Privacy-Preserving -Means Clustering under Multiowner Setting in Distributed Cloud Environments

Algorithm 1

SCT.

Require:  EW has , , and ; AW has , , and .

 () EW:

   (a) Generate a random number: , s.t., ;

   (b) Compute ;

   (c) Send to AW;

 () AW:

   (a) Decrypt ;

   (b) Encrypt ;

   (c) Send to EW;

 () EW:

   (a) Compute ;