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Reference.org
Transparent decryption
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<p> Transparent decryption is a method of <a href="/facts/Decryption/16q29Fdv">decrypting data</a> which unavoidably produces evidence that the decryption operation has taken place. The idea is to prevent the covert decryption of data. In particular, transparent decryption protocols allow a user Alice to share with Bob the right to access data, in such a way that Bob may decrypt at a time of his choosing, but only while simultaneously <a href="/facts/Tamper-evident_technology/VICY21Pt">leaving evidence</a> for Alice of the fact that decryption occurred. Transparent decryption supports <a href="/facts/Privacy/C269YalS">privacy</a>, because this evidence alerts data subjects to the fact that information about them has been decrypted and disincentivises data misuse. </p>