistency of bidding files

A consistent and document-based technology, applied in the field of information security, can solve problems such as inconvenient offline bid opening, inconsistent electronic trends, easy leaks, etc., and achieve the effect of promoting openness

Active Publication Date: 2021-09-24
四川省数字证书认证管理中心有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Disadvantages of backup of paper documents: printing, sealing, submission and storage of the paper version are cumbersome, inconsistent with the electronic trend, and easy to leak
[0009] Defects of electronic file backup: the sealing, submission and storage of the U disk or CD-ROM are also cumbersome and easy to leak
[0010] Defects of electronic file hash summary backup: It is necessary to rely on the security measures of a trusted third-party platform to ensure that the summary data is not tampered with and the data is transmitted safely, and there are also defects in the integrity of the electronic file, non-repudiation and generation time. It is inconvenient to support offline bid opening in the bid opening room
[0011] Defects in password envelope decryption: the second encrypted tender document is vulnerable to security threats against password attacks such as password guessing and brute force cracking due to password encryption

Method used

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  • Method for coping with bidding decryption failure and capable of proving consistency of bidding files
  • Method for coping with bidding decryption failure and capable of proving consistency of bidding files

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] A method of provably conforming to bid documents in response to bid decryption failures, comprising:

[0052] Making tender documents:

[0053] (1) The bidding software packs the original bidding file into a ZIP file, which is recorded as Fzip=ZIP(File1,...,FileN), and calculates the HASH value of Fzip, which is recorded as H1=HASH(Fzip);

[0054] (2) The bidding software uses the private key SignCert_PriKey of the bidder's signature certificate to sign H1, and obtain the signature value S1=Sign(SignCert_PriKey, H1);

[0055] (3) The standard making software stamps the time stamp of the third-party CA institution on the signature value S1, and obtains the time stamp T1=TsaSign(S1);

[0056] (4) The standard making software combines the values ​​(H1, S1, T1) generated in steps (1)-(3) to generate Fzip’s additional signature file Fsign=H1+S1+T1;

[0057] (5) The standard making software calculates the HASH value for Fsign, and obtains H2=HASH(Fsign);

[0058] (6) The b...

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Abstract

The invention discloses a method for coping with bidding decryption failure and capable of proving the consistency of bidding files. The method comprises the following steps of making a bidding document, including generating a standby bidding file and generating an online bidding file; uploading the bidding document, enabling a bidder to upload the online bidding file to a bidding system platform server, using the server to sign and solidify evidence through a timestamp, and enabling the bidder to copy the standby bidding file to a local USB flash disk of a user or record the standby bidding file into an optical disk for standby application; carrying out bid opening verification, firstly verifying the validity of the online bidding file; carrying out bid opening decryption, and if decryption fails, extracting the standby bidding file. The method can be well used as a remedy scheme for bidding document decryption failure during bid opening.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for proving the consistency of bidding documents in response to bidding decryption failures. Background technique [0002] At present, the decryption failure remedy scheme adopted by most electronic bidding systems mainly adopts several methods of "paper file / electronic file backup, electronic file hash summary backup, and password envelope decryption": [0003] Backup of paper documents refers to: during electronic bidding, bidders are allowed to submit a sealed paper document as a backup. When decryption fails, the bidder or bid supervisor will conduct a seal inspection, and then unpack and continue the bid opening procedure; [0004] Electronic file backup refers to: during electronic bidding and bidding, bidders are allowed to submit the unencrypted plaintext backup file of the bidding file in the form of a sealed U disk or CD-ROM before the bidding dead...

Claims

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Application Information

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IPC IPC(8): G06F21/64G06F21/60
CPCG06F21/64G06F21/602G06F2221/2107
Inventor 尹才敏张晓军杨飞
Owner 四川省数字证书认证管理中心有限公司
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