/* * ECDSA Tests * * (C) 2007 Falko Strenzke * 2007 Manuel Hartl * 2008,2015 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ #include "tests.h" #include #if defined(BOTAN_HAS_ECDSA) #include #include #include #include #include #endif #if defined(BOTAN_HAS_X509_CERTIFICATES) #include #endif namespace Botan_Tests { namespace { #if defined(BOTAN_HAS_ECDSA) /** * Tests whether the the signing routine will work correctly in case * the integer e that is constructed from the message (thus the hash * value) is larger than n, the order of the base point. Tests the * signing function of the pk signer object */ Test::Result test_hash_larger_than_n() { Test::Result result("ECDSA Unit"); Botan::EC_Group dom_pars(Botan::OIDS::lookup("1.3.132.0.8")); // secp160r1 // n = 0x0100000000000000000001f4c8f927aed3ca752257 (21 bytes) // -> shouldn't work with SHA224 which outputs 28 bytes Botan::ECDSA_PrivateKey priv_key(Test::rng(), dom_pars); std::vector message(20); for(size_t i = 0; i != message.size(); ++i) message[i] = i; Botan::PK_Signer pk_signer_160(priv_key, "EMSA1_BSI(SHA-1)"); Botan::PK_Verifier pk_verifier_160(priv_key, "EMSA1_BSI(SHA-1)"); Botan::PK_Signer pk_signer_224(priv_key, "EMSA1_BSI(SHA-224)"); // Verify we can sign and verify with SHA-160 std::vector signature_160 = pk_signer_160.sign_message(message, Test::rng()); result.test_eq("message verifies", pk_verifier_160.verify_message(message, signature_160), true); try { std::vector signature_224 = pk_signer_224.sign_message(message, Test::rng()); result.test_failure("bad key/hash combination not rejected"); } catch(Botan::Encoding_Error) { result.test_note("bad key/hash combination rejected"); } // now check that verification alone fails // sign it with the normal EMSA1 Botan::PK_Signer pk_signer(priv_key, "EMSA1(SHA-224)"); std::vector signature = pk_signer.sign_message(message, Test::rng()); Botan::PK_Verifier pk_verifier(priv_key, "EMSA1_BSI(SHA-224)"); result.test_eq("corrupt message does not verify", pk_verifier.verify_message(message, signature), false); return result; } #if defined(BOTAN_HAS_X509_CERTIFICATES) Test::Result test_decode_ecdsa_X509() { Test::Result result("ECDSA Unit"); Botan::X509_Certificate cert(Test::data_file("ecc/CSCA.CSCA.csca-germany.1.crt")); result.test_eq("correct signature oid", Botan::OIDS::lookup(cert.signature_algorithm().oid), "ECDSA/EMSA1(SHA-224)"); result.test_eq("serial number", cert.serial_number(), Botan::hex_decode("01")); result.test_eq("authority key id", cert.authority_key_id(), cert.subject_key_id()); result.test_eq("key fingerprint", cert.fingerprint("SHA-1"), "32:42:1C:C3:EC:54:D7:E9:43:EC:51:F0:19:23:BD:85:1D:F2:1B:B9"); std::unique_ptr pubkey(cert.subject_public_key()); result.test_eq("verify self-signed signature", cert.check_signature(*pubkey), true); return result; } Test::Result test_decode_ver_link_SHA256() { Test::Result result("ECDSA Unit"); Botan::X509_Certificate root_cert(Test::data_file("ecc/root2_SHA256.cer")); Botan::X509_Certificate link_cert(Test::data_file("ecc/link_SHA256.cer")); std::unique_ptr pubkey(root_cert.subject_public_key()); result.confirm("verified self-signed signature", link_cert.check_signature(*pubkey)); return result; } Test::Result test_decode_ver_link_SHA1() { Botan::X509_Certificate root_cert(Test::data_file("ecc/root_SHA1.163.crt")); Botan::X509_Certificate link_cert(Test::data_file("ecc/link_SHA1.166.crt")); Test::Result result("ECDSA Unit"); std::unique_ptr pubkey(root_cert.subject_public_key()); result.confirm("verified self-signed signature", link_cert.check_signature(*pubkey)); return result; } #endif Test::Result test_sign_then_ver() { Test::Result result("ECDSA Unit"); Botan::EC_Group dom_pars(Botan::OID("1.3.132.0.8")); Botan::ECDSA_PrivateKey ecdsa(Test::rng(), dom_pars); Botan::PK_Signer