Communication security protection method for 5G feeder terminals based on one-time pad

doi:10.3969/j.issn.2097-0706.2024.09.010

Abstract

Abstract:

A communication security protection method is proposed for feeder terminal units （FTU） in 5G environment to address the vulnerability of peer-to-peer communication between feeder automation（FA） terminals to illegal interferences and eavesdropping. This method utilizes a one-time one-pad encryption and decryption mechanism to enhance the security of FTU communication. Firstly，an encryption and decryption security chip is integrated into FTU，enabling two-way identity authentication with the security service mobile engine using pre-loaded keys. Upon successful authentication，the security service platform distributes a set number of root keys to the authenticated FA. Secondly，an improved Shamir key diffusion algorithm is employed by the encryption and decryption security chip to dynamically diffuse these root keys and generate new session keys. Finally，both feeder terminals engaging in peer-to-peer communication obtain unique session keys to their corresponding encrypted communication instances using SM4 encryption algorithm. Experimental results demonstrate that distinct session keys and initial vectors are used in different pairs of communicating feeder terminals，ensuring unpredictable encryption outcomes. This proposed method not only enhances the security of peer-to-peer communication among feeder terminals in 5G scenarios， but also reduces the computational costs compared to other methods suitable for high-speed and large-volume communications in 5G environments.

Key words: distribution automation, feeder terminal, one-time pad, 5G communication, communication security, key diffusion, smart grid

CLC Number:

TK01：TM73

WANG Luze, LIU Zengji, ZHOU Xia, ZHANG Tengfei. Communication security protection method for 5G feeder terminals based on one-time pad[J]. Integrated Intelligent Energy, 2024, 46(9): 86-96.

Figures/Tables 12

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项目	数据
明文	01 23 45 67 89 AB CD EF FE DC BA 98 76 54 32 10
会话密钥	4D 04 E5 5A 2D 14 53 A1 C8 B0 D9 26 A6 7F 4B 53
初始向量	1A E6 B7 38 51 79 60 9C C3 2D 47 8E F9 02 11 4D
密文	F7 79 3E 6D 24 57 12 51 18 0E 22 36 9D 5A B0 62
解密结果	01 23 45 67 89 AB CD EF FE DC BA 98 76 54 32 10

项目	数据
明文	01 23 45 67 89 AB CD EF FE DC BA 98 76 54 32 10
会话密钥	4D 7E E9 30 7E 0A 4F 24 9A 60 B6 AF 72 63 BF AA
初始向量	52 A8 F3 61 B7 20 46 1D 7C 86 9A 5E 3C 91 74 D9
密文	0A 3D 12 60 14 7F 39 60 67 80 12 5C 5F 61 62 56
解密结果	01 23 45 67 89 AB CD EF FE DC BA 98 76 54 32 10

项目	数据
明文	01 23 45 67 89 AB CD EF FE DC BA 98 76 54 32 10
会话密钥	14 13 A7 F5 32 8A 06 3E 7A 42 0C 2D 5E 5E 89 E7
初始向量	9B D7 3F 56 28 76 C1 0E A9 F4 2B 15 8C E0 53 9D
密文	37 42 19 7E 7B 94 8F 57 07 35 4F 7A AD 57 5F 70
解密结果	01 23 45 67 89 AB CD EF FE DC BA 98 76 54 32 10