/* * (C) 2009,2015 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ #include "test_pubkey.h" #if defined(BOTAN_HAS_PUBLIC_KEY_CRYPTO) #include "test_rng.h" #include <botan/pubkey.h> #include <botan/x509_key.h> #include <botan/pkcs8.h> #include <botan/oids.h> #include <botan/hex.h> namespace Botan_Tests { namespace { std::vector<std::string> possible_pk_providers() { return { "base", "openssl", "tpm" }; } } void check_invalid_signatures(Test::Result& result, Botan::PK_Verifier& verifier, const std::vector<uint8_t>& message, const std::vector<uint8_t>& signature) { const std::vector<uint8_t> zero_sig(signature.size()); result.test_eq("all zero signature invalid", verifier.verify_message(message, zero_sig), false); std::vector<uint8_t> bad_sig = signature; for(size_t i = 0; i <= Test::soak_level(); ++i) { while(bad_sig == signature) bad_sig = Test::mutate_vec(bad_sig, true); if(!result.test_eq("incorrect signature invalid", verifier.verify_message(message, bad_sig), false)) { result.test_note("Accepted invalid signature " + Botan::hex_encode(bad_sig)); } } } void check_invalid_ciphertexts(Test::Result& result, Botan::PK_Decryptor& decryptor, const std::vector<uint8_t>& plaintext, const std::vector<uint8_t>& ciphertext) { std::vector<uint8_t> bad_ctext = ciphertext; size_t ciphertext_accepted = 0, ciphertext_rejected = 0; for(size_t i = 0; i <= Test::soak_level(); ++i) { while(bad_ctext == ciphertext) bad_ctext = Test::mutate_vec(bad_ctext, true); try { const Botan::secure_vector<uint8_t> decrypted = decryptor.decrypt(bad_ctext); ++ciphertext_accepted; if(!result.test_ne("incorrect ciphertext different", decrypted, plaintext)) { result.test_eq("used corrupted ciphertext", bad_ctext, ciphertext); } } catch(std::exception&) { ++ciphertext_rejected; } } result.test_note("Accepted " + std::to_string(ciphertext_accepted) + " invalid ciphertexts, rejected " + std::to_string(ciphertext_rejected)); } Test::Result PK_Signature_Generation_Test::run_one_test(const std::string&, const VarMap& vars) { const std::vector<uint8_t> message = get_req_bin(vars, "Msg"); const std::vector<uint8_t> signature = get_req_bin(vars, "Signature"); const std::string padding = get_opt_str(vars, "Padding", default_padding(vars)); Test::Result result(algo_name() + "/" + padding + " signature generation"); std::unique_ptr<Botan::Private_Key> privkey = load_private_key(vars); std::unique_ptr<Botan::Public_Key> pubkey(Botan::X509::load_key(Botan::X509::BER_encode(*privkey))); for(auto&& sign_provider : possible_pk_providers()) { std::unique_ptr<Botan::PK_Signer> signer; try { signer.reset(new Botan::PK_Signer(*privkey, padding, Botan::IEEE_1363, sign_provider)); } catch(Botan::Lookup_Error&) { //result.test_note("Skipping signing with " + sign_provider); continue; } std::unique_ptr<Botan::RandomNumberGenerator> rng; if(vars.count("Nonce")) { rng.reset(new Fixed_Output_RNG(get_req_bin(vars, "Nonce"))); } const std::vector<uint8_t> generated_signature = signer->sign_message(message, rng ? *rng : Test::rng()); if(sign_provider == "base") { result.test_eq("generated signature matches KAT", generated_signature, signature); } for(auto&& verify_provider : possible_pk_providers()) { std::unique_ptr<Botan::PK_Verifier> verifier; try { verifier.reset(new Botan::PK_Verifier(*pubkey, padding, Botan::IEEE_1363, verify_provider)); } catch(Botan::Lookup_Error&) { //result.test_note("Skipping verifying with " + verify_provider); continue; } if(!result.test_eq("generated signature valid", verifier->verify_message(message, generated_signature), true)) { result.test_failure("generated signature", generated_signature); } check_invalid_signatures(result, *verifier, message, signature); result.test_eq("KAT signature valid", verifier->verify_message(message, signature), true); } } return result; } Test::Result PK_Signature_Verification_Test::run_one_test(const std::string&, const VarMap& vars) { const std::vector<uint8_t> message = get_req_bin(vars, "Msg"); const std::vector<uint8_t> signature = get_req_bin(vars, "Signature"); const std::string padding = get_opt_str(vars, "Padding", default_padding(vars)); std::unique_ptr<Botan::Public_Key> pubkey = load_public_key(vars); Test::Result