Create a transaction in Solana with an EVM keypair

Project description

The project comprises of two main components. The first component involves using MetaMask wallet to sign and create the signature from your message. The second component involves writing a custom program and deploying it on the Solana network. Bringing these two components together is the main objective of this project, showcasing how to create and transmit a transaction in Solana using an EVM keypair for signing, along with interacting with the Solana network through a custom program.

These are the references:

• Secp256k1 Program
• Signing data with Metamask
• How to Connect a React DApp to MetaMask
• How to Write Your First Anchor Program in Solana

Table of Contents

• Create a transaction in Solana with an EVM keypair
  • Project description
  • Table of Contents
  • Connect and Signing with Metamask:
  • Write Anchor Program in Solana:
  • Combination:
  • Discoveries:
  • Install and run
    • In user role
    • In server role

Connect and Signing with Metamask:

• Create a simple DApp to connect with your Metamask wallet.
• Creaet input box for user to input the message.
• Signing your message with Metamask by using personal_sign method. (Note: It is necessary to convert the message to hex and add the currency 0x)
• Verify this signature by using ethers.utils.verifyMessage to verify the signature.

Write Anchor Program in Solana:

• Write a simple transaction to interact with the Secp256k1 Program on the Solana network (Example).
• Write your own program to create PDA accounts and deploy it to the Solana network.
• Write your own client.ts to interact with the program you wrote.

Combination:

• Create client and server, client to interact with metamask wallet, and server to interact with solana network.
• Get the signature, message, publickey of the eth address and wrap it up as the data of an instruction and send it to the server (Note: The message should be modified because when using the personal_sign method the message was modified to \x19Ethereum Signed Message:\n${message.length}${message})
• Update your program has written above, create 2 functions, one is create PDA account has amount, another is transfer amount from one PDA account to another PDA account (Example).
• The server will create a transaction with 2 instructions, one to send to the Secp256k1 Program to verify the signature of the metamask wallet and one to interact with your Program.

Discoveries:

• If it only takes one person to sign, use sign.
• To accommodate multiple signers, use transaction.partialSign(signer) to sign the transaction. Using transaction.sign(signer) would nullify the signatures of previous signers, preventing confirmation of transactions with multiple signers.
• If you serialize the same transaction multiple times, the network state will be out of sync, so set skipPreflight:true when use sendEncodedTransaction instead of sendTransaction to avoid issues.

Install and run

In user role

yarn start

In server role

cd server
node server.js