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Table 2 Correspondence between leaf node and attribute index

From: Ciphertext-policy attribute-based encryption with hidden sensitive policy from keyword search techniques in smart city

Leaf nodes of \(\widehat{{\mathcal {T}}_2}\)

Hash value of the index of the corresponding attribute

\(y_1\)

\(H_{j_1}\)

\(\vdots\)

\(\vdots\)

\(y_t\)

\(H_{j_t}\)