Electronic signature verifying method and device

A technology of electronic signature and verification method, which is applied in the direction of checking the correctness of marks, instruments, computer parts, etc., and can solve the problems that the signature cannot be displayed to the user, the integrity and non-repudiation of the bill content are not well resolved, etc. To achieve the effect of easy expansion

Inactive Publication Date: 2002-05-22
上海电子商务安全证书管理中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that the signature cannot be displayed intuitively to the user
[0005] The above-mentioned electronic bills or electronic bills basically use

Method used

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  • Electronic signature verifying method and device
  • Electronic signature verifying method and device
  • Electronic signature verifying method and device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1: According to figure 1 — image 3 An example of the verification of an electronic signature anti-counterfeit invoice of the present invention is given to illustrate the application of the anti-counterfeit bill verification technology in e-commerce.

[0031] See figure 1 , It gives an example of the e-commerce application of the present invention. As can be seen from the figure, the main steps of the e-commerce invoice formation verification process are as follows:

[0032] Step 1. When the user is dissatisfied with the goods and requests to return the goods, the user shows the electronic invoice (may

[0033] Print the invoice on the web page)

[0034] Step 2. The merchant enters the user's invoice information into the anti-counterfeit bill verifier (according to actual

[0035] The application can have multiple entry methods, such as scanner, keyboard entry, etc.).

[0036] Step 3. Use the merchant's certificate for the anti-counterfeit receipt m...

Example Embodiment

[0042] Example 2: According to Figure 4 with Figure 5 Give examples of verification of electronic signature anti-counterfeiting contracts:

[0043] See Figure 4 with Figure 5 , The verification steps are as follows: Step 2. Enter the contract information into the verification machine. In the embodiment, the plain text of the contract may be: "The name of the contract: ****, the first paragraph of the contract content: **** The second paragraph: ****, time: ****year**month**day "; Step 22. Use the scanner to scan the signed barcode into the verification machine. In this embodiment, the signature information is a 128-byte binary string; steps 23 and 24, use a certificate of the contract signer stored in the verifier (in the verifier) ​​for the signature information (128-byte binary string) You can put multiple certificates) in the public key for decryption, and get the digest A (128 bit binary string) of the contract plaintext. Step 25: Perform MD5hash operation on the obtained c...

Example Embodiment

[0023] figure 1 It is a schematic diagram of the verification and formation process of an embodiment of the present invention (electronic invoice).

[0044] If the two abstracts are inconsistent, perform step 37. The two source data (official document information) must be inconsistent, indicating that the official document information read by the verification machine is inconsistent with the official document information that generated the signature, indicating that the official document has been modified. Otherwise, go to step 38, indicating that the official document has not been modified and the verification is successful.

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Abstract

The electronic signature checking method incldues the following steps: (1) reading in signature information and cleartext information, (2) using public key being in user certificate to decipher signature and obtained abstraction of original cleartext, (3) abstracting clartext to obtain abstration of new cleartext, (4) comparing said two informatino abstractions and checking that they are identical or not, and (5). giving out modified informatino or correct inforamtion structure. The advantages of the invention are: 1. can check electronic bill at all times and places and can distinguish the true from the false, having no need of data book and its application is convenient; 2. said check work is created on the basis of impartial third party. and 3. making electronic signature visual, can implement on-network office.

Description

technical field [0001] The invention relates to a verification method and device for an electronic signature. Background technique [0002] Electronic Billing and Payment (EBP) is the most efficient application in the Internet. From 1998 to 1999, EBP's services developed rapidly in the United States. Many traditional payment methods have turned to online payment and online electronic bills, such as Boston Edison (Boston Edison), GTE (General Telephone and Electric Company), Bank of America (Bank of America), AT&T (American Telephone and Telegraph Company) and nd Worldcom (World Communications Limited). These services have been fully developed. Another example is Checkfree Corporation of Norcross (Chake Furui website), GA (www.checkfree.com), at the end of 1998, it had three million consumers and 700 banks using their system, and their service development Fast, and quickly occupied the US market. However, this type of electronic bill is often only used by some more autho...

Claims

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Application Information

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IPC IPC(8): G06K5/00
Inventor 钱名海冯晔潘焱许强
Owner 上海电子商务安全证书管理中心有限公司
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