Added signing and enc/signing

[wneessen]

No description provided.

[codecov-commenter]

Codecov Report

Merging #23 (f7a36b3) into main (588543b) will decrease coverage by 3.07%.
The diff coverage is 32.35%.

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@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
- Coverage   89.40%   86.34%   -3.07%     
==========================================
  Files           5        5              
  Lines         387      410      +23     
==========================================
+ Hits          346      354       +8     
- Misses         35       50      +15     
  Partials        6        6              

Impacted Files	Coverage Δ
openpgp/openpgp.go	70.19% <32.35%> (-6.37%)	⬇️

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