Verify nid after parsing EC

[justsmth]

Issues:

Addresses: #704

Description of changes:

• Verify nid of curve after parsing.

Testing:

Added new test.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.89%. Comparing base (c358484) to head (775c098).
Report is 175 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #705      +/-   ##
==========================================
- Coverage   95.80%   92.89%   -2.91%     
==========================================
  Files          61       70       +9     
  Lines        8143     9538    +1395     
  Branches        0     9538    +9538     
==========================================
+ Hits         7801     8860    +1059     
- Misses        342      412      +70     
- Partials        0      266     +266     

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