Improved AKA identity authentication system and method based on symmetric key pool and cross-relay

An identity authentication and key pool technology, applied in the field of private identity authentication and key negotiation, can solve the problems of key information leakage, insufficient security of important information transmission, inability to maintain the freshness of the key seed or the variable range, etc. The effect of improving safety

Active Publication Date: 2018-11-06
RUBAN QUANTUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. In group communication, there is usually only one or a small number of key seeds involved in group key negotiation, which cannot keep the freshness of key seeds or the range of change is small, and it is easy to be cracked
[0008] 2. At present, the encryption method between members and relays in the group mainly relies on the group key for encryption. There is no key for separate communication between the two parties, and the transmission of important information is relatively not sec

Method used

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  • Improved AKA identity authentication system and method based on symmetric key pool and cross-relay
  • Improved AKA identity authentication system and method based on symmetric key pool and cross-relay
  • Improved AKA identity authentication system and method based on symmetric key pool and cross-relay

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Embodiment 1

[0081] instructions

[0082] The scenario of this embodiment is as figure 1 As shown, in this figure, member R, member A0, member A1, member A2, member A3, member A4 and member C are all members of the same group, and member R is a relay unit. In this figure, the active party participating in the authentication is C, which contains the private key pool K C and group key pool K G ; The passive party participating in the authentication is R, which contains the private key pool K R and group key pool K G . The private key pool is a symmetric key pool between members and the server, and the group key pool is a symmetric key pool between members in the group. Member S is the key management server and also serves as the server. Both member C and member R belong to S, which contains the private key pool and group key pool K of all members. G. As a communication relay, member R has already conducted identity authentication and key negotiation with member S, so the communication...

Embodiment 2

[0156] instructions

[0157] like Figure 4 As shown, the identity authentication system of the present invention may include multiple key management servers, and different key management servers are located in different quantum network service stations. Each quantum network service station is in the quantum communication network, so quantum network service stations can share inter-station quantum keys through QKD, thus ensuring high information security.

[0158] like Figure 4 , in this figure, member R, member A0, member A1, member A2, member A3, member A4 and member C are all members of the same group, and member R is a relay unit. The active party participating in the authentication is C, which contains the private key pool K C and group key pool K G ; The passive party participating in the authentication is R, which contains the private key pool K R and group key pool K G ; Members S1 and S2 are key management servers, also serving as servers, member R belongs to S...

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Abstract

The invention discloses an improved AKA identity authentication system and method based on a symmetric key pool and a cross-relay. The AKA identity authentication system comprises a member, a relay and a server which participate in AKA identity authentication. The system is characterized in that the member, the relay and the server share a group key pool; the member and the relay are further respectively provided with a private key pool used for generating an authentication key, and the member and the relay independently share the private key pool with the server; the member and the relay share a corresponding pointer address in an AKA identity authentication process, and then a first negotiation key between the member and the relay is generated by combining the respective group key poolsof the member and the relay; the member and the server share the corresponding pointer address in the AKA identity authentication process, and then a second negotiation key between the member and theserver is generated by combining the respective authentication keys of the member and the server. According to the system and the method, the safety of communication can be further improved.

Description

technical field [0001] The invention relates to the technical field of secure communication, in particular to private identity authentication and key agreement based on group data network. Background technique [0002] Authentication, that is, identity authentication is the basic technology to achieve information security. The system checks the user's identity to confirm whether the user has access and use rights to certain resources, and can also perform identity authentication between systems. [0003] With the development of quantum computers, classical asymmetric encryption algorithms will no longer be safe, and symmetric key algorithms will become popular in both authentication and encryption and decryption fields. For example, the AKA mechanism, one of the commonly used authentication methods based on symmetric key algorithms in the field of mobile communications, is currently used. The full name of AKA is "Authentication and Key Agreement", that is, authentication an...

Claims

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Application Information

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IPC IPC(8): H04L9/32H04L9/08
CPCH04L9/0833H04L9/0844H04L9/0855H04L9/0891H04L9/3226H04L9/3271
Inventor 富尧钟一民余秋炜
Owner RUBAN QUANTUM TECH CO LTD
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