bitcoin-address-generator

A Rust library for Bitcoin key derivation and address generation.

Features

• 🔐 Secure Memory Handling: Sensitive data like private keys and seeds are automatically zeroized when no longer needed
• 🔑 BIP39 Mnemonic Generation: Create new mnemonic phrases with various word counts (12, 15, 18, 21, 24 words)
• 💼 Multiple Address Types:
  • Legacy addresses (P2PKH) via BIP44
  • Nested SegWit addresses (P2SH-WPKH) via BIP49
  • Native SegWit addresses (P2WPKH) via BIP84
  • Taproot addresses (P2TR) via BIP86
• 🌐 Network Support: Works with Bitcoin mainnet, testnet, regtest, and signet
• 🛠️ Script Hash Calculation: Calculate script hashes for Bitcoin addresses (compatible with Electrum servers)
• 📋 Private Key Export: Derive private keys in WIF format
• 🧩 BIP32 HD Wallet: Supports custom derivation paths
• 📚 Multi-language Support: Generate mnemonics in different languages

Installation

Add this to your Cargo.toml:

[dependencies]
bitcoin-address-generator = "0.1.0"

Usage Examples

Generate a New Mnemonic Phrase

use bitcoin_address_generator::{generate_mnemonic, WordCount};
use bip39::Language;

fn main() {
    // Generate a default 12-word mnemonic in English
    let mnemonic = generate_mnemonic(None, None).unwrap();
    println!("Generated mnemonic: {}", mnemonic);
    
    // Generate a 24-word mnemonic in English
    let mnemonic = generate_mnemonic(Some(WordCount::Words24), None).unwrap();
    println!("24-word mnemonic: {}", mnemonic);
    
    // Generate a 12-word mnemonic in Japanese
    let mnemonic = generate_mnemonic(None, Some(Language::Japanese)).unwrap();
    println!("Japanese mnemonic: {}", mnemonic);
}

Derive Different Address Types from a Mnemonic

use bitcoin_address_generator::derive_bitcoin_address;
use bitcoin::Network;

fn main() {
    let mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about";
    
    // Derive a Legacy (P2PKH) address
    let p2pkh_addr = derive_bitcoin_address(
        mnemonic,
        Some("m/44'/0'/0'/0/0"),
        Some(Network::Bitcoin),
        None
    ).unwrap();
    println!("Legacy address: {}", p2pkh_addr.address);
    
    // Derive a Nested SegWit (P2SH-WPKH) address
    let p2sh_wpkh_addr = derive_bitcoin_address(
        mnemonic,
        Some("m/49'/0'/0'/0/0"),
        Some(Network::Bitcoin),
        None
    ).unwrap();
    println!("Nested SegWit address: {}", p2sh_wpkh_addr.address);
    
    // Derive a Native SegWit (P2WPKH) address
    let p2wpkh_addr = derive_bitcoin_address(
        mnemonic,
        Some("m/84'/0'/0'/0/0"),
        Some(Network::Bitcoin),
        None
    ).unwrap();
    println!("Native SegWit address: {}", p2wpkh_addr.address);
    
    // Derive a Taproot (P2TR) address
    let p2tr_addr = derive_bitcoin_address(
        mnemonic,
        Some("m/86'/0'/0'/0/0"),
        Some(Network::Bitcoin),
        None
    ).unwrap();
    println!("Taproot address: {}", p2tr_addr.address);
    
    // Derive a testnet address
    let testnet_addr = derive_bitcoin_address(
        mnemonic,
        Some("m/84'/1'/0'/0/0"),
        Some(Network::Testnet),
        None
    ).unwrap();
    println!("Testnet address: {}", testnet_addr.address);
}

Derive Multiple Addresses at Once

use bitcoin_address_generator::derive_bitcoin_addresses;
use bitcoin::Network;

fn main() {
    let mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about";
    
