Q$2($f$)(16$ marks$)$

The manager of the restaurant is concerned about security so the developer has added a hashing algorithm to encrypt the names before they are stored. This code is implemented in the function below:

def enc$(t,c)$ :

$e={?}^{\text{'}}\text{'}$

for ch in $t$ :

if $\text{'}a\text{'}ch\text{'}z\text{'}$:

$e=e+c[ord(ch)-$ord${(}^{\text{'}}{a}^{\text{'}})]$

else:

$e=e+ch$

return e

Q$2($f$)($i$)(8$ marks$)$

The code above breaks a number of the guidance rules that you have been taught about in this module.

Identify four distinct rules that have been broken and explain why breaking this rule may be a problem.