public static bool Verify(string text, byte[] signature)
{
try
{
byte[] hash = CPCNUtils.Hash(text);
bool isValid = rsaPKCS1SignatureDeformatter.VerifySignature(hash, signature);
if (isValid)
{
return(true);
}
else
{
return(false);
}
}
catch (CryptographicException e)
{
throw e;
}
catch (SystemException e)
{
throw e;
}
}
public static string Sign(string data)
{
try
{
byte[] hash = CPCNUtils.Hash(data);
byte[] signature = rsaPKCS1SignatureFormatter.CreateSignature(hash);
string sig = CPCNUtils.ConvertBytesToHexString(signature);
return(sig);
}
catch (CryptographicException e)
{
throw e;
}
catch (SystemException e)
{
throw e;
}
}
public static bool Verify(string text, string signature)
{
return(Verify(text, CPCNUtils.hex2bytes(signature)));
}
