Research Article
Adaptive Secure Cross-Cloud Data Collaboration with Identity-Based Cryptography and Conditional Proxy Re-Encryption
Table 1
Comparison of computation in secure data collaboration.
| | Schemes | Enc | ReEnc | Dec-1 | Dec-2 |
| | IBBPRE [6] | Tpair+(Nu+5)Texp | (3Nu+3)Texp | 2Tpair+NuTexp | 3Tpair+Texp |
| | IBCPRE [7] | Tpair+4Texp | 2Tpair | Tpair | 2Tpair |
| | IBBCPBRE [8] | (3Nu+8)Texp | 2Tpair+NuTexp | 2Tpair+NuTexp | 3Tpair+NuTexp |
| | Our scheme | IBE | 9Texp | Type-I | 2Tpair | Tpair | 2Tpair | | Type-II | Tpair | | IBBE | (3Nu+10)Texp | Type-III | 3Tpair+(Nu+1)Texp | 2Tpair+NuTexp | 3Tpair+NuTexp | | Type-IV | 2Tpair+NuTexp |
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