Broadcast Proxy Reencryption Based on Certificateless Public Key Cryptography for Secure Data Sharing

Table 1

Comparison of the security requirements.

	Bilinear pairing	Key escrow problem	Receiver anonymity	Re-key-generation
Wang and Yang [41]	Used	Insecure	Offer	KGC/BC
Maiti and Misra [37]	Used	Insecure	Offer	Sender
Sun et al. [38]	Used	Insecure	Offer	Sender
Yin et al. [39]	Used	Insecure	Offer	Sender
Chunpeng et al. [40]	Used	Insecure	Offer	Sender
Proposed scheme	Not used	Secure	Offer	Sender