3224

3141

كارشناسي ارشد

﴿ مخابرات ﴾

اصفهان : دانشگاه صنعتي اصفهان ، دانشكده برق و كامپيوتر

1385

ده ، 110 ، [II] ، ص : مصور ، جدول ، نمودار

ص . ع : به فارسي و انگليسي

محمد دخيل عليان

مهدي برنجكوب

مهندسي برق و كامپيوتر

ID3141

به فارسي و انگليسي : قابل رويت در نسخه ديجيتالي

Abstract Nowadays collaborative and group oriented applications are becoming popular Group communication services such as chat news on line games and simulation servicesthat involve communication over open networks attract many attentions The securitychallenge for multicast is in providing an effective method for controlling access to thegroup and its information A primary method of limiting access to information is throughencryption So the security of the group is related to the security of its key and keymanagement protocols support the security of it In fact a group key management protocolsupports protected communication between group s members Group key management isone of the basic building blocks in securing group communication Key management hasan important role in access control to group key and as a result in group communication Using one desirable group key management protocol not only provide group security butalso will enable it to adapt itself with events that changes the number of group members Agroup key management protocol helps to ensure that only members of a secure group cangain access to group data by gaining access to group keys Group key managementprotocols are divided into three classes that are centralized group key managementprotocols decentralized group key management protocols and distributed group keymanagement protocols In this thesis distributed group key management protocols arediscussed Their characteristic is that formation of group key doesn t rely on one specialentity In these protocols the group key is function of all member contribution At the end one new distributed group key management protocol is suggested and tried to improve that

محمد دخيل عليان

مهدي برنجكوب