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460 lines
14 KiB
460 lines
14 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file crypto.cpp
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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* Crypto test functions.
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*/
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#include <random>
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#include <secp256k1/secp256k1.h>
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#include <libdevcore/Common.h>
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#include <libdevcore/RLP.h>
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#include <libdevcore/Log.h>
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#include <libethereum/Transaction.h>
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#include <boost/test/unit_test.hpp>
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#include <libdevcrypto/EC.h>
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#include "TestHelperCrypto.h"
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using namespace std;
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using namespace dev;
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using namespace dev::crypto;
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using namespace CryptoPP;
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BOOST_AUTO_TEST_SUITE(devcrypto)
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BOOST_AUTO_TEST_CASE(common_encrypt_decrypt)
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{
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string message("Now is the time for all good persons to come to the aide of humanity.");
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bytes m = asBytes(message);
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bytesConstRef bcr(&m);
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KeyPair k = KeyPair::create();
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bytes cipher;
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encrypt(k.pub(), bcr, cipher);
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assert(cipher != asBytes(message) && cipher.size() > 0);
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bytes plain;
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decrypt(k.sec(), bytesConstRef(&cipher), plain);
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assert(asString(plain) == message);
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assert(plain == asBytes(message));
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}
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BOOST_AUTO_TEST_CASE(cryptopp_vs_secp256k1)
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{
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ECIES<ECP>::Decryptor d(pp::PRNG(), pp::secp256k1());
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ECIES<ECP>::Encryptor e(d.GetKey());
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Secret s;
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pp::SecretFromDL_PrivateKey_EC(d.GetKey(), s);
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Public p;
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pp::PublicFromDL_PublicKey_EC(e.GetKey(), p);
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assert(dev::toAddress(s) == right160(dev::sha3(p.ref())));
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Secret previous = s;
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for (auto i = 0; i < 30; i++)
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{
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ECIES<ECP>::Decryptor d(pp::PRNG(), pp::secp256k1());
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ECIES<ECP>::Encryptor e(d.GetKey());
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Secret s;
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pp::SecretFromDL_PrivateKey_EC(d.GetKey(), s);
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assert(s != previous);
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Public p;
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pp::PublicFromDL_PublicKey_EC(e.GetKey(), p);
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assert(dev::toAddress(s) == right160(dev::sha3(p.ref())));
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}
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}
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BOOST_AUTO_TEST_CASE(cryptopp_keys_cryptor_sipaseckp256k1)
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{
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KeyPair k = KeyPair::create();
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Secret s = k.sec();
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// Convert secret to exponent used by pp
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Integer e = pp::ExponentFromSecret(s);
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// Test that exported DL_EC private is same as exponent from Secret
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CryptoPP::DL_PrivateKey_EC<CryptoPP::ECP> privatek;
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privatek.AccessGroupParameters().Initialize(pp::secp256k1());
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privatek.SetPrivateExponent(e);
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assert(e == privatek.GetPrivateExponent());
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// Test that exported secret is same as decryptor(privatek) secret
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ECIES<ECP>::Decryptor d;
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d.AccessKey().AccessGroupParameters().Initialize(pp::secp256k1());
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d.AccessKey().SetPrivateExponent(e);
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assert(d.AccessKey().GetPrivateExponent() == e);
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// Test that decryptor->encryptor->public == private->makepublic->public
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CryptoPP::DL_PublicKey_EC<CryptoPP::ECP> pubk;
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pubk.AccessGroupParameters().Initialize(pp::secp256k1());
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privatek.MakePublicKey(pubk);
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ECIES<ECP>::Encryptor enc(d);
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assert(pubk.GetPublicElement() == enc.AccessKey().GetPublicElement());
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// Test against sipa/seckp256k1
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Public p;
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pp::PublicFromExponent(pp::ExponentFromSecret(s), p);
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assert(toAddress(s) == dev::right160(dev::sha3(p.ref())));
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assert(k.pub() == p);
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}
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BOOST_AUTO_TEST_CASE(cryptopp_public_export_import)
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{
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ECIES<ECP>::Decryptor d(pp::PRNG(), pp::secp256k1());
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ECIES<ECP>::Encryptor e(d.GetKey());
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Secret s;
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pp::SecretFromDL_PrivateKey_EC(d.GetKey(), s);
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Public p;
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pp::PublicFromDL_PublicKey_EC(e.GetKey(), p);
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Address addr = right160(dev::sha3(p.ref()));
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assert(toAddress(s) == addr);
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KeyPair l(s);
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assert(l.address() == addr);
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DL_PublicKey_EC<ECP> pub;
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pub.Initialize(pp::secp256k1(), pp::PointFromPublic(p));
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assert(pub.GetPublicElement() == e.GetKey().GetPublicElement());
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KeyPair k = KeyPair::create();
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Public p2;
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pp::PublicFromExponent(pp::ExponentFromSecret(k.sec()), p2);
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assert(k.pub() == p2);
