Table 1 Model comparison.

From: An efficient lattice-based integrated revocable identity-based encryption

Revocation model

The size of secret key

KGC’s workload

RL managers

Secret key

Periodic workload

Indirect4

\(\alpha\)

\(\alpha\)

\(\beta\)

KGC

Wang et al.’s12

\(\alpha\)

\(\alpha\)

\(\approx 0\)

KGC

Direct19

\(\alpha\)

\(\alpha\)

–

Encryptor

Server-aided20

O(1)

O(1)

\(\beta\)

KGC

Integrated

O(1)

O(1)

\(\approx 0\)

KGC

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