Refactor interfaces for less boilerplate code

[codecov[bot]]

Codecov Report

Merging #46 (7d7f8bd) into main (13277d8) will decrease coverage by 0.07%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #46      +/-   ##
==========================================
- Coverage   88.61%   88.55%   -0.07%     
==========================================
  Files           6        6              
  Lines         738      734       -4     
==========================================
- Hits          654      650       -4     
  Misses         62       62              
  Partials       22       22              

Impacted Files	Coverage Δ
internal/algorithm/aes.go	91.78% <ø> (-0.63%)	:arrow_down:
internal/algorithm/ecdsa.go	94.00% <ø> (-0.83%)	:arrow_down:
internal/algorithm/rsa.go	76.31% <ø> (-0.81%)	:arrow_down:
client.go	88.59% <100.00%> (+0.08%)	:arrow_up:
internal/algorithm/algorithm.go	100.00% <100.00%> (ø)

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