Question: Let : { 0 , 1 } { 0 , 1 } and : { 0 , 1 } { 0 , 1 } be

Let :{0,1}{0,1} and :{0,1}{0,1} be both collision
resistant functions. Lets define :{0,1}2{0,1}2 as (1,2)=
(1)||(2).
Would still be a collision resistant hash function? Would be a
one-way function?

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