public void SaveWithSignature(string fileName, string keyFileName)
{
EZRSA rsa = new EZRSA(1024);
//rsa.MapHashAlgorithmOID(
if (File.Exists(keyFileName))
{
StreamReader sr = File.OpenText(keyFileName);
string str = sr.ReadToEnd();
rsa.FromXmlString(str);
sr.Close();
XmlDocument doc = SaveWithSignature(rsa);
doc.Save(fileName);
}
// TODO: exception
/*else
* {
* int poo;
* }*/
}
public XmlDocument SaveWithSignature(string keyFileName)
{
// CspParameters cspParams = new CspParameters();
// cspParams.Flags = CspProviderFlags.UseExistingKey;
// RSA rsa = new RSACryptoServiceProvider(cspParams);
EZRSA rsa = new EZRSA(1024);
rsa.FromXmlString(File.ReadAllText(keyFileName));
return(SaveWithSignature(rsa));
}
private static XmlDocument LoadLicenseXmlFromString(string encoded)
{
try
{
byte[] ar = Convert.FromBase64String(encoded);
unchecked
{
for (int i = 0; i < ar.Length; i++)
{
ar[i] = (byte)(ar[i] ^ XOR_VALS[i % XOR_VALS.Length]);
}
}
var mscmp = new MemoryStream(ar);
using (var br = new BinaryReader(mscmp))
{
int siglen = br.ReadInt32();
if (siglen <= 0 || siglen > 100000)
{
return(null);
}
byte[] signature = br.ReadBytes(siglen);
int datalen = br.ReadInt32();
if (datalen <= 0 || datalen > 100000)
{
return(null);
}
byte[] data = br.ReadBytes(datalen);
// check signature
var key = new EZRSA(1024);
key.FromXmlString(Framework.Instance.GetPublicKey());
if (!key.VerifyData(data, new SHA1CryptoServiceProvider(), signature))
{
return(null);
}
var ms = new MemoryStream(data);
var doc = new XmlDocument();
doc.Load(ms);
return(doc);
}
}
catch
{
return(null);
}
}
private static byte[] CreateLicenseBytes(string name, string email, string productattr, string productval, string licid, LicenseData licdata)
{
var doc = CreateNotSignedLicenseDoc(name, email, productattr, productval, licid);
var ms = new MemoryStream();
using (var xw = XmlWriter.Create(ms))
{
doc.Save(xw);
}
if (licdata != null)
{
var sw = new StringWriter();
doc.Save(sw);
licdata.LicenseXml = sw.ToString();
}
byte[] data = ms.ToArray();
// sign binary representation of license
var key = new EZRSA(1024);
key.FromXmlString(Resources.privatekey);
byte[] signature = key.SignData(data, new SHA1CryptoServiceProvider());
var mscmp = new MemoryStream();
using (var bw = new BinaryWriter(mscmp))
{
bw.Write((int)signature.Length);
bw.Write(signature);
bw.Write((int)data.Length);
bw.Write(data);
}
byte[] ar = mscmp.ToArray();
unchecked
{
for (int i = 0; i < ar.Length; i++)
{
ar[i] = (byte)(ar[i] ^ XOR_VALS[i % XOR_VALS.Length]);
}
}
return(ar);
}