    // Derive 5 consecutive receiving addresses (m/84'/0'/0'/0/0 through m/84'/0'/0'/0/4)
    let receive_addresses = derive_bitcoin_addresses(
        mnemonic,
        Some("m/84'/0'/0'"),  // Base path up to account level
        Some(Network::Bitcoin),
        None,                  // No BIP39 passphrase
        Some(false),           // Receiving addresses (false = receiving, true = change)
        Some(0),               // Start index
        Some(5)                // Number of addresses to generate
    ).unwrap();
    
    println!("Generated {} receiving addresses:", receive_addresses.addresses.len());
    for (i, addr) in receive_addresses.addresses.iter().enumerate() {
        println!("Address {}: {} (path: {})", i, addr.address, addr.path);
    }
    
    // Derive 3 change addresses (m/84'/0'/0'/1/0 through m/84'/0'/0'/1/2)
    let change_addresses = derive_bitcoin_addresses(
        mnemonic,
        Some("m/84'/0'/0'"),  // Base path up to account level
        Some(Network::Bitcoin),
        None,                  // No BIP39 passphrase
        Some(true),            // Change addresses (false = receiving, true = change)
        Some(0),               // Start index
        Some(3)                // Number of addresses to generate
    ).unwrap();
    
    println!("\nGenerated {} change addresses:", change_addresses.addresses.len());
    for (i, addr) in change_addresses.addresses.iter().enumerate() {
        println!("Change Address {}: {} (path: {})", i, addr.address, addr.path);
    }
    
    // You can also start from a specific index
    let custom_range = derive_bitcoin_addresses(
        mnemonic,
        Some("m/84'/0'/0'"),
        Some(Network::Bitcoin),
        None,
        Some(false),
        Some(10),              // Start from index 10
        Some(2)                // Generate 2 addresses
    ).unwrap();
    
    println!("\nCustom range addresses:");
    for addr in custom_range.addresses.iter() {
        println!("{} (path: {})", addr.address, addr.path);
    }
}

Calculate a Script Hash for an Address

use bitcoin_address_generator::calculate_script_hash;
use bitcoin::Network;

fn main() {
    // Calculate script hash for a P2PKH address
    let script_hash = calculate_script_hash(
        "1LqBGSKuX5yYUonjxT5qGfpUsXKYYWeabA",
        Some(Network::Bitcoin)
    ).unwrap();
    println!("Script hash: {}", script_hash);
    
    // This can be used with Electrum servers for transaction history
}

Derive a Private Key in WIF Format

use bitcoin_address_generator::derive_private_key;
use bitcoin::Network;

fn main() {
    let mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about";
    
    // Derive private key for a specific derivation path
    let private_key = derive_private_key(
        mnemonic,
        Some("m/84'/0'/0'/0/0"),
        Some(Network::Bitcoin),
        None
    ).unwrap();
    println!("Private key (WIF): {}", private_key);
}

Using a BIP39 Passphrase (Optional Extra Security)

use bitcoin_address_generator::derive_bitcoin_address;
use bitcoin::Network;

fn main() {
    let mnemonic = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about";
    let passphrase = "my secret passphrase";
    
    // Derive address with a BIP39 passphrase
    let addr = derive_bitcoin_address(
        mnemonic,
        Some("m/84'/0'/0'/0/0"),
        Some(Network::Bitcoin),
        Some(passphrase)
    ).unwrap();
    println!("Address with passphrase: {}", addr.address);
    println!("Public key: {}", addr.public_key);
}

API Documentation

Main Functions

generate_mnemonic(word_count: Option<WordCount>, language: Option<Language>) -> Result<String, DerivationError>

Generates a new BIP39 mnemonic phrase.

• word_count: Optional. Number of words (12, 15, 18, 21, or 24). Defaults to 12.
• language: Optional. Mnemonic language. Defaults to English.
• Returns: The mnemonic phrase as a string, or an error.

derive_bitcoin_address(mnemonic_phrase: &str, derivation_path_str: Option<&str>, network: Option<Network>, bip39_passphrase: Option<&str>) -> Result<GetAddressResponse, DerivationError>

Derives a Bitcoin address from a mnemonic phrase.

