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Secure Data Retrieval for Decentralized

Disruption-Tolerant Military Networks

ABSTRACT

This paper considers an attribute-based secure data retrieval scheme using CP-ABE for decentralized DTNs where multiple key authorities manage their attributes independently.  Immediate attribute revocation enhances backward/forward secrecy of confidential data by reducing the windows of vulnerability. Key escrow problem is resolved by an escrow-free key issuing protocol that exploits the characteristic of the decentralized DTN architecture proposed a decentralized approach; their technique does not authenticate users. We demonstrate how to apply the proposed mechanism to securely and efficiently manage the confidential data distributed in the disruption-tolerant military network.

EXISTING SYSTEM	PROPOSED SYSTEM
EXISTING CONCEPT:- In existing system, ABE schemes are constructed on the architecture where a single trusted authority has the power to generate the whole private keys of users with its master secret information.   Thus, the key escrow problem is inherent such that the key authority can decrypt every ciphertext addressed to users in the system by generating their secret keys at any time.	PROPOSED CONCEPT:- A secure data retrieval scheme using CP-ABE for decentralized DTNs where multiple key authorities manage their attributes independently. Decentralized CP-ABE schemes in the multiauthority network environment. Attribute-based secure data retrieval scheme using CP-ABE for decentralized DTNs.
EXISTING ALGORITHM :- Attribute based encryption.	PROPOSED ALGORITHM :- Ciphertext policy attribute based encryption (CP-ABE).
ALGORITHM DEFINITION:- To improve upon the scalability of the above solutions, one-to-many encryption methods such as ABE can be used	ALGORITHM  DEFINITION:- In a ciphertext policy attribute-based encryption scheme, each user’s private key is associated with a set of attributes representing their capabilities,
DRAWBACKS:- One disadvantage of this fully distributed approach is the performance degradation. Key escrow problem in a multiauthority system.	ADVANTAGES:- Can be securing data retrieval decentralized DTN enhance CP-ABE. Using secret keys to decrypt the stored information.