test: add unit tests for crypto_utils (Issue #993)

[adityashirsatrao007]

Fixes #993. Adds unit tests for keccak256, compress_point, and decompress_point in crypto_utils.py.

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[Copilot]

Pull request overview

This PR adds comprehensive unit tests for the crypto_utils module to address issue #993, covering keccak256, compress_point_unchecked, decompress_point, and compress_with_cryptography functions. The PR also includes an enhancement to the Good First Issue template by adding an Acceptance Criteria section.

• Adds 4 unit test functions covering cryptographic utility functions with known test vectors and round-trip validation
• Enhances the Good First Issue template with standardized acceptance criteria
• Updates CHANGELOG formatting (though introduces some issues that need correction)

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
tests/unit/crypto_utils_test.py	New comprehensive test suite for crypto_utils module with test cases for keccak256 hashing, point compression/decompression, and validation against known vectors
CHANGELOG.md	Formatting updates and whitespace changes (missing entry for #993, contains formatting issues)
.github/ISSUE_TEMPLATE/01_good_first_issue.yml	Adds Acceptance Criteria section to improve contributor guidance with clear merge requirements checklist

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[exploreriii]

Please can you make sure you always create a fork from an updated main, that is in sync with the upstream main
Otherwise you will get odd artefacts on your changelog and etc which hold you back :)

[exploreriii]

Please follow docs/sdk_developers/rebasing.md, pull all changes from upstream, rebase your branch

and then add a changelog entry please just with your change
Else the tests will fail :(

[exploreriii]

Just changed it to draft while you make the tweaks, pelase click ready to review once its ready again :)

[exploreriii]

request review @tech0priyanshu if able

[exploreriii]

Request review @AntonioCeppellini

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

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[exploreriii]

Hi @adityashirsatrao007 what do you think of the copilot feedback?
Please note you also have a merge conflict 👍

edit: marking as draft while you apply changes and mark it ready to review again

[adityashirsatrao007]

Hi @adityashirsatrao007 what do you think of the copilot feedback? Please note you also have a merge conflict 👍

edit: marking as draft while you apply changes and mark it ready to review again

Done

[tech0priyanshu]

Thank you, @adityashirsatrao007 , for this contribution! 🎉 Please make the update, and then we’ll be ready to go.

[adityashirsatrao007]

Implemented Copilot suggestions:

• Added edge case tests for decompress_point (ValueError checks).
• Added additional test vector for keccak256.
• Verified pytest passes locally.

Check updated code.

[exploreriii]

Hi @adityashirsatrao007
note when using tools, they are often not signature attached so you can lose sign status if you use them

Please follow instructions here to rectify
https://github.com/hiero-ledger/hiero-sdk-python/pull/1006/checks?check_run_id=57655613240

Else you can do a soft revert and recommit

[exploreriii]

Thank you, great going @adityashirsatrao007 !