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