Critical Thinking

V. the environment. We use Java as the

V.
IMPLEMENTATION

For
developing secure data sharing in cloud using RSIB encryption,we use NetBeans
as the environment. We use Java as the language for developing our software.
For storing the details we use Microsoft SQL Server. It is also a Microsoft
product which acts as database. Implementation of RS-IBE system consist of 4
modules namely data provider module, user group, key provider and storage
server. User module is for user. It contains user registration, login, upload
file, download file. It also contains AES encryption. The user (data provider)
can register by entering user name, email-id, password, confirm password,
mobile number. User (data provider) can login by entering the user name and
password which was already registered. After login user can view a form which
have the following tabs-action, start, stop, restart, upload, add user. By
clicking the upload button, upload text and upload multimedia options. For
uploading a multimedia click on the browse tab select the file from directory,
enter the file name and click the upload button. After successfully uploading
the file, the file get encrypted and store in storage media(cloud). When
clicking add user tab, data provider can add user group whose which the data
provider had wish to see the uploaded data. The user can change password by
filling the change password form which contains current password, new password,
confirm password. The uploaded file by the client is encrypted and decrypted
using AES algorithm,user revocation is performed by using KU Nodes algorithm.

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KUNode
algorithm

1
KUNodes(BT, RL, t) 1: X,Y???

2:
for all (?i,ti)?RL
do

3:
if ti?t then

4:
Add Path(?i) to X

5:
end if

6:
end for

7:
for all ??X
do

8:
if ?l?/X then

 9: Add ?l to Y

10:
end if

11:
if ?r?/X then

12:
Add ?r to Y

13:
end if

14:
end for

15:
if Y=? then

 16: Add the root node ? to Y

17:
end if

18:
returnY

VI. CONCLUSION

Cloud computing is a
great convenience for people. Particularly, it perfectly matches the increased
need of sharing data over the Internet. In this application, to build a
cost-effective and secure data sharing system in cloud computing, we proposed a
notion called RS-IBE such that a revoked user is  prevented from accessing previously shared
data, as well as subsequently shared data. Furthermore, a complete construction
of RS-IBE is presented. The proposed RS-IBE scheme is proved adaptive-secure in
the standard model, under the decisional ?-DBHE assumption. The comparison
results demonstrate that this scheme is more preferable in terms of efficiency
and functionality, and thus is more feasible for practical applications

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