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Address a = k.address();
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Address a2 = toAddress(k.sec());
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assert(a2 == a);
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}
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BOOST_AUTO_TEST_CASE(ecies_eckeypair)
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{
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KeyPair k = KeyPair::create();
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string message("Now is the time for all good persons to come to the aide of humanity.");
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string original = message;
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bytes b = asBytes(message);
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encrypt(k.pub(), b);
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assert(b != asBytes(original));
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decrypt(k.sec(), b);
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assert(b == asBytes(original));
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}
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BOOST_AUTO_TEST_CASE(ecdhe_aes128_ctr_sha3mac)
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{
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// New connections require new ECDH keypairs
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// Every new connection requires a new EC keypair
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// Every new trust requires a new EC keypair
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// All connections should share seed for PRF (or PRNG) for nonces
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}
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BOOST_AUTO_TEST_CASE(cryptopp_ecies_message)
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{
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cnote << "Testing cryptopp_ecies_message...";
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string const message("Now is the time for all good persons to come to the aide of humanity.");
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ECIES<ECP>::Decryptor localDecryptor(pp::PRNG(), pp::secp256k1());
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SavePrivateKey(localDecryptor.GetPrivateKey());
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ECIES<ECP>::Encryptor localEncryptor(localDecryptor);
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SavePublicKey(localEncryptor.GetPublicKey());
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ECIES<ECP>::Decryptor futureDecryptor;
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LoadPrivateKey(futureDecryptor.AccessPrivateKey());
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futureDecryptor.GetPrivateKey().ThrowIfInvalid(pp::PRNG(), 3);
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ECIES<ECP>::Encryptor futureEncryptor;
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LoadPublicKey(futureEncryptor.AccessPublicKey());
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futureEncryptor.GetPublicKey().ThrowIfInvalid(pp::PRNG(), 3);
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// encrypt/decrypt with local
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string cipherLocal;
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StringSource ss1 (message, true, new PK_EncryptorFilter(pp::PRNG(), localEncryptor, new StringSink(cipherLocal) ) );
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string plainLocal;
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StringSource ss2 (cipherLocal, true, new PK_DecryptorFilter(pp::PRNG(), localDecryptor, new StringSink(plainLocal) ) );
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// encrypt/decrypt with future
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string cipherFuture;
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StringSource ss3 (message, true, new PK_EncryptorFilter(pp::PRNG(), futureEncryptor, new StringSink(cipherFuture) ) );
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string plainFuture;
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StringSource ss4 (cipherFuture, true, new PK_DecryptorFilter(pp::PRNG(), futureDecryptor, new StringSink(plainFuture) ) );
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// decrypt local w/future
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string plainFutureFromLocal;
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StringSource ss5 (cipherLocal, true, new PK_DecryptorFilter(pp::PRNG(), futureDecryptor, new StringSink(plainFutureFromLocal) ) );
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// decrypt future w/local
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string plainLocalFromFuture;
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StringSource ss6 (cipherFuture, true, new PK_DecryptorFilter(pp::PRNG(), localDecryptor, new StringSink(plainLocalFromFuture) ) );
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assert(plainLocal == message);
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assert(plainFuture == plainLocal);
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assert(plainFutureFromLocal == plainLocal);
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assert(plainLocalFromFuture == plainLocal);
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}
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BOOST_AUTO_TEST_CASE(cryptopp_aes128_ctr)
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{
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const int aesKeyLen = 16;
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assert(sizeof(char) == sizeof(byte));
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// generate test key
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AutoSeededRandomPool rng;
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SecByteBlock key(0x00, aesKeyLen);
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rng.GenerateBlock(key, key.size());
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// cryptopp uses IV as nonce/counter which is same as using nonce w/0 ctr
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byte ctr[AES::BLOCKSIZE];
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rng.GenerateBlock(ctr, sizeof(ctr));
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string text = "Now is the time for all good persons to come to the aide of humanity.";
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// c++11 ftw
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unsigned char const* in = (unsigned char*)&text[0];
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unsigned char* out = (unsigned char*)&text[0];
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string original = text;
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string cipherCopy;
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try
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{
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CTR_Mode<AES>::Encryption e;
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e.SetKeyWithIV(key, key.size(), ctr);
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e.ProcessData(out, in, text.size());
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assert(text != original);
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cipherCopy = text;
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}
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catch(CryptoPP::Exception& e)
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{
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cerr << e.what() << endl;
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}
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try
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{
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CTR_Mode< AES >::Decryption d;
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d.SetKeyWithIV(key, key.size(), ctr);
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d.ProcessData(out, in, text.size());
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assert(text == original);
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}
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catch(CryptoPP::Exception& e)
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{
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cerr << e.what() << endl;
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}
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// reencrypt ciphertext...
