A Study of Practical Proxy Reencryption with a Keyword Search Scheme considering Cloud Storage Structure
Table 1
Calculation efficiency analysis.
Chen’s scheme
Proposed scheme
Exponential operation
Pairing operation
Hash operation
Multiply operation
Comparison operation
Exponential operation
Pairing operation
Hash operation
Multiply operation
Comparison operation
Kgen
Enc
1
1
RKGen
2
2
ReEnc
2
2
2
1
TGen
1
1
1
3
Test
1
1
*
1
1
Dec
1
1
1
1
1
: number of comparison operation on existing search scheme , : number of keyword on document, : number of all documents on cloud storage, : number of user.
