發(fā)布時(shí)間：2018-04-04 19:56

  本文選題：車聯(lián)網(wǎng)　切入點(diǎn)：屬性基加密　出處：《計(jì)算機(jī)研究與發(fā)展》2017年11期

【摘要】：車載自組織網(wǎng)絡(luò)(vehicular ad hoc network,VANET)(也稱車聯(lián)網(wǎng))數(shù)據(jù)安全共享通常采用群加密方式,高速移動(dòng)的車載終端給群組構(gòu)建和群密鑰管理帶來(lái)困難.密文策略屬性基加密(ciphertext-policy attribute-based encryption,CP-ABE)為車聯(lián)網(wǎng)通信安全帶來(lái)了新的解決方案,但是傳統(tǒng)的CPABE方案解密計(jì)算復(fù)雜度高,屬性撤銷需要整個(gè)密文進(jìn)行全部更新,策略樹(shù)的構(gòu)建不夠靈活,導(dǎo)致在車聯(lián)網(wǎng)中的應(yīng)用受限.為了解決上述問(wèn)題,圍繞車聯(lián)網(wǎng)云存儲(chǔ)數(shù)據(jù)安全分享,設(shè)計(jì)可撤銷動(dòng)靜態(tài)屬性的屬性基加密方案.將動(dòng)態(tài)屬性和靜態(tài)屬性分開(kāi)管理,構(gòu)建組合策略樹(shù),引入解密代理將高復(fù)雜度的屬性基解密過(guò)程的主要部分外包到服務(wù)端,車輛終端通過(guò)中央和本地認(rèn)證中心進(jìn)行屬性撤銷和動(dòng)態(tài)屬性更新.可撤銷動(dòng)靜態(tài)屬性的車聯(lián)網(wǎng)屬性基加密方案是安全的,在空間和加解密時(shí)間復(fù)雜度上較傳統(tǒng)CP-ABE算法具有優(yōu)勢(shì),實(shí)驗(yàn)還分析了車載終端解密、屬性撤銷和系統(tǒng)并發(fā)等性能.
[Abstract]:Group encryption is usually used in the data security sharing of vehicular ad hoc network (VANETN). The high-speed mobile vehicle terminal brings difficulties to group construction and group key management.Ciphertext policy attribute base encryption (ciphertext-policy attribute-based encryption CP-ABE) has brought a new solution to the security of vehicle network communication. However, the traditional CPABE scheme has high computational complexity in decryption, the attribute revocation needs the entire ciphertext to be completely updated, and the construction of the policy tree is not flexible.This results in limited application in vehicle networking.In order to solve the above problem, an attribute based encryption scheme is designed to undo the dynamic and static attributes around the secure sharing of vehicle network cloud storage data.The dynamic and static attributes are managed separately, the composite policy tree is constructed, and the decryption agent is introduced to outsource the main part of the high complexity attribute base decryption process to the server.The vehicle terminal carries on the attribute revocation and the dynamic attribute update through the central and the local certification center.The attribute base encryption scheme with detachable dynamic and static attributes is secure and has advantages over the traditional CP-ABE algorithm in space and encryption and decryption time complexity. The performance of vehicle terminal decryption, attribute revocation and system concurrency are also analyzed in the experiment.
【作者單位】： 桂林電子科技大學(xué)廣西云計(jì)算與大數(shù)據(jù)協(xié)同創(chuàng)新中心;桂林電子科技大學(xué)認(rèn)知無(wú)線電與信息處理教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(61661015,61572148) 認(rèn)知無(wú)線電與信息處理教育部重點(diǎn)實(shí)驗(yàn)室基金項(xiàng)目(CRKL160101) 廣西云計(jì)算與大數(shù)據(jù)協(xié)同創(chuàng)新中心基金項(xiàng)目(YD16801)~~
【分類號(hào)】：TN918.4;U495

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