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IBE (Identitiy-Based Encryption)  from the   Weil Pairing ,[object Object],[object Object]
Identity Based Encryption
Identity Based Encryption ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Protocol framework (contd.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Identity-Based Encryption M encrypted using bob@iitm.ac.in ,[object Object],Private key for  [email_address] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Applications  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Applications (Contd.) ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Types of IBE ,[object Object],[object Object],[object Object],[object Object],[object Object]
Bilinear maps and the  Bilinear Diffie-Hellman Assumption: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Basic Ident ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Steps of Basic Ident ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Elliptic Curve ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Divisor : Zero and Pole  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Definition ,[object Object],[object Object]
Elliptic Curve Group over Real Numbers ,[object Object],[object Object],[object Object],[object Object],[object Object]
A Deeper Understanding  ,[object Object],[object Object],[object Object],[object Object]
Elliptic Curve Addition: A Geometric Approach ,[object Object],[object Object]
Adding the points P and -P
Doubling the point P
Weil Pairing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Properties of Weil Pairing  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computing The Weil Pairing  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computations ( Contd.) :  ,[object Object],[object Object],[object Object],[object Object]
Miller’s algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object]
Basic idea ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
Escrow El-Gamal Encryption ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Big  Picture encryption Alice Bob y Bob , cert (y Bob , Bob) (a,b)  =  (…) (a,b)
Escrow ElGamal Encryption (Cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Crypto cs36 39