Abstract:
With improved technology, every user now generates huge amount of data that requires ever
increasing amount of space to store it. It is not economical for the users to purchase new storage
device every time. As a remedy to this problem di erent service provider o ers storage space
that can be utilized by the users. Cloud computing also provides a similar functionality to the
users for storing their data over the Internet. The invention of cloud computing has ful lled
the need for extra storage space but at the same time it has also lead to increased concerns
regarding security of data stored over the Internet.
The responsibility of the security of this huge amount of data lies with the service provider, but
there may arise a situation where user may not trust the service provider due to the sensitivity
of data. So there is a need of a technique which provide users a level of trust and security.
In Document security solution (DSSol), we have tried to deal with such a situation, where we
provide protection against adversary which can also be the service provider itself. We have used
the Steganographic le system along with encryption to protect the document uploaded over
the Google Docs from any security breach. The design encrypts the data les to be uploaded
and divides them in equal sized chunks which gets uploaded along with some additional dummy
chunks to the Goggle Docs. This provides unobservability, tra c analysis resistance and thereby
providing protection against attacks possible due to tra c analysis and usage patterns.
