666 bloom, hashing and secp256k1 pure and secure functions.

[lucanicoladebiasi]

Description

The code at packages

• packages/core/src/bloom
• packages/core/src/hash,
• packages/core/src/secp256k1
• packages/core/tests/utils/hex

is pure (no nodejs dependencies) and secure (can be certified to be cryptographic secure).

The code avoid any conversion between Uint8Array, string and Buffer.

Code and tests still using Buffer and strings are reworked to minimize the number of files changed.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• No documentation changes, but the examples are adapted to the work with what secp256k1 provides.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• yarn test:unit
• yarn test:solo
• yarn test:examples

Test Configuration:

• Node.js Version: v21.6.2
• Yarn Version: v1.22.21

Checklist:

• My code follows the coding standards of this project
• I have performed a self-review of my code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• New and existing integration tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have not added any vulnerable dependencies to my code

[github-actions]

Test Coverage

Summary

Lines	Statements	Branches	Functions
	100% (2994/2994)	100% (620/620)	100% (626/626)

Title	Tests	Skipped	Failures	Errors	Time
core	443	0 💤	0 ❌	0 🔥	59.216s ⏱️
network	266	0 💤	0 ❌	0 🔥	1m 42s ⏱️
errors	48	0 💤	0 ❌	0 🔥	13.976s ⏱️