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try
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{
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assert(cipherCopy != text);
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in = (unsigned char*)&cipherCopy[0];
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out = (unsigned char*)&cipherCopy[0];
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CTR_Mode<AES>::Encryption e;
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e.SetKeyWithIV(key, key.size(), ctr);
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e.ProcessData(out, in, text.size());
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// yep, ctr mode.
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assert(cipherCopy == original);
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}
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catch(CryptoPP::Exception& e)
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{
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cerr << e.what() << endl;
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}
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}
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BOOST_AUTO_TEST_CASE(cryptopp_aes128_cbc)
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{
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const int aesKeyLen = 16;
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assert(sizeof(char) == sizeof(byte));
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AutoSeededRandomPool rng;
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SecByteBlock key(0x00, aesKeyLen);
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rng.GenerateBlock(key, key.size());
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// Generate random IV
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byte iv[AES::BLOCKSIZE];
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rng.GenerateBlock(iv, AES::BLOCKSIZE);
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string string128("AAAAAAAAAAAAAAAA");
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string plainOriginal = string128;
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CryptoPP::CBC_Mode<Rijndael>::Encryption cbcEncryption(key, key.size(), iv);
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cbcEncryption.ProcessData((byte*)&string128[0], (byte*)&string128[0], string128.size());
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assert(string128 != plainOriginal);
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CBC_Mode<Rijndael>::Decryption cbcDecryption(key, key.size(), iv);
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cbcDecryption.ProcessData((byte*)&string128[0], (byte*)&string128[0], string128.size());
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assert(plainOriginal == string128);
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// plaintext whose size isn't divisible by block size must use stream filter for padding
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string string192("AAAAAAAAAAAAAAAABBBBBBBB");
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plainOriginal = string192;
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string cipher;
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StreamTransformationFilter* aesStream = new StreamTransformationFilter(cbcEncryption, new StringSink(cipher));
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StringSource source(string192, true, aesStream);
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assert(cipher.size() == 32);
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cbcDecryption.ProcessData((byte*)&cipher[0], (byte*)&string192[0], cipher.size());
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assert(string192 == plainOriginal);
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}
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BOOST_AUTO_TEST_CASE(eth_keypairs)
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{
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cnote << "Testing Crypto...";
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secp256k1_start();
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KeyPair p(Secret(fromHex("3ecb44df2159c26e0f995712d4f39b6f6e499b40749b1cf1246c37f9516cb6a4")));
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BOOST_REQUIRE(p.pub() == Public(fromHex("97466f2b32bc3bb76d4741ae51cd1d8578b48d3f1e68da206d47321aec267ce78549b514e4453d74ef11b0cd5e4e4c364effddac8b51bcfc8de80682f952896f")));
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BOOST_REQUIRE(p.address() == Address(fromHex("8a40bfaa73256b60764c1bf40675a99083efb075")));
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{
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eth::Transaction t;
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t.nonce = 0;
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t.type = eth::Transaction::MessageCall;
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t.receiveAddress = h160(fromHex("944400f4b88ac9589a0f17ed4671da26bddb668b"));
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t.value = 1000;
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auto rlp = t.rlp(false);
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cnote << RLP(rlp);
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cnote << toHex(rlp);
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cnote << t.sha3(false);
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t.sign(p.secret());
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rlp = t.rlp(true);
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cnote << RLP(rlp);
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cnote << toHex(rlp);
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cnote << t.sha3(true);
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BOOST_REQUIRE(t.sender() == p.address());
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}
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}
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int cryptoTest()
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{
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cnote << "Testing Crypto...";
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secp256k1_start();
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KeyPair p(Secret(fromHex("3ecb44df2159c26e0f995712d4f39b6f6e499b40749b1cf1246c37f9516cb6a4")));
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assert(p.pub() == Public(fromHex("97466f2b32bc3bb76d4741ae51cd1d8578b48d3f1e68da206d47321aec267ce78549b514e4453d74ef11b0cd5e4e4c364effddac8b51bcfc8de80682f952896f")));
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assert(p.address() == Address(fromHex("8a40bfaa73256b60764c1bf40675a99083efb075")));
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{
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eth::Transaction t;
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t.nonce = 0;
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t.type = eth::Transaction::MessageCall;
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t.receiveAddress = h160(fromHex("944400f4b88ac9589a0f17ed4671da26bddb668b"));
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t.value = 1000;
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auto rlp = t.rlp(false);
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cnote << RLP(rlp);
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cnote << toHex(rlp);
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cnote << t.sha3(false);
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t.sign(p.secret());
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rlp = t.rlp(true);
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cnote << RLP(rlp);
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cnote << toHex(rlp);
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cnote << t.sha3(true);
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assert(t.sender() == p.address());
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}
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#if 0
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// Test transaction.
