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Credit sign accidental streakline generating method

A credit and identification technology, used in secure communication devices, user identity/authority verification, digital transmission systems, etc., can solve problems such as inability to identify authenticity and easy to be scanned and copied.

Inactive Publication Date: 2009-07-22
唐文凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, once the electronic images of seals, emblems, and personal signatures signed under this method are printed on paper documents, they are also easy to be scanned and copied, making it impossible to identify authenticity

Method used

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  • Credit sign accidental streakline generating method
  • Credit sign accidental streakline generating method
  • Credit sign accidental streakline generating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention relates to a method for generating random lines of credit marks. The following describes in detail how the present invention is implemented in conjunction with the accompanying drawings:

[0029] Such as figure 1 Shown:

[0030] In computer system, get ready a computer electronic file step 111 to be signed; Get ready to use the electronic image step 112 of the credit identification pattern (such as overprint seal die); Use the electronic file content of step 111 as data source, input bulk The column function calculates the hash value step 120; uses the asymmetric key in the RSA digital signature technology system to encrypt the hash value step 130; obtains the length 1024 bit (bit) digital signature value step 140; (such as a seal) has a limited geometric area, and the data to generate a digital pattern is too long, so there are many characters. The more characters in the limited geometric area of ​​the seal, the smaller the font size of the chara...

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PUM

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Abstract

The invention discloses a method for generating random lines of a credit mark, which is characterized in that an electronic file of a credit mark pattern to be signed is prepared in a computer system, the content of the electronic file is used as a data source, and a hash function is input to calculate a hash value ;Encrypt the hash value with an asymmetric key to obtain a digital signature value, arrange and distribute this group of values ​​into a digital pattern according to the geometric shape of the credit logo pattern, and overlap it on the credit logo pattern. The strokes of this group of digital patterns and the credit logo map The overlapping part of the text is used as the line track to form the random line of the credit identification digital signature.

Description

technical field [0001] The invention relates to credit file anti-counterfeiting technology, in particular to a method for generating random lines of credit identification digital signatures in the implementation of e-government affairs and e-commerce. Background technique [0002] In human society, there is a need to exchange interests between people. In the exchange of interests, vouchers with credit marks are often used, which is what we usually call "stamped documents" or "signed documents". [0003] The Chinese government stipulates that "documents need to be sealed to take effect". There are a large number of documents to be sealed in government work, and a large number of contracts to be sealed in business work of enterprises. [0004] Other countries also have such regulations, such as the use of a seal or emblem, or the use of a personal signature. [0005] In daily life, our common seal or emblem only represents a unit, institution or an individual. In use, this ki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32
CPCH04L9/3247H04L2209/60H04L9/3236
Inventor 吴建明
Owner 唐文凯
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