result(algo_name() + "/" + padding + " signature verification"); for(auto&& verify_provider : possible_pk_providers()) { std::unique_ptr<Botan::PK_Verifier> verifier; try { verifier.reset(new Botan::PK_Verifier(*pubkey, padding, Botan::IEEE_1363, verify_provider)); result.test_eq("correct signature valid", verifier->verify_message(message, signature), true); check_invalid_signatures(result, *verifier, message, signature); } catch(Botan::Lookup_Error&) { result.test_note("Skipping verifying with " + verify_provider); } } return result; } Test::Result PK_Encryption_Decryption_Test::run_one_test(const std::string&, const VarMap& vars) { const std::vector<uint8_t> plaintext = get_req_bin(vars, "Msg"); const std::vector<uint8_t> ciphertext = get_req_bin(vars, "Ciphertext"); const std::string padding = get_opt_str(vars, "Padding", default_padding(vars)); Test::Result result(algo_name() + "/" + padding + " decryption"); std::unique_ptr<Botan::Private_Key> privkey = load_private_key(vars); // instead slice the private key to work around elgamal test inputs //std::unique_ptr<Botan::Public_Key> pubkey(Botan::X509::load_key(Botan::X509::BER_encode(*privkey))); Botan::Public_Key* pubkey = privkey.get(); for(auto&& enc_provider : possible_pk_providers()) { std::unique_ptr<Botan::PK_Encryptor> encryptor; try { encryptor.reset(new Botan::PK_Encryptor_EME(*pubkey, padding, enc_provider)); } catch(Botan::Lookup_Error&) { //result.test_note("Skipping encryption with provider " + enc_provider); continue; } std::unique_ptr<Botan::RandomNumberGenerator> kat_rng; if(vars.count("Nonce")) { kat_rng.reset(new Fixed_Output_RNG(get_req_bin(vars, "Nonce"))); } const std::vector<uint8_t> generated_ciphertext = encryptor->encrypt(plaintext, kat_rng ? *kat_rng : Test::rng()); if(enc_provider == "base") { result.test_eq("generated ciphertext matches KAT", generated_ciphertext, ciphertext); } for(auto&& dec_provider : possible_pk_providers()) { std::unique_ptr<Botan::PK_Decryptor> decryptor; try { decryptor.reset(new Botan::PK_Decryptor_EME(*privkey, padding, dec_provider)); } catch(Botan::Lookup_Error&) { //result.test_note("Skipping decryption with provider " + dec_provider); continue; } result.test_eq("decryption of KAT", decryptor->decrypt(ciphertext), plaintext); check_invalid_ciphertexts(result, *decryptor, plaintext, ciphertext); result.test_eq("decryption of generated ciphertext", decryptor->decrypt(generated_ciphertext), plaintext); } } return result; } Test::Result PK_KEM_Test::run_one_test(const std::string&, const VarMap& vars) { const std::vector<uint8_t> K = get_req_bin(vars, "K"); const std::vector<uint8_t> C0 = get_req_bin(vars, "C0"); const std::vector<uint8_t> salt = get_opt_bin(vars, "Salt"); const std::string kdf = get_req_str(vars, "KDF"); Test::Result result(algo_name() + "/" + kdf + " KEM"); std::unique_ptr<Botan::Private_Key> privkey = load_private_key(vars); const Botan::Public_Key& pubkey = *privkey; const size_t desired_key_len = K.size(); std::unique_ptr<Botan::PK_KEM_Encryptor> enc; try { enc.reset(new Botan::PK_KEM_Encryptor(pubkey, kdf)); } catch(Botan::Lookup_Error&) { return result; } Fixed_Output_RNG fixed_output_rng(get_req_bin(vars, "R")); Botan::secure_vector<byte> produced_encap_key, shared_key; enc->encrypt(produced_encap_key, shared_key, desired_key_len, fixed_output_rng, salt); result.test_eq("C0 matches", produced_encap_key, C0); result.test_eq("K matches", shared_key, K); std::unique_ptr<Botan::PK_KEM_Decryptor> dec; try { dec.reset(new Botan::PK_KEM_Decryptor(*privkey, kdf)); } catch(Botan::Lookup_Error&) { return result; } const Botan::secure_vector<uint8_t> decr_shared_key = dec->decrypt(C0.data(), C0.size(), desired_key_len, salt.data(), salt.size()); result.test_eq("decrypted K matches", decr_shared_key, K); return result; } Test::Result PK_Key_Agreement_Test::run_one_test(const std::string& header, const VarMap& vars) { const std::vector<uint8_t> shared = get_req_bin(vars, "K"); const std::string kdf = get_opt_str(vars, "KDF", default_kdf(vars)); Test::Result result(algo_name() + "/" + kdf + (header.empty() ? header : " " + header) + " key agreement"); std::unique_ptr<Botan::Private_Key> privkey = load_our_key(header, vars); const