Question: Consider the following hash function. Messages are in the form of a sequence of numbers in Z _ n , M =

Consider the following hash function. Messages are in the form of a sequence of
numbers in Z_n,\ M\=\(a_1,\ a_2,\...,a_t). The hash value h is calculated as (\sum_{i=1}^{t}{a_i^2)}mod\ n for some predefined value n.
Does this hash function satisfy any of the requirements for a hash function listed below? Explain your answer for each case.
It can be applied to a block of data of any size.
It produces a fixed-length output.
It is relatively easy to compute for any given input.
Preimage resistance.
Secondary preimage resistance.
Collision resistance.

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