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. 2019 Jan 15;19(2):326. doi: 10.3390/s19020326
Algorithm 1 Data Encryption.
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    functionEncryption (data_file)

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        if user confirm data preservation over blockchain then

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            Generate a symmetric key ksym

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            C←Encryptsym (data_file,ksym)

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            Ck←Encryptasym(ksym,rkpub)

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        else

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            Do nothing

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        end if

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    end function