• mnemonic_phrase: The BIP39 mnemonic phrase.
• derivation_path_str: Optional. BIP32 derivation path. Defaults to "m/84'/0'/0'/0/0".
• network: Optional. Bitcoin network. Defaults to Bitcoin mainnet.
• bip39_passphrase: Optional. BIP39 passphrase. Defaults to empty string.
• Returns: A GetAddressResponse containing address, derivation path, and public key, or an error.

derive_bitcoin_addresses(mnemonic_phrase: &str, derivation_path_str: Option<&str>, network: Option<Network>, bip39_passphrase: Option<&str>, is_change: Option<bool>, start_index: Option<u32>, count: Option<u32>) -> Result<GetAddressesResponse, DerivationError>

Derives multiple Bitcoin addresses from a single mnemonic by iterating through a range of indices.

• mnemonic_phrase: The BIP39 mnemonic phrase.
• derivation_path_str: Optional. Base path up to the account level (e.g., "m/84'/0'/0'"). Defaults to "m/84'/0'/0'".
• network: Optional. Bitcoin network. Defaults to Bitcoin mainnet.
• bip39_passphrase: Optional. BIP39 passphrase. Defaults to empty string.
• is_change: Optional. Whether to derive change addresses (true) or receiving addresses (false). Defaults to false.
• start_index: Optional. Starting index for address derivation. Defaults to 0.
• count: Optional. Number of addresses to generate. Defaults to 1. Returns: A GetAddressesResponse containing a collection of addresses, or an error.

calculate_script_hash(address: &str, network: Option<Network>) -> Result<String, DerivationError>

Calculates a script hash for a Bitcoin address.

• address: The Bitcoin address.
• network: Optional. Bitcoin network. Defaults to Bitcoin mainnet.
• Returns: The script hash as a hex string, or an error.

derive_private_key(mnemonic_phrase: &str, derivation_path_str: Option<&str>, network: Option<Network>, bip39_passphrase: Option<&str>) -> Result<String, DerivationError>

Derives a private key in WIF format.

• mnemonic_phrase: The BIP39 mnemonic phrase.
• derivation_path_str: Optional. BIP32 derivation path. Defaults to "m/84'/0'/0'/0/0".
• network: Optional. Bitcoin network. Defaults to Bitcoin mainnet.
• bip39_passphrase: Optional. BIP39 passphrase. Defaults to empty string.
• Returns: The private key in WIF format, or an error.

Data Structures

GetAddressResponse

Holds the result of address derivation.

pub struct GetAddressResponse {
    pub address: String,
    pub path: String,
    pub public_key: String,
}

GetAddressesResponse

Holds the result of multiple address derivation.

pub struct GetAddressesResponse {
    pub addresses: Vec<GetAddressResponse>,
}

WordCount

Enum representing the possible number of words in a mnemonic phrase.

pub enum WordCount {
    Words12 = 12,
    Words15 = 15,
    Words18 = 18,
    Words21 = 21,
    Words24 = 24,
}

DerivationError

Error type for key derivation operations.

Security Considerations

1. Protecting Private Keys: This library uses the zeroize crate to automatically clear sensitive data from memory when it's no longer needed.

2. Mnemonic Phrases: Treat mnemonic phrases with the same level of security as private keys. They should never be stored unencrypted or shared.

3. BIP39 Passphrases: Using a BIP39 passphrase adds an extra layer of security, but also means you must remember both the mnemonic and the passphrase to recover your wallet.

4. Network Validation: The library validates that the derivation path's coin type matches the requested network to prevent address derivation on the wrong network.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributing

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

1. Fork the repository

2. Create your feature branch (git checkout -b feature/amazing-feature)

3. Commit your changes (git commit -m 'Add some amazing feature')

4. Push to the branch (git push origin feature/amazing-feature)

5. Open a Pull Request

Run tests and show logs

cargo test -- --nocapture

Run a specific test

cargo test <test_name> -- --nocapture
cargo test test_generate_mnemonic -- --nocapture