Ziar, R., 		Irfanullah, S., 		Khan, W., & 		Salam, A.
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 Privacy Preservation for On-Chain Data in the  Permission less Blockchain using Symmetric Key Encryption  and Smart Contract.
<em>Mehran University Research Journal Of Engineering And Technology, 40</em>(2), 305 - 313.
doi:10.22581/muet1982.2102.05