Table 2 Comparison of storage costs of four encryption algorithms.
Method | Public parameter size | Private key size | Cipher-text size | Storage cost |
|---|---|---|---|---|
BTA-AHEA | 12 | 4 + 2 \(\left| S \right|\) | 3 \(\left| h \right|\)+ 1 | 0 |
FHE | 8 | 7 + 3 \(\left| S \right|\) | \(\left| h \right|\)+ 4 | None |
HE | 8 | 5 + 2 \(\left| S \right|\) | 3 \(\left| h \right|\)+ 4 | None |
ABE | \(\left| l \right|\)+ 6 | 8 + \(\left| S \right|\) | 2 \(\left| h \right|\)+ 5 | None |
