Certificateless Group to Many Broadcast Proxy Reencryptions for Data Sharing towards Multiple Parties in IoTs

Table 2

Comparison of the computation efficiency.

	Enc	Re-Key gen	Re-Enc	Dec-2	Group agreement
Wang and Wang [53]					—
Maiti and Misra [54]					—
Sun et al. [55]					—
Yin et al. [56]					—
Chunpeng et al. [57]					—
Kim et al. [51]					—
Proposed scheme

: computation time of modular multiplication operation; : computation time of ECC multiplication operation; : computation time of ECC point add operation; : computation time of exponent operation; : computation time of bilinear pairing operation.