signer(ecdsa, "EMSA1(SHA-1)"); auto msg = Botan::hex_decode("12345678901234567890abcdef12"); std::vector sig = signer.sign_message(msg, Test::rng()); Botan::PK_Verifier verifier(ecdsa, "EMSA1(SHA-1)"); result.confirm("signature verifies", verifier.verify_message(msg, sig)); result.confirm("invalid signature rejected", !verifier.verify_message(msg, Test::mutate_vec(sig))); return result; } Test::Result test_ec_sign() { Test::Result result("ECDSA Unit"); try { Botan::EC_Group dom_pars(Botan::OID("1.3.132.0.8")); Botan::ECDSA_PrivateKey priv_key(Test::rng(), dom_pars); std::string pem_encoded_key = Botan::PKCS8::PEM_encode(priv_key); Botan::PK_Signer signer(priv_key, "EMSA1(SHA-224)"); Botan::PK_Verifier verifier(priv_key, "EMSA1(SHA-224)"); for(size_t i = 0; i != 256; ++i) { signer.update(static_cast(i)); } std::vector sig = signer.signature(Test::rng()); for(size_t i = 0; i != 256; ++i) { verifier.update(static_cast(i)); } result.test_eq("ECDSA signature valid", verifier.check_signature(sig), true); // now check valid signature, different input for(size_t i = 1; i != 256; ++i) //starting from 1 { verifier.update(static_cast(i)); } result.test_eq("invalid ECDSA signature invalid", verifier.check_signature(sig), false); // now check with original input, modified signature sig[sig.size()/2]++; for(size_t i = 0; i != 256; ++i) verifier.update(static_cast(i)); result.test_eq("invalid ECDSA signature invalid", verifier.check_signature(sig), false); } catch(std::exception& e) { result.test_failure("test_ec_sign", e.what()); } return result; } Test::Result test_ecdsa_create_save_load() { Test::Result result("ECDSA Unit"); std::string ecc_private_key_pem; const std::vector msg = Botan::hex_decode("12345678901234567890abcdef12"); std::vector msg_signature; try { Botan::EC_Group dom_pars(Botan::OID("1.3.132.0.8")); Botan::ECDSA_PrivateKey key(Test::rng(), dom_pars); Botan::PK_Signer signer(key, "EMSA1(SHA-1)"); msg_signature = signer.sign_message(msg, Test::rng()); ecc_private_key_pem = Botan::PKCS8::PEM_encode(key); } catch(std::exception& e) { result.test_failure("create_pkcs8", e.what()); } Botan::DataSource_Memory pem_src(ecc_private_key_pem); std::unique_ptr loaded_key(Botan::PKCS8::load_key(pem_src, Test::rng())); Botan::ECDSA_PrivateKey* loaded_ec_key = dynamic_cast(loaded_key.get()); result.confirm("the loaded key could be converted into an ECDSA_PrivateKey", loaded_ec_key); Botan::PK_Verifier verifier(*loaded_ec_key, "EMSA1(SHA-1)"); result.confirm("generated signature valid", verifier.verify_message(msg, msg_signature)); return result; } Test::Result test_unusual_curve() { Test::Result result("ECDSA Unit"); //calc a curve which is not in the registry const std::string G_secp_comp = "04081523d03d4f12cd02879dea4bf6a4f3a7df26ed888f10c5b2235a1274c386a2f218300dee6ed217841164533bcdc903f07a096f9fbf4ee95bac098a111f296f5830fe5c35b3e344d5df3a2256985f64fbe6d0edcc4c61d18bef681dd399df3d0194c5a4315e012e0245ecea56365baa9e8be1f7"; const Botan::BigInt bi_p_secp("2117607112719756483104013348936480976596328609518055062007450442679169492999007105354629105748524349829824407773719892437896937279095106809"); const Botan::BigInt bi_a_secp("0x0a377dede6b523333d36c78e9b0eaa3bf48ce93041f6d4fc34014d08f6833807498deedd4290101c5866e8dfb589485d13357b9e78c2d7fbe9fe"); const Botan::BigInt bi_b_secp("0x0a9acf8c8ba617777e248509bcb4717d4db346202bf9e352cd5633731dd92a51b72a4dc3b3d17c823fcc8fbda4da08f25dea89046087342595a7"); Botan::BigInt bi_order_g("0x0e1a16196e6000000000bc7f1618d867b15bb86474418f"); Botan::CurveGFp curve(bi_p_secp, bi_a_secp, bi_b_secp); Botan::PointGFp p_G = Botan::OS2ECP(Botan::hex_decode(G_secp_comp), curve); Botan::EC_Group dom_params(curve, p_G, bi_order_g, Botan::BigInt(1)); if(!result.confirm("point is on