WSN安全協(xié)議抗離線字典攻擊能力研究
發(fā)布時間：2018-10-20 10:17
【摘要】：隨著信息技術(shù)的高速發(fā)展,無線傳感器網(wǎng)絡(luò)應(yīng)用得到快速普及,涉及軍事、健康護理、智能家居、空間探索、城市交通以及機場、大型工業(yè)園區(qū)的安全監(jiān)測等領(lǐng)域。其中對于大多數(shù)的非商業(yè)應(yīng)用來說安全問題并非一個十分重要的問題,比如環(huán)境監(jiān)測、森林防火等應(yīng)用。而對于商業(yè)應(yīng)用中的無線安防網(wǎng)絡(luò)或者是軍事應(yīng)用中的部署于敵控區(qū)的軍事監(jiān)控網(wǎng)絡(luò)等應(yīng)用而言,對于數(shù)據(jù)的采樣以及數(shù)據(jù)的傳輸過程,甚至傳感器節(jié)點的位置分布也都是不可以讓無關(guān)人員或是敵方人員掌握,此時安全問題就變得尤為重要。本文主要從兩個方面來研究無線傳感器網(wǎng)絡(luò)的安全問題：安全協(xié)議的抗離線字典攻擊能力和機密性。安全協(xié)議抗離線字典攻擊能力的研究主要要關(guān)注兩個問題：一是安全協(xié)議具備抗離線字典攻擊能力的條件是什么；二是要考慮無線傳感器網(wǎng)絡(luò)的局限性,在抗離線字典攻擊能力不變的情況下如何降低資源的消耗。機密性論證我們是假定密鑰安全的情況下來展開的。本文構(gòu)建基于applied pi演算的安全協(xié)議形式化模型,致力于借助邏輯嚴密的形式化方法論證傳感器網(wǎng)絡(luò)安全協(xié)議的抗字典攻擊能力和機密性情況。本文的主要研究內(nèi)容如下：(1)安全協(xié)議抗離線字典攻擊能力論證。字典攻擊是一種針對密鑰的攻擊,在互聯(lián)網(wǎng)以及傳統(tǒng)無線網(wǎng)絡(luò)中較為常見,而在無線傳感網(wǎng)絡(luò)中相關(guān)的研究比較少。并且由于受自身在能耗以及計算能力等方面的限制,傳感器網(wǎng)絡(luò)更容易受到攻擊,因此針對無線傳感器網(wǎng)絡(luò)字典攻擊問題的研究是十分有必要的。本文從安全協(xié)議加密方案的安全屬性入手,以SNEP協(xié)議作為分析案例,借助applied pi演算中的靜態(tài)等價及觀察等價理論,分析論證不同強度的密鑰以及不同屬性的加密方案對安全協(xié)議抗離線字典攻擊能力的影響,進而得到傳感器網(wǎng)絡(luò)安全協(xié)議具備抗離線字典攻擊能力的條件,最后給出加密方案安全屬性的確定方法。(2)機密性論證。機密性是無線傳感器網(wǎng)絡(luò)眾多安全需求中最為核心的一項,網(wǎng)絡(luò)安全的重點通常首先就是要解決數(shù)據(jù)機密性問題,安全協(xié)議的機密性直接決定了網(wǎng)絡(luò)中傳輸數(shù)據(jù)消息的安全性。本文基于applied pi演算構(gòu)建SNEP協(xié)議機密性論證模型,將協(xié)議分成協(xié)議進程和用戶進程兩部分來分析,將協(xié)議的機密性轉(zhuǎn)換為協(xié)議的執(zhí)行過程是否具備不可區(qū)分性,進而用等價理論證明了協(xié)議的機密性情況。
[Abstract]:With the rapid development of information technology, wireless sensor network (WSN) applications have been rapidly popularized, involving military, health care, smart home, space exploration, urban transportation, airport, large-scale industrial park security monitoring and other fields. Safety is not a very important problem for most non-commercial applications, such as environmental monitoring, forest fire prevention and other applications. For applications such as wireless security networks in commercial applications or military surveillance networks deployed in enemy control areas in military applications, for data sampling and data transmission, Even the location distribution of sensor nodes can not be controlled by irrelevant or enemy personnel, so the security problem becomes more and more important. This paper mainly studies the security of wireless sensor networks from two aspects: the ability of resisting offline dictionary attacks and the confidentiality of security protocols. The research on the ability of security protocols to resist off-line dictionary attacks is mainly concerned with two problems: first, what are the conditions for security protocols to have the ability to resist offline dictionary attacks; secondly, the limitations of wireless sensor networks should be considered. How to reduce the consumption of resources when the ability to resist offline dictionary attacks remains unchanged. The confidentiality argument is conducted on the assumption that the key is secure. In this paper, a formal model of security protocol based on applied pi calculus is constructed, which is devoted to prove the ability of resisting dictionary attack and confidentiality of sensor network security protocol by means of logical formal method. The main contents of this paper are as follows: (1) the ability of security protocol to resist offline dictionary attacks is demonstrated. Dictionary attack is a key attack, which is more common in the Internet and traditional wireless networks, but there is less research on it in wireless sensor networks. Since sensor networks are more vulnerable to attack due to their limitations in energy consumption and computing power, it is necessary to study dictionary attacks in wireless sensor networks. This paper starts with the security attribute of the security protocol encryption scheme, takes the SNEP protocol as an analysis case, and makes use of the static equivalence and observational equivalence theory in applied pi calculus. This paper analyzes and demonstrates the influence of different key strength and encryption scheme of different attributes on the ability of security protocol to resist off-line dictionary attack, and then obtains the condition that the security protocol of sensor network has the ability to resist off-line dictionary attack. Finally, the method of determining the security attribute of encryption scheme is given. (2) confidentiality proof. Confidentiality is the core of many security requirements in wireless sensor networks. The focus of network security is usually to solve the problem of data confidentiality. The confidentiality of security protocols directly determines the security of the transmission of data messages in the network. Based on the applied pi calculus, this paper constructs the SNEP protocol confidentiality demonstration model, divides the protocol into two parts: the protocol process and the user process, and converts the confidentiality of the protocol into whether the protocol execution process is indistinguishable. Furthermore, the confidentiality of the protocol is proved by equivalent theory.
