Scheme | Encryption | Re-encryption | Decryption | Re-decryption |
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Ref. [47] | Tp+(3|l|+6)TE | (2|I|+3)TP | (2|I|+3)TP+TE | (2|I|+4)TP+TE |
Ref. [48] | (6|l|+3)TE | (8|I|+3)TP+2TE | (4|I|+2)TP | 2TP+(4|I|+1)TE |
Ref. [49] | Tp+(3|l|+2)TE | (4|I|+9)TP | (2|I|+5)TP+(|I|+1)TE | 3TP+2(|I|+1)TE |
Our scheme | Tp+(3|l|+1)TE | (3|I|+1)TP | (3|I|+1)TP | 6TP |