crypto prototyping.

2 files changed, 50 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e383ba2d..2bafaea3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,4 +8,6 @@ link_directories(../../secp256k1)
 
 add_executable(testeth ${SRC_LIST})
 
+target_link_libraries(testeth secp256k1)
 target_link_libraries(testeth ethereum)
+target_link_libraries(testeth gmp)
diff --git a/main.cpp b/main.cpp
index e78f3ce0..00681436 100644
--- a/main.cpp
+++ b/main.cpp
@@ -20,7 +20,55 @@ std::string randomWord()
 
 int main()
 {
+	secp256k1_start();
 
+	bytes pubkey(65);
+	int pubkeylen = 65;
+	{
+		cout << "SEC: " << asHex(sha256("123", false)) << endl;
+		int ret = secp256k1_ecdsa_pubkey_create(pubkey.data(), &pubkeylen, (byte const*)sha256("123", false).data(), 1);
+		pubkey.resize(pubkeylen);
+		cout << "PUB: " << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
+	}
+
+	bytes tx = fromUserHex("88005401010101010101010101010101010101010101011f0de0b6b3a76400001ce8d4a5100080181c373130a009ba1f10285d4e659568bfcfec85067855c5a3c150100815dad4ef98fd37cf0593828c89db94bd6c64e210a32ef8956eaa81ea9307194996a3b879441f5d");
+	cout << "TX: " << RLP(tx) << endl;
+
+	Transaction t(tx);
+	std::string sig64 = toBigEndianString(t.vrs.r) + toBigEndianString(t.vrs.s);
+	cout << "SIG: " << sig64.size() << " " << asHex(sig64) << " " << t.vrs.v << endl;
+
+	auto msg = t.rlp(false);
+	cout << "TX w/o SIG: " << RLP(msg) << endl;
+	cout << "RLP(TX w/o SIG): " << asHex(t.rlpString(false)) << endl;
+	std::string hmsg = sha256(t.rlpString(false), false);
+	cout << "SHA256(RLP(TX w/o SIG)): 0x" << asHex(hmsg) << endl;
+
+	{
+		bytes sig(64);
+		u256 nonce = 0;
+		int v = 0;
+		int ret = secp256k1_ecdsa_sign_compact((byte const*)hmsg.data(), hmsg.size(), sig.data(), (byte const*)sha256("123", false).data(), (byte const*)&nonce, &v);
+		cout << "MYSIG: " << dec << ret << " " << sig.size() << " " << asHex(sig) << " " << v << endl;
+
+		ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig.data(), pubkey.data(), &pubkeylen, 1, (int)t.vrs.v);
+		pubkey.resize(pubkeylen);
+		cout << "MYREC: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
+	}
+
+	{
+		pubkey.resize(65);
+		int ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig64.data(), pubkey.data(), &pubkeylen, 1, (int)t.vrs.v);
+		pubkey.resize(pubkeylen);
+		cout << "REC: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
+		cout << hex << sha256(pubkey) << endl;
+
+		pubkey.resize(65);
+		ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig64.data(), pubkey.data(), &pubkeylen, 0, (int)t.vrs.v);
+		pubkey.resize(pubkeylen);
+		cout << "REC+: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
+		cout << hex << sha256(pubkey) << endl;
+	}
 
 	{
 		Trie t;