curve", p_G.on_the_curve())) return result; Botan::ECDSA_PrivateKey key_odd_curve(Test::rng(), dom_params); std::string key_odd_curve_str = Botan::PKCS8::PEM_encode(key_odd_curve); Botan::DataSource_Memory key_data_src(key_odd_curve_str); std::unique_ptr loaded_key(Botan::PKCS8::load_key(key_data_src, Test::rng())); result.confirm("reloaded key", loaded_key.get()); return result; } Test::Result test_read_pkcs8() { Test::Result result("ECDSA Unit"); const std::vector msg = Botan::hex_decode("12345678901234567890abcdef12"); try { std::unique_ptr loaded_key_nodp(Botan::PKCS8::load_key(Test::data_file("ecc/nodompar_private.pkcs8.pem"), Test::rng())); // anew in each test with unregistered domain-parameters Botan::ECDSA_PrivateKey* ecdsa_nodp = dynamic_cast(loaded_key_nodp.get()); result.confirm("key loaded", ecdsa_nodp); Botan::PK_Signer signer(*ecdsa_nodp, "EMSA1(SHA-1)"); Botan::PK_Verifier verifier(*ecdsa_nodp, "EMSA1(SHA-1)"); std::vector signature_nodp = signer.sign_message(msg, Test::rng()); result.confirm("signature valid", verifier.verify_message(msg, signature_nodp)); try { std::unique_ptr loaded_key_withdp( Botan::PKCS8::load_key(Test::data_file("ecc/withdompar_private.pkcs8.pem"), Test::rng())); result.test_failure("loaded key with unknown OID"); } catch(std::exception& e) { result.test_note("rejected key with unknown OID"); } } catch(std::exception& e) { result.test_failure("read_pkcs8", e.what()); } return result; } Test::Result test_curve_registry() { const std::vector oids = { "1.3.132.0.8", "1.2.840.10045.3.1.1", "1.2.840.10045.3.1.2", "1.2.840.10045.3.1.3", "1.2.840.10045.3.1.4", "1.2.840.10045.3.1.5", "1.2.840.10045.3.1.6", "1.2.840.10045.3.1.7", "1.3.132.0.9", "1.3.132.0.30", "1.3.132.0.31", "1.3.132.0.32", "1.3.132.0.33", "1.3.132.0.10", "1.3.132.0.34", "1.3.132.0.35", "1.3.36.3.3.2.8.1.1.1", "1.3.36.3.3.2.8.1.1.3", "1.3.36.3.3.2.8.1.1.5", "1.3.36.3.3.2.8.1.1.7", "1.3.36.3.3.2.8.1.1.9", "1.3.36.3.3.2.8.1.1.11", "1.3.36.3.3.2.8.1.1.13", }; Test::Result result("ECDSA Unit"); for(auto&& oid_str : oids) { try { Botan::OID oid(oid_str); Botan::EC_Group dom_pars(oid); Botan::ECDSA_PrivateKey ecdsa(Test::rng(), dom_pars); Botan::PK_Signer signer(ecdsa, "EMSA1(SHA-1)"); Botan::PK_Verifier verifier(ecdsa, "EMSA1(SHA-1)"); auto msg = Botan::hex_decode("12345678901234567890abcdef12"); std::vector sig = signer.sign_message(msg, Test::rng()); result.confirm("verified signature", verifier.verify_message(msg, sig)); } catch(Botan::Invalid_Argument& e) { result.test_failure("testing " + oid_str + ": " + e.what()); } } return result; } Test::Result test_ecc_key_with_rfc5915_extensions() { Test::Result result("ECDSA Unit"); try { std::unique_ptr pkcs8( Botan::PKCS8::load_key(Test::data_file("ecc/ecc_private_with_rfc5915_ext.pem"), Test::rng())); result.confirm("loaded RFC 5914 key", pkcs8.get()); result.test_eq("key is ECDSA", pkcs8->algo_name(), "ECDSA"); result.confirm("key type is ECDSA", dynamic_cast(pkcs8.get())); } catch(std::exception& e) { result.test_failure("load_rfc5915", e.what()); } return result; } class ECDSA_Unit_Tests : public Test { public: std::vector run() override { std::vector results; results.push_back(test_hash_larger_than_n()); #if defined(BOTAN_HAS_X509_CERTIFICATES) results.push_back(test_decode_ecdsa_X509()); results.push_back(test_decode_ver_link_SHA256()); results.push_back(test_decode_ver_link_SHA1()); #endif results.push_back(test_sign_then_ver()); results.push_back(test_ec_sign()); results.push_back(test_read_pkcs8()); results.push_back(test_ecdsa_create_save_load()); results.push_back(test_unusual_curve()); results.push_back(test_curve_registry()); results.push_back(test_ecc_key_with_rfc5915_extensions()); return results; } }; BOTAN_REGISTER_TEST("ecdsa_unit", ECDSA_Unit_Tests); #endif } }