https://github.com/cedarmist/e2eproxy-sapphire

End-to-End encryption between Client and Sapphire EVM contract using X25519 and Deoxys-II-256-128
https://github.com/cedarmist/e2eproxy-sapphire

end-to-end-encryption oasis-sapphire proxy-contract solidity

Last synced: 19 days ago
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End-to-End encryption between Client and Sapphire EVM contract using X25519 and Deoxys-II-256-128

• Host: GitHub
• URL: https://github.com/cedarmist/e2eproxy-sapphire
• Owner: CedarMist
• Created: 2023-06-17T17:14:35.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-31T10:06:16.000Z (about 1 year ago)
• Last Synced: 2024-11-02T11:21:47.653Z (2 months ago)
• Topics: end-to-end-encryption, oasis-sapphire, proxy-contract, solidity
• Language: TypeScript
• Homepage:
• Size: 9.77 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# End-to-End encrypted proxy contract example

This repo provides an example of how a contract can relay encrypted transactions on Oasis Sapphire, so the relayer cannot see which contract is being invoked or what the parameters are.

Using the [@oasis-protocol/sapphire-contracts](https://www.npmjs.com/package/@oasisprotocol/sapphire-contracts) library The E2EProxy contract generates a long-term X25519 keypair which allows users to submit a Deoxys-II encrypted payload (with forward secrecy) containing the contract address to invoke and the calldata to pass.

While [@oasis-protocol/sapphire-hardhat](https://www.npmjs.com/package/@oasisprotocol/sapphire-hardhat) package makes testing easy with Hardhat, you also need to run a local [sapphire-dev](https://github.com/oasisprotocol/oasis-web3-gateway/pkgs/container/sapphire-dev) instance which supports the necessary EVM precompiles.

For your convenience there is a `Makefile` which uses Docker to keep everything neatly contained:

```

make sapphire-dev &  # This will take a few minutes

make pnpm-install

make hardhat-compile

make hardhat-test

```