std::vector<uint8_t> pubkey = load_their_key(header, vars); const size_t key_len = get_opt_sz(vars, "OutLen", 0); for(auto&& provider : possible_pk_providers()) { std::unique_ptr<Botan::PK_Key_Agreement> kas; try { kas.reset(new Botan::PK_Key_Agreement(*privkey, kdf, provider)); result.test_eq(provider, "agreement", kas->derive_key(key_len, pubkey).bits_of(), shared); } catch(Botan::Lookup_Error&) { //result.test_note("Skipping key agreement with with " + provider); } } return result; } std::vector<Test::Result> PK_Key_Generation_Test::run() { std::vector<Test::Result> results; for(auto&& param : keygen_params()) { std::unique_ptr<Botan::Private_Key> key = make_key(Test::rng(), param); const std::string report_name = key->algo_name() + (param.empty() ? param : " " + param); results.push_back(test_key(report_name, *key)); } return results; } Test::Result PK_Key_Generation_Test::test_key(const std::string& algo, const Botan::Private_Key& key) { Test::Result result(algo + " keygen"); try { Botan::DataSource_Memory data_src(Botan::X509::PEM_encode(key)); std::unique_ptr<Botan::Public_Key> loaded(Botan::X509::load_key(data_src)); result.test_eq("recovered public key from private", loaded.get(), true); result.test_eq("public key has same type", loaded->algo_name(), key.algo_name()); result.test_eq("public key passes checks", loaded->check_key(Test::rng(), false), true); } catch(std::exception& e) { result.test_failure("roundtrip PEM public key", e.what()); } try { Botan::DataSource_Memory data_src(Botan::X509::BER_encode(key)); std::unique_ptr<Botan::Public_Key> loaded(Botan::X509::load_key(data_src)); result.test_eq("recovered public key from private", loaded.get(), true); result.test_eq("public key has same type", loaded->algo_name(), key.algo_name()); result.test_eq("public key passes checks", loaded->check_key(Test::rng(), false), true); } catch(std::exception& e) { result.test_failure("roundtrip BER public key", e.what()); } try { Botan::DataSource_Memory data_src(Botan::PKCS8::PEM_encode(key)); std::unique_ptr<Botan::Private_Key> loaded( Botan::PKCS8::load_key(data_src, Test::rng())); result.test_eq("recovered private key from PEM blob", loaded.get(), true); result.test_eq("reloaded key has same type", loaded->algo_name(), key.algo_name()); result.test_eq("private key passes checks", loaded->check_key(Test::rng(), false), true); } catch(std::exception& e) { result.test_failure("roundtrip PEM private key", e.what()); } try { Botan::DataSource_Memory data_src(Botan::PKCS8::BER_encode(key)); std::unique_ptr<Botan::Public_Key> loaded(Botan::PKCS8::load_key(data_src, Test::rng())); result.test_eq("recovered public key from private", loaded.get(), true); result.test_eq("public key has same type", loaded->algo_name(), key.algo_name()); result.test_eq("public key passes checks", loaded->check_key(Test::rng(), false), true); } catch(std::exception& e) { result.test_failure("roundtrip BER private key", e.what()); } const std::string passphrase = Test::random_password(); try { Botan::DataSource_Memory data_src( Botan::PKCS8::PEM_encode(key, Test::rng(), passphrase, std::chrono::milliseconds(10))); std::unique_ptr<Botan::Private_Key> loaded( Botan::PKCS8::load_key(data_src, Test::rng(), passphrase)); result.test_eq("recovered private key from encrypted blob", loaded.get(), true); result.test_eq("reloaded key has same type", loaded->algo_name(), key.algo_name()); result.test_eq("private key passes checks", loaded->check_key(Test::rng(), false), true); } catch(std::exception& e) { result.test_failure("roundtrip encrypted PEM private key", e.what()); } try { Botan::DataSource_Memory data_src( Botan::PKCS8::BER_encode(key, Test::rng(), passphrase, std::chrono::milliseconds(10))); std::unique_ptr<Botan::Private_Key> loaded( Botan::PKCS8::load_key(data_src, Test::rng(), passphrase)); result.test_eq("recovered private key from BER blob", loaded.get(), true); result.test_eq("reloaded key has same type", loaded->algo_name(), key.algo_name()); result.test_eq("private key passes checks", loaded->check_key(Test::rng(), false), true); } catch(std::exception& e) { result.test_failure("roundtrip encrypted BER private key", e.what()); } return result; } } #endif