Q8: Suppose {D_(0)}_(n),{D_(1)}_(n),{D_(2)}_(n) are all computationally indistinguishable. Let's define {D_(0)^(')}_(n) in the following way:
{D_(0)^(')}_(n) first samples a value r->D_(0), and suppose r can be parsed as r_(1)||r_(2), then output of {D_(0)^(')}_(n) is r_(1)||r_(1) (taking the first half of r and repeat it)
Similarly, we can define {D_(1)^(')}_(n) from {D_(1)}_(n). Would {D_(0)^(')}_(n) and {D_(1)^(')}_(n) be computationally indistinguishable?
Q8:Suppose{D},{D}y{D,} are all computationally
indistinguishable. Let's define{D,} in the following way: n
first samples a value r-D., and suppose r can be
parsed as r,lr, then output of{D, } is r,l|r,(taking the
first half of r and repeat it)
Similarly, we can define{D} from{D} . Would{D.' and {Di} be computationally indistinguishable? n