node [style = rounded, shape = rect] start end;
node [style = rounded, shape = rect] PI [label="Parameter\nInstantiation"]
node [style = rounded, shape = rect] STC [label="m = STCr(y,H)"]
- node [style = rounded, shape = rect] ED [label="(y,H)= LSB(7 bits\nEdge Detection)"]
+ node [style = rounded, shape = rect] ED [label="(y,H)= LSB (7 bits\nEdge Detection)"]
node [style = rounded, shape = rect] decrypt [label="message=decryption(m)"]