Authentication system realizing method supporting exclusive control of digital signature key

A digital signature and authentication system technology, applied in the field of information security, can solve problems such as not being able to meet the digital signature key, and achieve the effects of simple scheme, wide application range, and convenient operation and use
CN102170356AInactive Publication Date: 2011-08-31北京联合智华微电子科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京联合智华微电子科技有限公司
Publication Date
2011-08-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of information security, in particular to an authentication system supporting exclusive control of a digital signature key on the basis of a combined public key. A seed key consisting of multiple key sections is constructed and comprises a seed public key and a seed private key; by using a user identifier, a key management centre generates a user identifier private key through the seed private key and writes the user identifier private key into a key device; the key device starts an initialization program to automatically generate a composite private key for digital signature and a random public key digitally signed by the user identifier private key while used for the first time; and the composite private key and the digitally signed random public key are written into a secure storage area of the key device, and the user identifier private key and process data are destructed. The digital signature key is automatically produced and controlled by the user so that regulations of relevant laws are satisfied; furthermore, the exclusive control of the digital signature key by the user is assured through a third party of register link; and one-way key exchange, key escrow and key recovery are realized through providing the identifier key for the key exchange.
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Description

Technical field

[0001] The present invention relates to the technical field of information security, in particular to a method for implementing an authentication system based on a combined public key (CPK) supporting exclusive control of a digital signature private key. Background technique

[0002] As the network and information technology gradually enter people’s production and life, protecting the authenticity, security, and responsibility (non-repudiation) of information has become a common concern for the government and society. To solve the above problems, authentication systems are needed to provide support. Around the construction of the authentication system, two major technical systems have been formed. One is certificate authentication based on traditional public key cryptography, such as public key infrastructure (PKI) authentication system, and the other is identification authentication based on public key cryptography for identification, such as combined public key c...

Claims

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