private static byte[] CreateSignature(byte[] data, CngKey key)
{
ECDsaCng signingAlgo = new ECDsaCng(key);
byte[] signature = signingAlgo.SignData(data);
signingAlgo.Clear();
return(signature);
}
static byte[] CreateSignature(byte[] data, CngKey key)
{
byte[] signature;
var signingAlg = new ECDsaCng(key);
signature = signingAlg.SignData(data);
signingAlg.Clear();
return(signature);
}
public byte[] CreateSignature(byte[] data, CngKey key)
{
byte[] signature;
using (var signingAlg = new ECDsaCng(key))
{
signature = signingAlg.SignData(data, HashAlgorithmName.SHA512);
signingAlg.Clear();
}
return(signature);
}
public static byte[] CreateSignature(byte[] data, CngKey key)
{
// 创建签名
byte[] signature;
using (var signingAlg = new ECDsaCng(key))
{
signature = signingAlg.SignData(data);
signingAlg.Clear();
}
return(signature);
}
private void удалениеПарыКлючейToolStripMenuItem_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Будет удалена пара ключей авторизованного пользователя.\nБудет произведена деавторизация.\nТекстовое поле будет очищено. Продолжить?", "Предупреждение", MessageBoxButtons.OKCancel) == DialogResult.OK)
{
Visible = false;
DeleteDirectory(PK_store_path + "\\" + current_user);
ecdsaCng.Key.Delete();
ecdsaCng.Clear();
Auth();
Visible = true;
}
}
static bool VerifySignature(byte[] data, byte[] signature, byte[] pubKey)
{
bool retValue = false;
using (CngKey key = CngKey.Import(pubKey, CngKeyBlobFormat.GenericPublicBlob))
using (var signingAlg = new ECDsaCng(key))
{
retValue = signingAlg.VerifyData(data, signature);
signingAlg.Clear();
}
return(retValue);
}
/// <summary>
/// 使用私钥签名
/// </summary>
public static byte[] SignData(byte[] data, string keyName)
{
// 打开密钥
CngKey cngKey = CngKey.Open(keyName);
// 签名
ECDsaCng ecdsa = new ECDsaCng(cngKey);
byte[] signature = ecdsa.SignData(data);
ecdsa.Clear();
cngKey.Dispose();
return(signature);
}
private bool VerifySignaure(CngKey key, byte[] data, byte[] signature, byte[] pubkey)
{
bool retValue = false;
using (ECDsaCng signingAlg = new ECDsaCng(key))
{
retValue = signingAlg.VerifyData(data, signature);
signingAlg.Clear();
}
return(retValue);
}
//创建签名
private static byte[] CreateSignature(byte[] data, CngKey key)
{
byte[] signature;
//key是CngKey类型，包含了公钥和私钥
//将key传入ECDsaCng得到加密算法
using (var signingAlg = new ECDsaCng(key))
{
//使用 signingAlg.SignData 对 要签名的内容以及私钥进行签名
signature = signingAlg.SignData(data, HashAlgorithmName.SHA512);
signingAlg.Clear();
}
return(signature);
}
/// <summary>
/// 使用公钥验证签名
/// </summary>
public static bool VerifyData(byte[] data, byte[] signature, byte[] publicKey)
{
bool verified = false;
// 导入公钥
CngKey cngKey = CngKey.Import(publicKey, CngKeyBlobFormat.EccPublicBlob);
// 验证签名
ECDsaCng ecdsa = new ECDsaCng(cngKey);
verified = ecdsa.VerifyData(data, signature);
ecdsa.Clear();
cngKey.Dispose();
return(verified);
}
private byte[] CreateSignature(byte[] data, CngKey key)
{
/*Имея в распоряжении пару ключей, отправитель может создать подпись с помощью класса ECDsaCng.
* Конструктор этого класса принимает объект CngKey, в котором содержится открытый и секретный ключи.
