[Crypto] minor clean up

[tarakby]

Minor cleanups (clearer names, formatting, typos, use E2 descriptive instead of G2)

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: +0.04% 🎉

Comparison is base (6fb9707) 54.91% compared to head (262c3e0) 54.96%.

Additional details and impacted files

@@                      Coverage Diff                      @@
##           feature/blst-based-crypto    #4740      +/-   ##
=============================================================
+ Coverage                      54.91%   54.96%   +0.04%     
=============================================================
  Files                            918      918              
  Lines                          85921    85680     -241     
=============================================================
- Hits                           47182    47090      -92     
+ Misses                         35134    34990     -144     
+ Partials                        3605     3600       -5     

Flag	Coverage Δ
unittests	54.96% <ø> (+0.04%)	⬆️

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see 17 files with indirect coverage changes

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