Symbol SDK Lightweight SDK for Signing Transactions

This is a lightweight SDK for signing transactions on the Symbol blockchain. It provides a simple interface for creating keypairs, signing transactions, and verifying signatures.

Installation

npm install symbol-sdk-lightweight

Usage

Here's a basic example of how to use the SDK:

const { SymbolKeypair } = require("symbol-sdk-lightweight");

// Create a keypair from a private key
const privateKey = "EDB671EB741BD676969D8A035271D1EE5E75DF33278083D877F23615EB839FEC";
const keypair = new SymbolKeypair(privateKey);

// Generation hash seed (network specific)
const generationHashSeed = "49D6E1CE276A85B70EAFE52349AACCA389302E7A9754BCF1221E79494FC665A4";

// Serialized transaction (example)
const serializedTransaction =
  "b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000087da603e7be5656c45692d5fc7f6d0ef8f24bb7a5c10ed5fda8c5cfbc49fcbc8000000000198544140420f00000000004f0047c709000000988e1191a25a88142c2fb3f69787576e3dc713efc1ce4de90000010000000000cc403c7a113bdf7c40420f0000000000";

// Sign the transaction
const signature = keypair.sign(serializedTransaction, generationHashSeed);
console.log("Signature:", signature);

API Reference

SymbolKeypair

Constructor

constructor(privateKey: string | Uint8Array)

Creates a new SymbolKeypair instance from a private key.

Static Methods

static createNewKeyPair(): SymbolKeypair

Creates a new random keypair.

static verify(serializedTransaction: string | Uint8Array, generationHashSeed: string | Uint8Array, signature: string | Uint8Array, publicKey: string | Uint8Array): boolean

Verifies a signature for a given transaction.

Instance Properties

get publicKey(): string

Returns the public key as a hexadecimal string.

get privateKey(): string

Returns the private key as a hexadecimal string.

Instance Methods

sign(serializedTransaction: string | Uint8Array, generationHashSeed: string | Uint8Array): string

Signs a serialized transaction using the keypair's private key and the network's generation hash seed.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the MIT License.