* Далее этот секретный ключ используется для подписания данных вызовом метода SignData()
*/
byte[] signature;
var signingAlg = new ECDsaCng(key);
signature = signingAlg.SignData(data);
signingAlg.Clear();
return(signature);
}
private byte[] CreateSignature(byte[] data, CngKey key)
{
byte[] signature;
using (var signingAlg = new ECDsaCng(key))
{
#if NET46
signature = signingAlg.SignData(data);
signingAlg.Clear();
#else
signature = signingAlg.SignData(data, HashAlgorithmName.SHA512);
#endif
}
return(signature);
}
/// <summary>
/// 有了密钥对，Alice就可以使用ECDsaCng类创建签名了。
/// 这个类的构造函数从Alice那里接收包含公钥和私钥的CngKey类。
/// 再使用私钥，通过SignData0方法给数据签名。SignData()方法在.NET core中略有不同。.NETcore需要如下算法
/// </summary>
/// <param name="aliceData"></param>
/// <param name="_aliceKeySignature"></param>
/// <returns></returns>
private static byte[] CreateSignature(byte[] aliceData, CngKey _aliceKeySignature)
{
byte[] signature;
using (var signingAlg = new ECDsaCng(_aliceKeySignature))
{
#if NET46
signature = signingAlg.SignData(aliceData);
signingAlg.Clear();
#else
signature = signingAlg.SignData(aliceData, HashAlgorithmName.SHA512);
#endif
}
return(signature);
}
public bool VerifySignature(byte[] data, byte[] signature, byte[] pubKeys)
{
bool retValue = false;
using (CngKey key = CngKey.Import(pubKeys, CngKeyBlobFormat.GenericPrivateBlob))
{
using (var signungAlg = new ECDsaCng(key))
{
retValue = signungAlg.VerifyData(data, signature, HashAlgorithmName.SHA512);
signungAlg.Clear();
}
return(retValue);
}
}
//验证签名
private static bool VerifySignature(byte[] data, byte[] signature, byte[] pubKey)
{
bool retValue = false;
//使用 CngKey.Import 导入CngKey对象，的到公钥
using (CngKey key = CngKey.Import(pubKey, CngKeyBlobFormat.GenericPublicBlob))
//将公钥传入ECDsaCng得到解密签名算法
using (var signinAlg = new ECDsaCng(key))
{
//然后使用signinAlg.VerifyData来验证签名
retValue = signinAlg.VerifyData(data, signature, HashAlgorithmName.SHA512);
signinAlg.Clear();
}
return(retValue);
}
public bool VerifySignature(string password, byte[] signature, byte[] salt)
{
bool retValue = false;
using (CngKey key = CngKey.Import(salt, CngKeyBlobFormat.GenericPublicBlob))
using (var signingAlg = new ECDsaCng(key))
{
//#if NET46
retValue = signingAlg.VerifyData(Encoding.UTF8.GetBytes(password), signature);
signingAlg.Clear();
//#else
// retValue = signingAlg.VerifyData(data, signature, HashAlgorithmName.SHA512);
//#endif
}
return(retValue);
}
/// <summary>
/// 要验证签名是否真的来自于Alice，Bob使用Alice的公钥检查签名。包含公钥blob的字节数组可以用静态方法Import()导入CngKey对象。
/// 然后使用ECDsaCng类，调用VerifyData()方法来验证签名。
/// </summary>
/// <param name="aliceData"></param>
/// <param name="aliceSignature"></param>
/// <param name="_alicePublicKeyBob"></param>
/// <returns></returns>
private static bool VerifySignature(byte[] data, byte[] signature, byte[] pubKey)
{
bool retValue = false;
using (CngKey key = CngKey.Import(pubKey, CngKeyBlobFormat.GenericPublicBlob))
using (var signingAlg = new ECDsaCng(key))
{
#if NET46
retValue = signingAlg.VerifyData(data, signature);
signingAlg.Clear();
#else
retValue = signingAlg.VerifyData(data, signature, HashAlgorithmName.SHA512);
#endif
}
return(retValue);
}
/// <summary>
/// 创建签名
/// </summary>
/// <param name="data"></param>
/// <param name="key"></param>
/// <returns></returns>
private byte[] CreateSignature(byte[] data, CngKey key)
{
byte[] signature;
//使用ECDsaCng创建签名,ECDsaCng的构造函数接收包含公钥和私钥的CngKey类对象
using (ECDsaCng signingAlg = new ECDsaCng(key))
{
#if NET46
signature = signingAlg.SignData(data);
signingAlg.Clear();
#else
//对数据进行签名（加密）
signature = signingAlg.SignData(data, HashAlgorithmName.SHA512);
#endif
}
return(signature);
}
private bool VerifySignature(byte[] data, byte[] signature, byte[] pubKey)
{
/*Для проверки, действительно ли подпись принадлежит отправителю, получатель извлекает ее с применением полученного
* от отправителя открытого ключа. Для этого сначала массив байтов, содержащий этот открытый ключ, импортируется
* в объект CngKey с помощью статического метода Import(), а затем для верификации подписи вызывается метод VerifyData()
* класса ECDsaCng
*/
bool retValue = false;
using (CngKey key = CngKey.Import(pubKey, CngKeyBlobFormat.GenericPublicBlob))
{
var signingAlg = new ECDsaCng(key);
retValue = signingAlg.VerifyData(data, signature);
signingAlg.Clear();
}
return(retValue);
}
static byte[] CreateSignature(byte[] data, CngKey key)
{
byte[] signature;
//这里直接用 CngKey 加密
//using(var signingAlg = new ECDsaCng(key))
//{
// signature = signingAlg.SignData(data);
// signingAlg.Clear();
//}
//这里用私钥重新生成CngKey对象
using (CngKey pKey = CngKey.Import(aliceSecKeyBlob, CngKeyBlobFormat.GenericPrivateBlob))
{
using (var signingAlg = new ECDsaCng(pKey))
{
signature = signingAlg.SignData(data);
signingAlg.Clear();
}
}
return(signature);
}
public void UseEncrpyting()
{
// Init key
CngKey key = CngKey.Create(CngAlgorithm.ECDsaP521);
byte[] pubKeyBlob = key.Export(CngKeyBlobFormat.GenericPublicBlob);
byte[] myData = Encoding.UTF8.GetBytes("Hello there");
using (var signingAlgorithm = new ECDsaCng(key))
{
byte[] signature = signingAlgorithm.SignData(myData, HashAlgorithmName.SHA512);
Console.WriteLine(Encoding.UTF8.GetString(signature));
using (CngKey k = CngKey.Import(pubKeyBlob, CngKeyBlobFormat.GenericPublicBlob))
{
bool ret = signingAlgorithm.VerifyData(myData, signature, HashAlgorithmName.SHA512);
Console.WriteLine($"Encoding success={ret}");
}
signingAlgorithm.Clear();
}
}
