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

Table 5

Result improvements of the proposed scheme in block(s) modification operations as compared to [51].

Number of blocks	51200 × 50 (%)	102400 × 50 (%)	153600 × 50 (%)	204800 × 50 (%)	256000 × 50 (%)	Average (%)
1	75.56	77.35	78.6	79.51	80.2	78.24
2	69.64	70.1	70.52	70.89	71.18	70.47
3	61.89	62.25	62.74	63.09	63.69	62.73
4	53.12	53.61	54.35	55.47	56.16	54.54