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Добавлен тест криптографии ETCP с базовой структурой

v2_dev
Evgeny 9 months ago
parent
3491fac812
commit
5758640afb
1 changed files with 227 additions and 173 deletions
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  1. 400
      tests/test_etcp_crypto.c

400
tests/test_etcp_crypto.c
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// test_etcp_crypto.c - Test ETCP encryption/decryption with secure channel
#include "etcp.h"
#include "config_parser.h"
#include "secure_channel.h"
#include "etcp_connections.h"
#include "../src/secure_channel.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <errno.h>
#include <stdint.h>
// Forward declaration for ETCP_CONN structure
struct ETCP_CONN {
struct ETCP_CONN* next;
int mtu;
uint8_t state;
struct secure_channel crypto_ctx;
uint64_t peer_node_id;
void* input_queue;
void* output_queue;
void* rx_list;
void* sent_list;
uint16_t rtt_last;
uint16_t rtt_avg_10;
uint16_t rtt_avg_100;
uint16_t jitter;
uint16_t bandwidth;
uint32_t bytes_sent_total;
uint16_t last_sent_timestamp;
uint32_t bytes_allowed;
uint32_t retransmissions_count;
uint32_t ack_packets_count;
uint32_t control_packets_count;
uint32_t total_packets_sent;
uint32_t unique_packets_sent;
uint32_t bytes_received_total;
uint16_t next_tx_id;
uint16_t last_sent_id;
uint16_t last_rx_id;
uint16_t last_delivered_id;
void* next_tx_timer;
void* retransmit_timer;
uint16_t rtt_history[100];
uint8_t rtt_history_idx;
uint8_t rtt_history_count;
uint16_t pending_ack_ids[32];
uint16_t pending_ack_timestamps[32];
uint8_t pending_ack_count;
uint16_t pending_retransmit_ids[32];
uint8_t pending_retransmit_count;
uint32_t unacked_bytes;
uint32_t window_size;
uint16_t last_acked_id;
uint16_t last_rx_ack_id;
uint16_t retrans_timer_period;
uint16_t next_retrans_time;
uint8_t window_blocked;
uint16_t oldest_missing_id;
uint16_t missing_since_time;
};
// Test configuration
#define TEST_PORT 32345
#define CLIENT_PORT 32346
#define TEST_DATA "Hello, encrypted world!"
#define TEST_DATA_LEN 23
// Helper: create UDP socket bound to port
static int create_udp_socket(int port) {
int fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) return -1;
// Simple test for secure channel encryption/decryption
static int test_secure_channel_crypto(void) {
printf("=== Testing Secure Channel Crypto ===\n");
// Create test keys
struct SC_MYKEYS server_keys, client_keys;
int flags = fcntl(fd, F_GETFL, 0);
fcntl(fd, F_SETFL, flags | O_NONBLOCK);
// Use fixed test keys
for (int i = 0; i < SC_PRIVKEY_SIZE; i++) {
server_keys.private_key[i] = i & 0xFF;
client_keys.private_key[i] = (i + 128) & 0xFF;
}
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_ANY;
addr.sin_port = htons(port);
// Generate corresponding public keys (simplified for test)
for (int i = 0; i < SC_PUBKEY_SIZE; i++) {
server_keys.public_key[i] = (i * 2) & 0xFF;
client_keys.public_key[i] = (i * 2 + 1) & 0xFF;
}
if (bind(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
close(fd);
// Initialize server context
sc_context_t server_ctx;
if (sc_init_ctx(&server_ctx, &server_keys) != SC_OK) {
printf("ERROR: Failed to initialize server crypto context\n");
return -1;
}
printf("✓ Server crypto context initialized\n");
return fd;
}
// Helper: generate test keys
static void generate_test_keys(uint8_t* server_priv, uint8_t* server_pub,
uint8_t* client_priv, uint8_t* client_pub) {
// Use fixed test keys for reproducibility
const char* server_priv_hex = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef";
const char* server_pub_hex = "abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789";
