ECDSA Node - Basic Blockchain Application

ECDSA Node is a blockchain project that provides a hands-on experience in developing a basic blockchain application. The project consists of three key components: Wallet, Transfer, and Output, which work together to enable secure transactions between accounts.

Wallet Component

The Wallet component serves as the user interface for managing user accounts. It allows users to:

• View their wallet address, balance, and private key.
• Input their private key, and the component uses the ethereum-cryptography library to generate the corresponding wallet address.
• Enter a message that they want to sign for transaction verification.

Transfer Component

The Transfer component is responsible for facilitating secure transactions between accounts. The process involves:

• Generating the message hash of the transaction using the ethereum-cryptography library.
• Using the secp256k1 library from the @noble/curves package to sign the message hash with the user's private key, producing a digital signature.
• The digital signature ensures that only the user with the correct private key can authorize the transaction.

Output Component

The Output component provides visual feedback to users by displaying the details of the transaction, including:

• The sender's address.
• The recipient's address.
• The signature generated during the transaction.
• Additionally, the Output component shows the resulting balance after a successful transfer.

Key Features

• Public Key Cryptography: The project leverages public key cryptography provided by the ethereum-cryptography library to create secure transactions. This ensures that transfers can only be completed with a valid signature from the private key owner.
• Digital Signatures: The secp256k1 library from the @noble/curves package is utilized to generate digital signatures for each transaction. These signatures are used to verify the authenticity of the transactions and prevent unauthorized access.

Disclaimer

Please note that this project is designed for educational purposes and is not intended for production use. As it operates on a single centralized server, it assumes trust in the server operator for this learning exercise. However, in real-world blockchain applications, decentralized networks and consensus mechanisms are critical to ensuring security and trust.