Pseudo-Random Generators and Pseudo-Random Functions Let G : {0,1}?-+ {0,1}1(A) be a secure pseudo-random generator with expansion factor 1(A). Describe what is wrong with each of the following attempts to build a secure pseud function F i) : {0, 1 }? x (0,1}? ? {0, 1}1(A): o-random (a) Fc : (k,x) -> G(x) (b) F: (k,x) G(k) (d) FC : (k,x) G(R) eG(x) Pseudo-Random Generators and Pseudo-Random Functions Let G : {0,1}?-+ {0,1}1(A) be a secure pseudo-random generator with expansion factor 1(A). Describe what is wrong with each of the following attempts to build a secure pseud function F i) : {0, 1 }? x (0,1}? ? {0, 1}1(A): o-random (a) Fc : (k,x) -> G(x) (b) F: (k,x) G(k) (d) FC : (k,x) G(R) eG(x)