[Retracted] A Lightweight Proxy Re-Encryption Approach with Certificate-Based and Incremental Cryptography for Fog-Enabled E-Healthcare

Table 7

Result improvements of proposed scheme in block(s) modification operations as compared to [64].

Number of blocks	51200 × 50 (%)	102400 × 50 (%)	153600 × 50 (%)	204800 × 50 (%)	256000 × 50 (%)	Average (%)
1	24.21	25.09	25.87	26.34	26.83	25.67
2	23.01	23.67	24.22	24.79	25.31	24.2
3	21.47	21.89	22.78	22.56	22.31	22.2
4	19.09	19.76	20.01	20.43	20.32	19.92