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AKA identity authentication system and AKA identity authentication method based on symmetric key pool and relay communication

A technology for identity authentication and relay communication, applied in the fields of private identity authentication and key negotiation, it can solve the problems of easy cracking, inability to maintain the freshness or variable range of the key seed, and weak confidentiality, etc. True randomness and security, increased capacity and replaceability, and improved high security effects

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 secure enough.
[0009] 3. The random number parameters in key generation in the AKA mechanism are exposed, which will increase the risk of the negotiated key being cracked
[0010] 4. Most of the messages sent and received in the authentication are sent in plain text or encrypted with a weak encryption method, which is easy to leak key information and reduce the security of authentication

Method used

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  • AKA identity authentication system and AKA identity authentication method based on symmetric key pool and relay communication
  • AKA identity authentication system and AKA identity authentication method based on symmetric key pool and relay communication
  • AKA identity authentication system and AKA identity authentication method based on symmetric key pool and relay communication

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Embodiment 1

[0067] instructions

[0068] 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.

[0069] 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 .

[0070] 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.

[0071] 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 .

[0072] As a communication relay, member R has performed identity authentication and key negotiation with ...

Embodiment 2

[0131] instructions

[0132] Such as 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.

[0133] Such as 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 belong...

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Abstract

The invention discloses an AKA identity authentication system and an AKA identity authentication method based on a symmetric key pool and relay communication, the AKA identity authentication system comprises members joining in AKA identity authentication, a relay and a server, wherein the members, the relay and the server share a group key pool, the members and the relay respectively use a key seed from the group key pool and combines with a random parameter to calculate out a negotiation key between the members and the relay in an AKA identity authentication process, wherein the random parameter is obtained correspondingly in the group key pool through an indexed address A, and in the AKA identity authentication process, the relay acquires the indexed address A through the server, and themembers obtains a parameter for generating the indexed address A from the server via the relay, and then generate the indexed address A through the parameter. With the system and the method providedby the invention, security of communication can be improved further.

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 KeyAgreement", that is, authentication and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L9/32
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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