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A mixnet is a multi-stage system that accepts encrypted messages as its input and generates a new altered output while exploiting cryptographic operations and repeated permutations to ensure the untraceability between the input and the output messages. Based on the employed cryptographic operations, the main types of mixnets and their variants are: decryption, re-encryption, univer-sal re-encryption and hybrid mixnets. Anonymous channel like mixnet is essential where the privacy of individual opinion is crucial.

Like any other country in the world, the housing sector plays vital roles both in the context of the economy of Bangladesh and serving the fundamental human right of shelter. Apart from providing physical shelter, housing may have significant impact on the lives of the dwellers in terms of skills enhancement, income generation, increased security, health, self-confidence and human dignity. Bangladesh, like many other developing countries, faces an acute shortage of affordable housing both in the urban and rural areas. Moreover, housing affordability is being eroded by poor land administration...