Identity Based Encryption and Broadcast using Hybrid Cryptographic Techniques

The quick advancement of cloud computing has brought in an increment in the number of businesses and people who are using the public cloud to store and exchange data. In order to maintain the privacy of the data stored, the owner of the data encrypts the data. This enables the data to be accessible to only specific users who can decrypt it and are authorized to do so. A severe difficulty occurs when this encrypted data has to be shared in a vehicular ad-hoc network with people. To address this problem, we have introduced a hybrid protocol which includes identity based encryption which uses public key cryptography and for broadcast using LCM which uses symmetric key cryptography. We have designed a more efficient and lightweight protocol based on Bilinear maps and also proved its correctness.