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EXISTING SYSTEM

PROPOSED SYSTEM

EXISTING CONCEPT:-

In this existing system can’t send the file securely. generalizations of theseembeddings from  to proper subgroups GT are not known, in particular if the cofactor h is large

In this system can’t revisit existing files, we have already noted, no efficientembedding is currently known in the asymmetric pairingsetting

PROPOSED CONCEPT:-

In the proposed system a variant of Gentry’s scheme that uses a symmetric-key authenticated encryption scheme.

(i) INITIALIZATION and (ii) TRANSFER. During INITIALIZATION,S generates some public information, masks the messages in Musing the corresponding secret information, and then sends the masked messages together with the public information to R

EXISTING TECHNIQUE:-

AOT protocol Methods

PROPOSED ALGORITHM:-

Computing the Miller Function Value

TECHNIQUE DEFNITION:-

Efficient selective identity –based encryption is only indentity the data does’t identify the revisit data.

A sender S and a receiver R. The sender S has a

Set of secret messages. The receiver adaptively obtains messages one at a time in such a way that S does not learn any information about which messages are accessed while R does not learn any information about themessages not yet accessed

TECHNIQUE DEFNITION:-

construct symmetric pairings for their famous identity-based encryption scheme

In this specification for identity-based encryption

We note that the adversary need only find the ratio R ofthe faulty pairing values and not the values themselves

DRAWBACKS:-

 We can’t sent the file securely

can’t revisit the files

ADVANTAGES:-

The discrete logarithm problem in small characteristic finite fields

Here we can Revisit the file