Question: Suppose a hash function is created by the following steps: 1. encrypt the plaintext using a substitution cipher 2. convert ciphertext to numbers using this

Suppose a hash function is created by the following steps:

1. encrypt the plaintext using a substitution cipher

2. convert ciphertext to numbers using this conversion a is 0, b is 1 c is 2...z is 25.

3. remove the first 7 numbers then add 3 to each of the remaining numbers

4. Multiply each number by 2 and then subtract 100 from the result

If the substitution cipher is complex, is this hash function preimage resistant? If the substitution cipher is simple, is this hash function preimage resistant?

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