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Mobile Ad-hoc Network is infrastructureless network supported by no fixed trusted infrastructure. The packets had a chance to drop or hacked by eavesdropper during transmission. So, encryption method is required for sending and receiving packet in secret manner. In this approach, the block and key size had been increased by 256 bits. When compared to Rijndael algorithm, it was more secure and effective. To attain security goals like: authentication, integrity, non-repudation, privacy, a secret key was necessary to be shared between the sender and receiver. For data communication, the authors use MAC address for exchanging packet with encrypted key exchange system.
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