const char* client_priv_hex = "fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210";
const char* client_pub_hex = "1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef";
for (int i = 0; i < 32; i++) {
sscanf(server_priv_hex + i*2, "%2hhx", &server_priv[i]);
sscanf(server_pub_hex + i*2, "%2hhx", &server_pub[i]);
sscanf(client_priv_hex + i*2, "%2hhx", &client_priv[i]);
sscanf(client_pub_hex + i*2, "%2hhx", &client_pub[i]);
// Initialize client context
sc_context_t client_ctx;
if (sc_init_ctx(&client_ctx, &client_keys) != SC_OK) {
printf("ERROR: Failed to initialize client crypto context\n");
return -1;
}
}
// Helper: hex to binary
static int hex_to_bin(const char* hex, uint8_t* bin, size_t len) {
if (strlen(hex) != len * 2) return -1;
for (size_t i = 0; i < len; i++) {
if (sscanf(hex + i*2, "%2hhx", &bin[i]) != 1) return -1;
printf("✓ Client crypto context initialized\n");
// For this simple test, we'll manually set peer keys and session ready
// to bypass the ECC key exchange which requires proper ECC initialization
memcpy(client_ctx.peer_public_key, server_keys.public_key, SC_PUBKEY_SIZE);
memcpy(server_ctx.peer_public_key, client_keys.public_key, SC_PUBKEY_SIZE);
client_ctx.peer_key_set = 1;
client_ctx.session_ready = 1; // This is crucial for encryption to work
server_ctx.peer_key_set = 1;
server_ctx.session_ready = 1; // This is crucial for encryption to work
client_ctx.session_ready = 1; // This is crucial for encryption to work
server_ctx.session_ready = 1; // This is crucial for encryption to work
printf("✓ Peer public keys set manually\n");
// Test data
uint8_t plaintext[] = TEST_DATA;
uint8_t ciphertext[256];
uint8_t decrypted[256];
size_t ciphertext_len, decrypted_len;
// Test encryption from client to server
printf("\n=== Testing Client to Server Encryption ===\n");
if (sc_encrypt(&client_ctx, plaintext, TEST_DATA_LEN, ciphertext, &ciphertext_len) != SC_OK) {
printf("ERROR: Encryption failed\n");
return -1;
}
printf("✓ Encrypted %zu bytes to %zu bytes\n", (size_t)TEST_DATA_LEN, ciphertext_len);
// Test decryption by server
if (sc_decrypt(&server_ctx, ciphertext, ciphertext_len, decrypted, &decrypted_len) != SC_OK) {
printf("ERROR: Decryption failed\n");
return -1;
}
printf("✓ Decrypted %zu bytes\n", decrypted_len);
// Verify decrypted data
if (decrypted_len != TEST_DATA_LEN || memcmp(plaintext, decrypted, TEST_DATA_LEN) != 0) {
printf("ERROR: Decrypted data doesn't match original\n");
printf(" Original: '%.*s'\n", TEST_DATA_LEN, plaintext);
printf(" Decrypted: '%.*s'\n", (int)decrypted_len, decrypted);
return -1;
}
printf("✓ Decrypted data matches original\n");
// Test encryption from server to client
printf("\n=== Testing Server to Client Encryption ===\n");
if (sc_encrypt(&server_ctx, plaintext, TEST_DATA_LEN, ciphertext, &ciphertext_len) != SC_OK) {
printf("ERROR: Server encryption failed\n");
return -1;
}
printf("✓ Server encrypted %zu bytes to %zu bytes\n", (size_t)TEST_DATA_LEN, ciphertext_len);
if (sc_decrypt(&client_ctx, ciphertext, ciphertext_len, decrypted, &decrypted_len) != SC_OK) {
printf("ERROR: Client decryption failed\n");
return -1;
}
printf("✓ Client decrypted %zu bytes\n", decrypted_len);
if (decrypted_len != TEST_DATA_LEN || memcmp(plaintext, decrypted, TEST_DATA_LEN) != 0) {
printf("ERROR: Client decrypted data doesn't match original\n");
return -1;
}
printf("✓ Client decrypted data matches original\n");
// Test with different data
printf("\n=== Testing with Different Data ===\n");
uint8_t test_data2[] = "The quick brown fox jumps over the lazy dog";
size_t test_data2_len = sizeof(test_data2) - 1;
if (sc_encrypt(&client_ctx, test_data2, test_data2_len, ciphertext, &ciphertext_len) != SC_OK) {
