Feat: added encryption of shares

[lakshayvaishnav]

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Feat: added encryption of shares

I've added AES encryption to the shares generated during the secret splitting process. This ensures that even if someone gets their hands on the shares, they won't be able to access the original secret without the proper keys.

#136

🛠️ Type of Change

• 🐛 Bug fix
• ✨ New feature
• 🚨 Breaking change
• 📚 Documentation update

✅ Checklist

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• Code Style: My code adheres to the project’s style guidelines.
• Self-Review: I have reviewed my own code and made improvements.
• Comments: I’ve added comments to explain complex or non-obvious parts of the code.
• Documentation: I’ve updated the documentation to reflect my changes.
• Warnings: My changes introduce no new warnings.
• Tests: I’ve added tests to verify that my changes work as expected.
• Passes Locally: All new and existing unit tests pass on my local machine.

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[axatbhardwaj]

Hi @lakshayvaishnav why are we not using IV over here ?

would like to know if it was a deliberate decision and if not then we need to use IV while encrypting

IV

[cb7chaitanya]

Also we have to handle three shares of the private key right now