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.
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[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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Abstract
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