quantum_lib 0.1.1

# Advanced Usage


Quantum Lib is an advanced Rust library tailored for building quantum blockchains. This document covers the advanced features provided by the library and how to leverage them for secure, efficient, and quantum-resistant blockchain systems.

## Quantum Blockchain Features


```rust
// ENHANCED HASHING WITH QUANTUM SECURITY
// Quantum Lib implements a quantum-resistant hashing algorithm based on enhanced SHA-256,
// ensuring data integrity and security even against quantum computing threats.

use quantum_lib::QuantumBlock;

let block = QuantumBlock::new(1, 1234567890, "Example Data", "PreviousHash");
let hash = block.calculate_hash();
println!("Quantum Hash: {}", hash);


// SMART CONTRACT EXECUTION
// This library supports the execution of smart contracts within the blockchain.
// These contracts are securely processed with quantum-resistant algorithms.

use quantum_lib::QuantumBlockchain;

let mut blockchain = QuantumBlockchain::new();
blockchain.execute_smart_contract("contract_123", "param1=value1;param2=value2");
println!("Smart contract executed successfully.");


// SECURE TRANSACTIONS WITH QUANTUM ENCRYPTION
// Quantum Lib integrates quantum-resistant encryption algorithms to protect transactions,
// ensuring the security of sensitive data.

use quantum_lib::{encrypt_data, decrypt_data};

let transaction_data = "Transaction from Alice to Bob: 50.0 coins";
let encrypted = encrypt_data(transaction_data);
println!("Encrypted Transaction Data: {}", encrypted);

let decrypted = decrypt_data(&encrypted, "private_key_example");
println!("Decrypted Transaction Data: {}", decrypted);


// BLOCKCHAIN VALIDATION AND CONSENSUS
// Quantum Lib validates the blockchain's integrity by verifying block hashes and links.
// It also supports consensus mechanisms for distributed networks.

use quantum_lib::QuantumBlockchain;

let mut blockchain = QuantumBlockchain::new();
blockchain.add_transaction("Alice", "Bob", 50.0);
blockchain.mine_block();

if blockchain.validate_chain() {
    println!("Blockchain is valid.");
} else {
    println!("Blockchain integrity compromised!");
}


// BLOCK MINING WITH PENDING TRANSACTIONS
// The library includes a mining mechanism that processes pending transactions into a new block,
// ensuring they are securely added to the blockchain.

use quantum_lib::QuantumBlockchain;

let mut blockchain = QuantumBlockchain::new();
blockchain.add_transaction("Alice", "Bob", 100.0);
blockchain.mine_block();

println!("Blockchain after mining: {:?}", blockchain);


// QUANTUM-ENHANCED FEATURES
// Quantum Lib is optimized to handle large-scale blockchains with quantum-inspired improvements
// in cryptographic operations, providing better performance and scalability.

use quantum_lib::QuantumBlockchain;

let mut blockchain = QuantumBlockchain::new();
for i in 0..10 {
    blockchain.add_transaction(&format!("User{}", i), "Vendor", i as f64 * 10.0);
}
blockchain.mine_block();
println!("Blockchain state: {:?}", blockchain);


// ADDITIONAL NOTES
// Always ensure private keys are securely managed for cryptographic operations.
// Regularly validate your blockchain to maintain its integrity.
// Optimize mining parameters for better performance in large-scale deployments.