t parameters are not valid</li>
<li>an error when input buffer has invalid values</li>
</ul>
<p>TDD Test Cases: &mdash;Initialization&mdash; Len is odd Len is zero Str is NULL Buf is NULL &mdash;Functionality&mdash; Str input with only numbers Str input with All values in A-F Str input with All values in a-f Str input with values in a-f, 0-9, A-F Str input with values in a-z, 0-9, A-Z Boundary Cases Memory Bounds of buffer checking </p>
<p>Check the parameters</p>
<p>Len has to be multiple of 2</p>
<p>Conve