public static System.Security.Cryptography.CngKey Create(System.Security.Cryptography.CngAlgorithm algorithm, string keyName, System.Security.Cryptography.CngKeyCreationParameters creationParameters)
{
return(default(System.Security.Cryptography.CngKey));
}
public static System.Security.Cryptography.CngKey Create(System.Security.Cryptography.CngAlgorithm algorithm, string keyName, System.Security.Cryptography.CngKeyCreationParameters creationParameters)
{
throw null;
}
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
}