پديد آورنده :
نيك انديش، سحر
عنوان :
امضاي مشخصه-مبنا با كنترل چندگانه در ساختار بلوكي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
رياضي كاربردي
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان
صفحه شمار :
هشت، 82ص. : مصور
استاد راهنما :
مرتضي اسماعيلي
توصيفگر ها :
رمزنگاري مشخصه مبنا , امضاي مشخصه مبنا با كنترل چندگانه , زنجير بلوكي
استاد داور :
علي زاغيان، رضا سبحاني
تاريخ ورود اطلاعات :
1399/09/24
تاريخ ويرايش اطلاعات :
1399/10/03
چكيده انگليسي :
Attribute Based Multiple Authorities Signature Scheme In Blockchain Structures SAHAR NICKANDISH s nikandish@math iut ac ir September 19 2020 Master of Science Thesis in Farsi Departement of Mathematical Sciences Isfahan University of Technology Isfahan 84156 8311 IranSupervisor Dr Morteza Esmaili mesmaeili@iut ac ir2000 MSC 05C25 20B25 05C60Keywords Attribute based encryption Multi authority attribute based signature Blockchain Abstract This M Sc thesis is based on the following papers Secure attribute based signature scheme with multiple authorities for R G H S Q Z D Z Blockchain in electronic health records systems IEEE Access vol 776 no 99 Mar 2018 pp 1 12 In real life one requires signatures to be from people who should possess specific atribtutes For example Alicemight wants a document to be signed by an employee in Bob company who possess specific attributes For thispurpose a multi authority attribute based signature is introduced that only the signature of the person who has thedesired pecific attributes is confirmed The multi authority attribute based signature is one of the applications of attribute based encryption In this signature the identity of the signer is confirmed based on its attributes each of which is under the supervision of a authority In this scheme in addition to preserving the personal identity of the signer the attributes that he used in signing hismessage are also hidden Since a blockchain structure has significant features such as preserving the identity of the signer decentralized struc ture and data retention without a secure data center in this dissertation we try to introduce multi authority attribute based signature in the blockchain structure and show its application in the electronic health registration system In this scheme data is stored in a block without the need for a secure data center The user also gains the ability toperform certain tasks such as receiving or sending messages or accessing information sources based on his atribtutes each of which is supervised by a authority By providing this signature in a blockchain environment conditions arecreated in which a user who has certain attribute can access the information of each block in a peer to peer networkwithout the need for an intermediate person
استاد راهنما :
مرتضي اسماعيلي
استاد داور :
علي زاغيان، رضا سبحاني
