[nasa/cryptolib#401] Readded UT and MAC debug comments

[Donnie-Ice]

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.18%. Comparing base (14ee573) to head (d424b24).
Report is 279 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #473      +/-   ##
==========================================
+ Coverage   75.97%   82.18%   +6.21%     
==========================================
  Files          81       39      -42     
  Lines       22263    12059   -10204     
  Branches     1807      978     -829     
==========================================
- Hits        16914     9911    -7003     
+ Misses       4707     1776    -2931     
+ Partials      642      372     -270     

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