public static bool VerifySignature(byte[] message, byte[] signature, byte[] pubkey)
{
var PublicKey = ThinNeo.Cryptography.ECC.ECPoint.DecodePoint(pubkey, ThinNeo.Cryptography.ECC.ECCurve.Secp256r1);
var usepk = PublicKey.EncodePoint(false).Skip(1).ToArray();
byte[] first = { 0x45, 0x43, 0x53, 0x31, 0x20, 0x00, 0x00, 0x00 };
usepk = first.Concat(usepk).ToArray();
using (System.Security.Cryptography.CngKey key = System.Security.Cryptography.CngKey.Import(usepk, System.Security.Cryptography.CngKeyBlobFormat.EccPublicBlob))
using (System.Security.Cryptography.ECDsaCng ecdsa = new System.Security.Cryptography.ECDsaCng(key))
//using (var ecdsa = System.Security.Cryptography.ECDsa.Create(new System.Security.Cryptography.ECParameters
//{
// Curve = System.Security.Cryptography.ECCurve.NamedCurves.nistP256,
// Q = new System.Security.Cryptography.ECPoint
// {
// X = usepk.Take(32).ToArray(),
// Y = usepk.Skip(32).ToArray()
// }
//}))
{
var hash = sha256.ComputeHash(message);
return(ecdsa.VerifyHash(hash, signature));
}
}
public static byte[] Sign(byte[] message, byte[] prikey)
{
var Secp256r1_G = NEO.AllianceOfThinWallet.Cryptography.Helper.HexString2Bytes("04" + "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296" + "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5");
var PublicKey = ECC.ECCurve.Secp256r1.G * prikey;
var pubkey = PublicKey.EncodePoint(false).Skip(1).ToArray();
//#if NET461
const int ECDSA_PRIVATE_P256_MAGIC = 0x32534345;
prikey = BitConverter.GetBytes(ECDSA_PRIVATE_P256_MAGIC).Concat(BitConverter.GetBytes(32)).Concat(pubkey).Concat(prikey).ToArray();
using (System.Security.Cryptography.CngKey key = System.Security.Cryptography.CngKey.Import(prikey, System.Security.Cryptography.CngKeyBlobFormat.EccPrivateBlob))
using (System.Security.Cryptography.ECDsaCng ecdsa = new System.Security.Cryptography.ECDsaCng(key))
//#else
// using (var ecdsa = System.Security.Cryptography.ECDsa.Create(new System.Security.Cryptography.ECParameters
// {
// Curve = System.Security.Cryptography.ECCurve.NamedCurves.nistP256,
// D = prikey,
// Q = new System.Security.Cryptography.ECPoint
// {
// X = pubkey.Take(32).ToArray(),
// Y = pubkey.Skip(32).ToArray()
// }
// }))
//#endif
{
return(ecdsa.SignData(message, System.Security.Cryptography.HashAlgorithmName.SHA256));
}
}
public static byte[] Sign(byte[] message, byte[] prikey)
{
var Secp256r1_G = Helper.HexString2Bytes("04" + "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296" + "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5");
var PublicKey = ThinNeo.Cryptography.ECC.ECCurve.Secp256r1.G * prikey;
var pubkey = PublicKey.EncodePoint(false).Skip(1).ToArray();
//#if NET461
//const int ECDSA_PRIVATE_P256_MAGIC = 0x32534345;
byte[] first = { 0x45, 0x43, 0x53, 0x32, 0x20, 0x00, 0x00, 0x00 };
prikey = first.Concat(pubkey).Concat(prikey).ToArray();
using (System.Security.Cryptography.CngKey key = System.Security.Cryptography.CngKey.Import(prikey, System.Security.Cryptography.CngKeyBlobFormat.EccPrivateBlob))
using (System.Security.Cryptography.ECDsaCng ecdsa = new System.Security.Cryptography.ECDsaCng(key))
//using (var ecdsa = System.Security.Cryptography.ECDsa.Create(new System.Security.Cryptography.ECParameters
//{
// Curve = System.Security.Cryptography.ECCurve.NamedCurves.nistP256,
// D = prikey,
// Q = new System.Security.Cryptography.ECPoint
// {
// X = pubkey.Take(32).ToArray(),
// Y = pubkey.Skip(32).ToArray()
// }
//}))
{
var hash = sha256.ComputeHash(message);
return(ecdsa.SignHash(hash));
}
}
public RSACng(System.Security.Cryptography.CngKey key)
{
}
public ECDsaCng(System.Security.Cryptography.CngKey key)
{
}
public Microsoft.Win32.SafeHandles.SafeNCryptSecretHandle DeriveSecretAgreementHandle(System.Security.Cryptography.CngKey otherPartyPublicKey)
{
throw null;
}
public byte[] DeriveKeyMaterial(System.Security.Cryptography.CngKey otherPartyPublicKey)
{
throw null;
}
public ECDiffieHellmanCng(System.Security.Cryptography.CngKey key)
{
}
static void Main(string[] args)
{
//neo 私钥
string neoprivate = "f97b7434ffa981eb809ea6795e0cb3046850a65be2f9f67b92053f6f2838adca";
Console.WriteLine("Neo 私钥=" + neoprivate);
Console.WriteLine(" Neo私钥是预先生成的");
//neo公钥
byte[] prikey = HexString2Bytes(neoprivate);
var PublicKey = NEO.AllianceOfThinWallet.Cryptography.ECC.ECCurve.Secp256r1.G * prikey;
byte[] pubkey = PublicKey.EncodePoint(false).Skip(1).ToArray();
Console.WriteLine("Neo 公钥=" + Bytes2HexString(pubkey));
Console.WriteLine(" Neo公钥是用Neo私钥计算出来的");
