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Certainly! Here's an expanded and optimized version of the code: ```cpp #include <iostream> #include <vector> #include <string> #include <sstream> #include <iomanip> #include <openssl/evp.h> #include <openssl/rsa.h> #include <openssl/ec.h> #include <openssl/rand.h> #include <openssl/sha.h> #include <openssl/ssl.h> #include <openssl/bio.h> #include <openssl/pem.h> #include <ctime> // Define a structure for nodes in the reticulum struct Node { std::string name; int id; std::vector<Node*> connections; }; // Function to convert a number to a string template <typename T> std::string toString(const T& value) { std::ostringstream oss; oss << value; return oss.str(); } // Function to iterate through the nodes in the reticulum using nested loops void iterateReticulum(const std::vector<Node*>& reticulum) { for (const Node* node : reticulum) { std::cout << "Node ID: " << node->id << ", Name: " << node->name << std::endl; for (const Node* connection : node->connections) { std::cout << "Connected to Node ID: " << connection->id << ", Name: " << connection->name << std::endl; } } } // Function to perform encryption using OpenSSL std::string encrypt(const std::string& data, const std::string& publicKeyPath) { // Load the public key from file FILE* file = fopen(publicKeyPath.c_str(), "rb"); if (!file) { std::cerr << "Failed to open public key file" << std::endl; return ""; } EVP_PKEY* publicKey = PEM_read_PUBKEY(file, nullptr, nullptr, nullptr); fclose(file); // Initialize the encryption context EVP_CIPHER_CTX* ctx = EVP_CIPHER_CTX_new(); if (!ctx) { std::cerr << "Failed to create encryption context" << std::endl; EVP_PKEY_free(publicKey); return ""; } // Initialize the encryption operation with the public key if (EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), nullptr, nullptr, nullptr) != 1) { std::cerr << "Failed to initialize encryption operation" << std::endl; EVP_PKEY_free(publicKey); EVP_CIPHER_CTX_free(ctx); return ""; } // Set the public key for the encryption operation if (EVP_EncryptInit_ex(ctx, nullptr, nullptr, EVP_PKEY_get0_RSA(publicKey), nullptr) != 1) { std::cerr << "Failed to set public key" << std::endl; EVP_PKEY_free(publicKey); EVP_CIPHER_CTX_free(ctx); return ""; } // Get the size of the encrypted output buffer int encryptedSize = EVP_PKEY_size(publicKey) + EVP_MAX_BLOCK_LENGTH; // Create the output buffer std::string encryptedData(encryptedSize, '\0'); // Encrypt the data int actualEncryptedSize; if (EVP_EncryptUpdate(ctx, reinterpret_cast<unsigned char*>(encryptedData.data()), &actualEncryptedSize, reinterpret_cast<const unsigned char*>(data.c_str()), data.size()) != 1 || EVP_EncryptFinal_ex(ctx, reinterpret_cast<unsigned char*>(encryptedData.data()) + actualEncryptedSize, &actualEncryptedSize) != 1) { std::cerr << "Encryption failed" << std::endl; EVP_PKEY_free(publicKey); EVP_CIPHER_CTX_free(ctx); return ""; } // Resize the output buffer to the actual encrypted size encryptedData.resize(actualEncryptedSize); // Clean up EVP_PKEY_free(publicKey); EVP_CIPHER_CTX_free(ctx); return encryptedData; } int main() { // Create some nodes in the reticulum Node node1{ "Node 1", 1 }; Node node2{ "Node 2", 2 }; Node node3{ "Node 3", 3 }; // Connect the nodes node1.connections.push_back(&node2); node1.connections.push_back(&node3); node2.connections.push_back(&node1); node3.connections.push_back(&node1); // Iterate through the reticulum iterateReticulum({ &node1, &node2, &node3 }); // Encrypt some data std::string data = "Hello, world!"; std::string publicKeyPath = "public_key.pem"; std
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