【學位授予單位】：福州大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP212.9;TN915.08
[Abstract]:With the rapid development of information technology, wireless sensor network (WSN) applications have been rapidly popularized, involving military, health care, smart home, space exploration, urban transportation, airport, large-scale industrial park security monitoring and other fields. Safety is not a very important problem for most non-commercial applications, such as environmental monitoring, forest fire prevention and other applications. For applications such as wireless security networks in commercial applications or military surveillance networks deployed in enemy control areas in military applications, for data sampling and data transmission, Even the location distribution of sensor nodes can not be controlled by irrelevant or enemy personnel, so the security problem becomes more and more important. This paper mainly studies the security of wireless sensor networks from two aspects: the ability of resisting offline dictionary attacks and the confidentiality of security protocols. The research on the ability of security protocols to resist off-line dictionary attacks is mainly concerned with two problems: first, what are the conditions for security protocols to have the ability to resist offline dictionary attacks; secondly, the limitations of wireless sensor networks should be considered. How to reduce the consumption of resources when the ability to resist offline dictionary attacks remains unchanged. The confidentiality argument is conducted on the assumption that the key is secure. In this paper, a formal model of security protocol based on applied pi calculus is constructed, which is devoted to prove the ability of resisting dictionary attack and confidentiality of sensor network security protocol by means of logical formal method. The main contents of this paper are as follows: (1) the ability of security protocol to resist offline dictionary attacks is demonstrated. Dictionary attack is a key attack, which is more common in the Internet and traditional wireless networks, but there is less research on it in wireless sensor networks. Since sensor networks are more vulnerable to attack due to their limitations in energy consumption and computing power, it is necessary to study dictionary attacks in wireless sensor networks. This paper starts with the security attribute of the security protocol encryption scheme, takes the SNEP protocol as an analysis case, and makes use of the static equivalence and observational equivalence theory in applied pi calculus. This paper analyzes and demonstrates the influence of different key strength and encryption scheme of different attributes on the ability of security protocol to resist off-line dictionary attack, and then obtains the condition that the security protocol of sensor network has the ability to resist off-line dictionary attack. Finally, the method of determining the security attribute of encryption scheme is given. (2) confidentiality proof. Confidentiality is the core of many security requirements in wireless sensor networks. The focus of network security is usually to solve the problem of data confidentiality. The confidentiality of security protocols directly determines the security of the transmission of data messages in the network. Based on the applied pi calculus, this paper constructs the SNEP protocol confidentiality demonstration model, divides the protocol into two parts: the protocol process and the user process, and converts the confidentiality of the protocol into whether the protocol execution process is indistinguishable. Furthermore, the confidentiality of the protocol is proved by equivalent theory.
【學位授予單位】：福州大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP212.9;TN915.08
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