sap solution integration kit bo xi 3.1 edge

hello

I am beginer in bo ,I installed BOxi 3.1 edge prof,I want to create connection in univers to sap bw.

after reading i found we must install sap integration kit.

I HAVE QUESTION:

for connecting to sap with bo i Must install sap integration kit or we can connect sap bw without it?

I found it in sap bo folder and try to install it but it needs  key .....

I don't have any key,hoe to can find it?