public bool ECDHTest_Signature(string svcProvider)
{
try
{
using (ECDsaCryptoServiceProvider csp = new ECDsaCryptoServiceProvider(svcProvider))
{
byte[] dataToSign = System.Text.UTF8Encoding.UTF8.GetBytes("This is a string to sign");
byte[] sig = csp.SignData(dataToSign);
return csp.VerifyData(dataToSign, sig);
}
}
catch
{
return false;
}
}
private static bool TestSignDataStream(Session session)
{
bool passed = true;
byte[] data = new byte[10000];
for (int i = 0; i < data.Length; i++)
data[i] = (byte)(i % 256);
MechanismType[] hashAlgorithms = new MechanismType[]
{
//MechanismType.MD5, currently not supported in OpenSSL for DSA
MechanismType.SHA_1,
MechanismType.SHA256,
MechanismType.SHA384,
MechanismType.SHA512
};
int[] keySizes = new int[] { 256, 384, 521 };
foreach (int keySize in keySizes)
{
WriteLine("Using key size " + keySize);
foreach (MechanismType hashAlgorithm in hashAlgorithms)
{
WriteLine("Using hash algorithm " + hashAlgorithm.ToString());
using (ECDsaCryptoServiceProvider sign = new ECDsaCryptoServiceProvider(session))
{
sign.KeySize = keySize;
using (ECDsaCryptoServiceProvider verify1 = new ECDsaCryptoServiceProvider(sign.KeyPair))
using (ECDsaCryptoServiceProvider verify2 = new ECDsaCryptoServiceProvider(sign.KeyPair))
//using (MemoryStream ms = new MemoryStream(data))
{
sign.HashAlgorithm = hashAlgorithm;
verify1.HashAlgorithm = hashAlgorithm;
verify2.HashAlgorithm = hashAlgorithm;
byte[] signature = sign.SignData(data); //ms);
//ms.Position = 0;
bool verified = verify1.VerifyData(data, signature);
if (!verified)
WriteLine("Did not verify via stream");
passed &= verified;
verified = verify2.VerifyData(data, signature);
if (!verified)
WriteLine("Did not verify via array");
passed &= verified;
}
}
}
}
return passed;
}
private static bool TestSignDataBuffer(Session session)
{
bool passed = true;
byte[] data = new byte[10000];
for (int i = 0; i < data.Length; i++)
data[i] = (byte)(i % 256);
MechanismType[] hashAlgorithms = new MechanismType[]
{
// MechanismType.MD5, - currently not supported in OpenSSL for ECDSA
MechanismType.SHA_1,
MechanismType.SHA256,
MechanismType.SHA384,
MechanismType.SHA512,
};
int[] keySizes = new int[] { 256, 384, 521 };
foreach (int keySize in keySizes)
{
WriteLine("Using key size " + keySize);
foreach (MechanismType hashAlgorithm in hashAlgorithms)
{
WriteLine("Using hash algorithm " + hashAlgorithm.ToString());
using (ECDsaCryptoServiceProvider sign = new ECDsaCryptoServiceProvider(session, keySize))
using (ECDsaCryptoServiceProvider verify = new ECDsaCryptoServiceProvider(sign.KeyPair))
{
sign.HashAlgorithm = hashAlgorithm;
verify.HashAlgorithm = hashAlgorithm;
try
{
byte[] signature = sign.SignData(data);
bool verified = verify.VerifyData(data, signature);
if (!verified)
WriteLine("Did not verify");
passed &= verified;
}
catch
{
passed = false;
}
}
}
}
return passed;
}