107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
#include <chrono>
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#include <iostream>
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#include <optional>
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#include <stdint.h>
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#include <string>
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#include <vector>
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#include "cxxopts.hpp"
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#include "json.hpp"
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#include "expiring_signature.h"
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#include "receiver.h"
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#include "sender.h"
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#include "signing_key.h"
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#include "sodium_helpers.h"
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#include "string_helpers.h"
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#include "time_helpers.h"
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using namespace std;
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using nlohmann::json;
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using namespace BareMinimumCrypto;
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int test () {
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if (test_base64 () != 0) {
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return 1;
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}
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// We generate a root key and keep it somewhere safe
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// (offline, hopefully)
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SigningKey root_key;
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cerr << "Root pub key " << base64_encode (root_key.pubkey ()) << endl;
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if (test_time () != 0) {
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return 1;
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}
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const auto now = Instant::now ();
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// The sender generates a key
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SigningKey sender_key;
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cerr << "Sender key " << base64_encode (sender_key.pubkey ()) << endl;
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// The root signs the sender key
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const ExpiringSignature sender_cert = std::move (*root_key.sign_key (sender_key, now));
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const auto sender = std::move (*Sender::create (sender_key, sender_cert));
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// The sender signs some important data
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const auto important_data = copy_to_bytes ("Nikolai, Anna, Ivan, Mikhail, Ivan, Nikolai, Anna. 7 4 1 4 3 5 7 4");
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const auto signed_data = std::move (*sender.sign (important_data));
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// The receiver verifies the data by the root public key,
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// even though the receiver has never seen the sender-key.
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auto verified_opt = Receiver::verify_cert_and_data (root_key.pubkey (), signed_data);
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if (! verified_opt) {
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cerr << "Receiver couldn't verify cert and data" << endl;
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return 1;
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}
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const auto verified = std::move (*verified_opt);
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if (verified != important_data) {
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cerr << "Verified payload did not match expected payload" << endl;
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return 1;
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}
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return 0;
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}
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int main (int argc, char ** argv) {
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cxxopts::Options options ("BareMinimumCrypto", "Simple crypto things you might need.");
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options.add_options ()
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("generate-ca-key", "Generate a passphrase-protected certificate authority key", cxxopts::value <string> ())
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("check-ca-key", "Read information from a CA key without decrypting it")
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("test", "Run self-test")
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("help", "Print usage")
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;
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auto result = options.parse (argc, argv);
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if (result.count ("help")) {
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cout << options.help () << endl;
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}
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else if (result.count ("generate-ca-key")) {
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const auto file_path = result ["generate-ca-key"].as <string> ();
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cout << "Type passphrase (it will be visible in the console)" << endl;
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string passphrase;
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cin >> passphrase;
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auto key_opt = SigningKey::generate_to_file (file_path, passphrase);
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if (! key_opt) {
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cerr << "Error. Key was not generated" << endl;
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return 1;
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}
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cout << "The pubkey is `" << base64_encode (key_opt->pubkey ()) << "`" << endl;
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}
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else if (result.count ("test")) {
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if (test () != 0) {
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return 1;
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}
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cerr << "All good." << endl;
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}
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return 0;
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}
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