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Symbolism stamping method based on public key system

A public key system and symbolic technology, applied in the fields of cryptography and computer technology, which can solve problems such as discrete logarithm difficulties

Inactive Publication Date: 2009-04-22
苏盛辉 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0024] 2.9 The Discrete Logarithm Problem

Method used

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Embodiment Construction

[0137] The issuing unit U needs to establish its own secure www website or website, and needs to choose a suitable public key digital signature system. At present, the system described in 200610145647.9 can be regarded as a choice, even, it can be said to be the only choice.

[0138] Different from the application of other public key digital signature systems, in this scheme, the generation of the key pair is done by the issuing unit U itself. The private key is stored offline and can only be known by oneself; the public key is logically stored online and can be accessed in real time by the seal verification component on the server side.

[0139] The four components in this scheme: database creation component, key generation control component, symbolic seal stamping component, and symbolic seal verification component can be realized by logic circuit chip plus database management system or programming language plus database management system. See Section 3.2.2, Section 3.2.3, S...

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Abstract

The invention discloses a symbol seal method based on a public key system, belonging to the cryptographic technology and computer technology field; the invention leads the unforgeability of a seal to be corresponding to the security of a public key digital signature system, comprising four parts: database creating of symbolized seal, key controlling, seal stamping and seal authentication, wherein, the database creating part is used for creating three relevant databases, the key controlling part is used for generating and managing a pair of private keys and public keys of a document (certificate) issuing unit, the seal stamping part is used for the document (certificate) issuing unit to generate a 64 system short signature character string to the Hash summary of a document or a certificate and stamp a seal image, and the seal authentication part is used for a document (certificate) receiving unit to judge the authenticity of source of the document or the certificate by the short signature character string; the method has low cost and easy operation, not only retains the appearance style of the traditional seal, but also greatly improves the security thereof, and can be widely applied in the issuing and transferring business of various paper documents or certificates, and electronic version documents or certificates of various units.

Description

(1) Technical field [0001] The symbolic seal technology based on a public key digital signature system or scheme belongs to the fields of cryptography and computer technology. (2) Background technology [0002] The seal, whether it is a personal seal or a unit seal, has a long history in my country as a kind of identity certificate or a symbol of power. [0003] How to prevent the forgery of seals, at present, everyone mainly makes a fuss about physical methods, chemical methods and photoelectric methods. For example, choose better metal materials and high-precision font carving, and keep the original seal in the verification unit; another example, Use computers and laser printers to strengthen the management of the generation and use of seals; for example, use special inks with anti-counterfeiting properties when stamping. However, these methods are still limited in anti-counterfeiting. [0004] With the development of multivariate and lightweight cryptography, today, we ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L29/06G06Q10/00G06Q10/10
Inventor 苏盛辉蔡吉人李健
Owner 苏盛辉
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