//签名的私钥
byte[] first = { 0x45, 0x43, 0x53, 0x32, 0x20, 0x00, 0x00, 0x00 };
byte[] signprikey = first.Concat(pubkey).Concat(prikey).ToArray();
Console.WriteLine("签名算法用的私钥=" + Bytes2HexString(signprikey));
Console.WriteLine(" 签名算法用的私钥 是 用 neo 私钥 和 heo公钥 组合出来的");
Console.WriteLine("");
//随机数据
Random r = new Random();
byte[] srcdata = new byte[65536];
for (var i = 0; i < srcdata.Length; i++)
{
srcdata[i] = (byte)(r.Next() % 256);
}
Console.WriteLine("填充64k数据用于签名");
//签名
byte[] signdata = null;
using (System.Security.Cryptography.CngKey key = System.Security.Cryptography.CngKey.Import(signprikey, System.Security.Cryptography.CngKeyBlobFormat.EccPrivateBlob))
{
using (System.Security.Cryptography.ECDsaCng ecdsa = new System.Security.Cryptography.ECDsaCng(key))
{
var hashsrc = sha256.ComputeHash(srcdata);
signdata = ecdsa.SignHash(hashsrc);
}
}
Console.WriteLine("签名结果:" + Bytes2HexString(signdata));
Console.WriteLine("");
byte[] first2 = { 0x45, 0x43, 0x53, 0x31, 0x20, 0x00, 0x00, 0x00 };
byte[] signpubkey = first2.Concat(pubkey).ToArray();
Console.WriteLine("验证签名公钥=" + Bytes2HexString(signpubkey));
Console.WriteLine(" 验证签名公钥是用NEO公钥计算出来的");
using (System.Security.Cryptography.CngKey key = System.Security.Cryptography.CngKey.Import(signpubkey, System.Security.Cryptography.CngKeyBlobFormat.EccPublicBlob))
{
using (System.Security.Cryptography.ECDsaCng ecdsa = new System.Security.Cryptography.ECDsaCng(key))
{
Console.WriteLine("验证签名结果=" + ecdsa.VerifyData(srcdata, signdata));
var hashsrc = sha256.ComputeHash(srcdata);
Console.WriteLine("验证签名结果2=" + ecdsa.VerifyHash(hashsrc, signdata));
}
}
Console.WriteLine("回车继续");
Console.ReadLine();
}
public static void GenerateEcdsaKey()
{
byte[] myhash = null;
using (System.Security.Cryptography.SHA256 sha = System.Security.Cryptography.SHA256.Create())
{
myhash = sha.ComputeHash(System.Text.Encoding.UTF8.GetBytes("Hello world"));
} // End Using sha
// Assembly: System.Core
System.Security.Cryptography.CngKeyCreationParameters keyCreationParameters = new System.Security.Cryptography.CngKeyCreationParameters();
// keyCreationParameters.ExportPolicy = System.Security.Cryptography.CngExportPolicies.AllowExport;
keyCreationParameters.ExportPolicy = System.Security.Cryptography.CngExportPolicies.AllowPlaintextExport;
keyCreationParameters.KeyUsage = System.Security.Cryptography.CngKeyUsages.Signing;
System.Security.Cryptography.CngKey key =
System.Security.Cryptography.CngKey.Create(
System.Security.Cryptography.CngAlgorithm.ECDsaP256, null, keyCreationParameters
);
byte[] publicKeyBytes = null;
byte[] privateKeyBytes = null;
using (System.Security.Cryptography.ECDsaCng dsa = new System.Security.Cryptography.ECDsaCng(key))
{
publicKeyBytes = dsa.Key.Export(System.Security.Cryptography.CngKeyBlobFormat.EccPublicBlob);
privateKeyBytes = dsa.Key.Export(System.Security.Cryptography.CngKeyBlobFormat.EccPrivateBlob);
// http://stackoverflow.com/questions/34618755/verify-bouncycastle-ecdsa-signature-with-net-libraries-ecdsacng
// string xmlExport = dsa.ToXmlString(true); // Include PK in export: not implemented exception...
string xmlExport = dsa.ToXmlString(System.Security.Cryptography.ECKeyXmlFormat.Rfc4050);
System.Console.WriteLine(xmlExport);
} // End Using dsa
byte[] mysignature = null;
System.Security.Cryptography.CngKey privateKey = System.Security.Cryptography.CngKey.Import(privateKeyBytes, System.Security.Cryptography.CngKeyBlobFormat.EccPrivateBlob);
using (System.Security.Cryptography.ECDsaCng dsa2 = new System.Security.Cryptography.ECDsaCng(privateKey))
{
// http://stackoverflow.com/questions/34618755/verify-bouncycastle-ecdsa-signature-with-net-libraries-ecdsacng
// dsa2.FromXmlString("");
// dsa.HashAlgorithm = CngAlgorithm.Sha256;
//byte[] signature = dsa.SignData
mysignature = dsa2.SignHash(myhash); // Requires private key
bool b = dsa2.VerifyHash(myhash, mysignature); // Verifying can be done with publicKey or privateKey, signing only with privateKey
System.Console.WriteLine(b);
} // End Using dsa2
System.Security.Cryptography.CngKey publicKey = System.Security.Cryptography.CngKey.Import(publicKeyBytes, System.Security.Cryptography.CngKeyBlobFormat.EccPublicBlob);
using (System.Security.Cryptography.ECDsaCng dsa3 = new System.Security.Cryptography.ECDsaCng(publicKey))
{
bool b = dsa3.VerifyHash(myhash, mysignature); // Verifying can be done with publicKey or privateKey, signing only with privateKey
System.Console.WriteLine(b);
} // End Using dsa3
}
