feat(tests): add test case for P256 where Q.x is zero
#2221
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The P256 curve has two points with `x` coordinate being `0` (and none points with `y` being `0`). Add two positive test cases where the points with `0` x-coordinate are public keys.
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spencer-tb
added
scope:tests
spencer-tb
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Sep 29, 2025
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🗒️ Description
The P256 curve has two points with
xcoordinate being0(and none points withybeing0). Add two positive test cases where the points with0x-coordinate are public keys.🔗 Related Issues or PRs
#2194
✅ Checklist
toxchecks to avoid unnecessary CI fails, see also Code Standards and Enabling Pre-commit Checks:uvx --with=tox-uv tox -e lint,typecheck,spellcheck,markdownlinttype(scope):.