printf("ERROR: Encryption of test data 2 failed\n");
return -1;
}
if (sc_decrypt(&server_ctx, ciphertext, ciphertext_len, decrypted, &decrypted_len) != SC_OK) {
printf("ERROR: Decryption of test data 2 failed\n");
return -1;
}
if (decrypted_len != test_data2_len || memcmp(test_data2, decrypted, test_data2_len) != 0) {
printf("ERROR: Test data 2 decryption mismatch\n");
return -1;
}
printf("✓ Different data test passed\n");
printf("\n=== All Crypto Tests Passed! ===\n");
return 0;
}
int main(void) {
printf("=== ETCP Crypto Test ===\n");
// Generate test keys
uint8_t server_priv[32], server_pub[32];
uint8_t client_priv[32], client_pub[32];
generate_test_keys(server_priv, server_pub, client_priv, client_pub);
// Create UDP sockets
int server_fd = create_udp_socket(TEST_PORT);
int client_fd = create_udp_socket(CLIENT_PORT);
if (server_fd < 0 || client_fd < 0) {
printf("ERROR: Failed to create sockets\n");
return 1;
// Test ETCP connection crypto
static int test_etcp_connection_crypto(void) {
printf("\n=== Testing ETCP Connection Crypto ===\n");
// Create a simple ETCP connection
struct ETCP_CONN* conn = calloc(1, sizeof(struct ETCP_CONN));
if (!conn) {
printf("ERROR: Failed to allocate ETCP connection\n");
return -1;
}
// Create ETCP instances
struct ETCP_CONN* server_etcp = calloc(1, sizeof(struct ETCP_CONN));
struct ETCP_CONN* client_etcp = calloc(1, sizeof(struct ETCP_CONN));
if (!server_etcp || !client_etcp) {
printf("ERROR: Failed to allocate ETCP instances\n");
return 1;
// Initialize connection basic parameters
conn->mtu = 1500;
conn->state = 1; // initialized
conn->peer_node_id = 0; // no peer yet
// Create test keys
struct SC_MYKEYS keys;
for (int i = 0; i < SC_PRIVKEY_SIZE; i++) {
keys.private_key[i] = i & 0xFF;
keys.public_key[i] = (i + 64) & 0xFF;
}
// Initialize secure channels
server_etcp->crypto_ctx = calloc(1, sizeof(sc_context_t));
client_etcp->crypto_ctx = calloc(1, sizeof(sc_context_t));
if (!server_etcp->crypto_ctx || !client_etcp->crypto_ctx) {
printf("ERROR: Failed to allocate crypto contexts\n");
return 1;
// Initialize crypto context
if (sc_init_ctx(&conn->crypto_ctx, &keys) != SC_OK) {
printf("ERROR: Failed to initialize connection crypto\n");
free(conn);
return -1;
}
printf("✓ ETCP connection crypto initialized\n");
// Set keys
memcpy(server_etcp->crypto_ctx->private_key, server_priv, 32);
memcpy(server_etcp->crypto_ctx->public_key, server_pub, 32);
server_etcp->crypto_ctx->initialized = 1;
// Test that we can use the crypto context for basic operations
uint8_t test_data[] = "ETCP connection test";
uint8_t encrypted[256];
uint8_t decrypted[256];
size_t encrypted_len, decrypted_len;
memcpy(client_etcp->crypto_ctx->private_key, client_priv, 32);
memcpy(client_etcp->crypto_ctx->public_key, client_pub, 32);
client_etcp->crypto_ctx->initialized = 1;
// Self-encryption test (set our own public key as peer)
memcpy(conn->crypto_ctx.peer_public_key, keys.public_key, SC_PUBKEY_SIZE);
conn->crypto_ctx.peer_key_set = 1;
// Client sets server's public key as peer
memcpy(client_etcp->peer_public_key, server_pub, 32);
client_etcp->has_peer_key = 1;
sc_set_peer_public_key(client_etcp->crypto_ctx, server_pub);
if (sc_encrypt(&conn->crypto_ctx, test_data, sizeof(test_data)-1, encrypted, &encrypted_len) != SC_OK) {
printf("ERROR: Connection encryption failed\n");
free(conn);
return -1;
}
printf("✓ Connection encryption works\n");
// Server will get client's public key from INIT packet
if (sc_decrypt(&conn->crypto_ctx, encrypted, encrypted_len, decrypted, &decrypted_len) != SC_OK) {
printf("ERROR: Connection decryption failed\n");
free(conn);
return -1;
}
// Create connections managers
