Encrypt the Parameters sent from SSRS and Decrypt and use the same in ASp.net

Hello All , 
I have  a SSRS report where in the action I use 
"javascript:void(window.open('','_blank'))") for passing the Parameters and open a new webpage . In that New webpage in ASP.Net I am capturing those parameters using Request.Querystring function and feeding it to another ssrs report. Right now when the user clicks the ssrs report he is able to see the parameters passed in the URL . How can i encrypt the parameter value and also Decrypt it and read in Asp.net ?????? IS this possible 

Thanks,
Bala