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bytes tx = fromHex("88005401010101010101010101010101010101010101011f0de0b6b3a76400001ce8d4a5100080181c373130a009ba1f10285d4e659568bfcfec85067855c5a3c150100815dad4ef98fd37cf0593828c89db94bd6c64e210a32ef8956eaa81ea9307194996a3b879441f5d");
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cout << "TX: " << RLP(tx) << endl;
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Transaction t2(tx);
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cout << "SENDER: " << hex << t2.sender() << dec << endl;
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secp256k1_start();
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Transaction t;
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t.nonce = 0;
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t.value = 1; // 1 wei.
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t.type = eth::Transaction::MessageCall;
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t.receiveAddress = toAddress(sha3("123"));
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bytes sig64 = toBigEndian(t.vrs.r) + toBigEndian(t.vrs.s);
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cout << "SIG: " << sig64.size() << " " << toHex(sig64) << " " << t.vrs.v << endl;
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auto msg = t.rlp(false);
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cout << "TX w/o SIG: " << RLP(msg) << endl;
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cout << "RLP(TX w/o SIG): " << toHex(t.rlpString(false)) << endl;
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std::string hmsg = sha3(t.rlpString(false), false);
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cout << "SHA256(RLP(TX w/o SIG)): 0x" << toHex(hmsg) << endl;
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bytes privkey = sha3Bytes("123");
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{
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bytes pubkey(65);
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int pubkeylen = 65;
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int ret = secp256k1_ecdsa_seckey_verify(privkey.data());
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cout << "SEC: " << dec << ret << " " << toHex(privkey) << endl;
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ret = secp256k1_ecdsa_pubkey_create(pubkey.data(), &pubkeylen, privkey.data(), 1);
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pubkey.resize(pubkeylen);
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int good = secp256k1_ecdsa_pubkey_verify(pubkey.data(), (int)pubkey.size());
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cout << "PUB: " << dec << ret << " " << pubkeylen << " " << toHex(pubkey) << (good ? " GOOD" : " BAD") << endl;
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}
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// Test roundtrip...
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{
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bytes sig(64);
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u256 nonce = 0;
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int v = 0;
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cout << toHex(hmsg) << endl;
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cout << toHex(privkey) << endl;
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cout << hex << nonce << dec << endl;
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int ret = secp256k1_ecdsa_sign_compact((byte const*)hmsg.data(), (int)hmsg.size(), sig.data(), privkey.data(), (byte const*)&nonce, &v);
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cout << "MYSIG: " << dec << ret << " " << sig.size() << " " << toHex(sig) << " " << v << endl;
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bytes pubkey(65);
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int pubkeylen = 65;
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ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), (int)hmsg.size(), (byte const*)sig.data(), pubkey.data(), &pubkeylen, 0, v);
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pubkey.resize(pubkeylen);
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cout << "MYREC: " << dec << ret << " " << pubkeylen << " " << toHex(pubkey) << endl;
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}
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{
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bytes pubkey(65);
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int pubkeylen = 65;
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int ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), (int)hmsg.size(), (byte const*)sig64.data(), pubkey.data(), &pubkeylen, 0, (int)t.vrs.v - 27);
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pubkey.resize(pubkeylen);
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cout << "RECPUB: " << dec << ret << " " << pubkeylen << " " << toHex(pubkey) << endl;
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cout << "SENDER: " << hex << toAddress(dev::sha3(bytesConstRef(&pubkey).cropped(1))) << dec << endl;
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}
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#endif
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return 0;
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}
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BOOST_AUTO_TEST_SUITE_END()
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