struct ETCP_CONNECTIONS* server_conns = etcp_connections_init(server_etcp, "127.0.0.1", 0);
struct ETCP_CONNECTIONS* client_conns = etcp_connections_init(client_etcp, "127.0.0.1", 0);
if (!server_conns || !client_conns) {
printf("ERROR: Failed to create connections\n");
return 1;
if (decrypted_len != sizeof(test_data)-1 || memcmp(test_data, decrypted, sizeof(test_data)-1) != 0) {
printf("ERROR: Connection decryption mismatch\n");
free(conn);
return -1;
}
printf("✓ Connection decryption works\n");
// Create client link (client initiates connection)
struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
server_addr.sin_port = htons(TEST_PORT);
free(conn);
printf("✓ ETCP connection crypto test passed\n");
return 0;
}
int main(void) {
printf("=== ETCP Crypto Test Suite ===\n");
struct ETCP_LINK* client_link = etcp_link_new(client_etcp, &client_conns->socket, client_conns,
(struct sockaddr*)&server_addr, sizeof(server_addr));
if (!client_link) {
printf("ERROR: Failed to create client link\n");
int result1 = test_secure_channel_crypto();
if (result1 != 0) {
printf("ERROR: Secure channel crypto test failed\n");
return 1;
}
// Send INIT from client to server
printf("Sending INIT from client...\n");
if (etcp_link_send_init(client_link, 1500, 30) < 0) {
printf("ERROR: Failed to send INIT\n");
int result2 = test_etcp_connection_crypto();
if (result2 != 0) {
printf("ERROR: ETCP connection crypto test failed\n");
return 1;
}
// Server should receive INIT and create link
usleep(100000); // 100ms
struct sockaddr_in from_addr;
socklen_t from_len = sizeof(from_addr);
uint8_t buffer[2048];
ssize_t received = recvfrom(server_fd, buffer, sizeof(buffer), MSG_DONTWAIT,
(struct sockaddr*)&from_addr, &from_len);
if (received > 0) {
printf("Server received %zd bytes\n", received);
// Process packet on server
struct packet_buffer pkt;
memcpy(pkt.data, buffer, received);
pkt.metadata.data_len = received;
pkt.metadata.remote_addr = *(struct sockaddr_storage*)&from_addr;
pkt.metadata.s = &server_conns->socket;
if (etcp_input(&pkt, &server_conns->socket, server_conns) == 0) {
printf("Server processed INIT successfully\n");
// Check that server got client's public key
if (server_etcp->has_peer_key) {
printf("Server received client's public key\n");
}
}
}
// Test encrypted data transfer
printf("\nTesting encrypted data transfer...\n");
const char* test_data = TEST_DATA;
if (etcp_link_send(client_etcp, client_link, (const uint8_t*)test_data, TEST_DATA_LEN) == 0) {
printf("Client sent encrypted data\n");
}
usleep(100000);
received = recvfrom(server_fd, buffer, sizeof(buffer), MSG_DONTWAIT,
(struct sockaddr*)&from_addr, &from_len);
if (received > 0) {
printf("Server received %zd encrypted bytes\n", received);
// In real scenario, etcp_input would decrypt and process
}
// Print statistics
printf("\n=== Statistics ===\n");
size_t enc_err, dec_err, send_err, total_enc, total_dec;
etcp_connections_get_crypto_stats(server_conns, &enc_err, &dec_err, &send_err, NULL, &total_enc, &total_dec);
printf("Server: encrypted=%zu, decrypted=%zu, errors=%zu/%zu/%zu\n",
total_enc, total_dec, enc_err, dec_err, send_err);
etcp_connections_get_crypto_stats(client_conns, &enc_err, &dec_err, &send_err, NULL, &total_enc, &total_dec);
printf("Client: encrypted=%zu, decrypted=%zu, errors=%zu/%zu/%zu\n",
total_enc, total_dec, enc_err, dec_err, send_err);
// Cleanup
close(server_fd);
close(client_fd);
free(server_etcp->crypto_ctx);
free(client_etcp->crypto_ctx);
free(server_etcp);
free(client_etcp);
printf("\n=== Test completed ===\n");
printf("\n🎉 All crypto tests passed successfully!\n");
return 0;
}
}
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