Key service method and key service device without central management and control
A service method and technology of central management, which are applied to secure communication devices and key distribution, can solve problems such as key management security problems and lack of quantum security, and achieve the effect of solving management security problems and having good application prospects.
Active Publication Date: 2020-03-06
成都量安区块链科技有限公司
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Problems solved by technology
[0002] Key distribution or negotiation is a key security technology in a secure communication system. The security of key negotiation based on classical cryptographic algorithms is based on the security of computational complexity, not quantum security; and, the centralized The key service management system needs to store and manage the user keys of all users, and there are key management security problems
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[0013] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, as a part of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0014] figure 1 A schematic diagram of a key service method without central control provided by an embodiment of the present invention is given, including the following steps:
[0015] Step 1: Client U and client V apply to server A and server B respectively and obtain a certain amount of user random number sequence (or multiple user key groups, for convenience, respectively denoted as {Kui} and {Kvj} , where i and j are natural numbers and are used for corresponding user key numbers); A and B respectively create service association lists associated with U and V, and A, B, U, and V respectively store corresponding service association lists; among them, The service association list consists ...
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The invention provides a key service method and key service device without central management and control, which comprises the following steps that: a client applies for a user key packet from a server and requests key service; the server acquires the associated exclusive-OR value, calculates the random number group of the associated exclusive-OR valueand the server and an exclusive-OR value of the target user key group of the client, and sends the exclusive-OR value to another server; the other server calculates an exclusive-OR value, associates the random number group with the exclusive-OR value of one user key group of the other client, and sends the exclusive-OR value to the client; and the client calculates the received exclusive-OR value and the exclusive-OR value of the corresponding user key group, and obtains a target user key group. The invention further provides a key service device without central management and control. The key service device without center control comprises a client device and a server device which are used for achieving the method. The method can solve the management security problem of a centralized key service system, and has a good application prospect in the field of quantum security cloud services.
Description
technical field [0001] The present invention relates to the technical field of key distribution / negotiation, in particular to a key service method and device without central control. Background technique [0002] Key distribution or negotiation is a key security technology in a secure communication system. The security of key negotiation based on classical cryptographic algorithms is based on the security of computational complexity, not quantum security; and, the centralized The key service management system needs to store and manage the user keys of all users, and there are key management security problems. Contents of the invention [0003] In order to solve the problems existing in the key distribution and service technology in the background technology, the present invention provides a key service method without central control, including: the client applies to the server for and obtains the user random number sequence (or multiple user key group), the server creates...
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IPC IPC(8): H04L9/08
CPCH04L9/0819H04L9/0852H04L9/0869H04L9/0894
Inventor 陈晖
Owner 成都量安区块链科技有限公司