public static X509Certificate GenerateLicense(CertificateAuthority ca, Uri installCode, Boolean isServerKey, UInt32 numLic, Boolean isTemp, DateTime?tempDate)
{
String installKey = null;
Uri license = null;
System.Reflection.Assembly asm = null;
FileInfo p12File = null;
try
{
String[] iParts = installCode.AbsolutePath.Trim("/".ToCharArray()).Split("/".ToCharArray());
IAMVersion version = IAMVersion.v100;
switch (iParts[0].ToLower())
{
case "v1":
case "v100":
version = IAMVersion.v100;
break;
default:
throw new Exception("Install code version unrecognized");
break;
}
installKey = String.Join("/", iParts, 1, iParts.Length - 1);
//Em caso de licença com data de expiração, adiciona 20 horas no tempo para evitar problemas com fuso
tempDate += TimeSpan.FromHours(20);
license = new Uri("license://safeid/" + version.ToString() + "/" + GeraKey(installKey, isServerKey, numLic, isTemp, tempDate, version));
try
{
CertificateAuthority.subjectAltName alt = new CertificateAuthority.subjectAltName();
alt.Uri.Add(installCode);
alt.Uri.Add(license);
String pkcs12Cert = ca.SignCert("SafeID IAM License", false, alt, false, (isTemp && tempDate.HasValue ? tempDate.Value : DateTime.Now + TimeSpan.FromDays(36500)));
return(CATools.GetX509CertFromPKCS12(Convert.FromBase64String(pkcs12Cert), ca.SignedPassword));
}
finally
{
try
{
File.Delete(p12File.FullName);
File.Delete(p12File.FullName.Replace(p12File.Extension, ".cer"));
}
catch { }
p12File = null;
asm = null;
}
}
finally
{
installKey = null;
}
}
private static IAMKeyData CheckKey(String installKey, IAMVersion version, String sKey)
{
IAMKeyData kData = new IAMKeyData();
byte[] key = new byte[0];
kData.InstallKey = "installkey://safeid/" + version.ToString() + "/" + installKey;
key = StringToByteArray(sKey.Replace("-", "").Replace("/", "").Replace("\\", ""));
kData.NumLic = (UInt32)((key[4] << 8) | key[6]);
UInt32 totalSeconds = (UInt32)((key[2] << 24) | (key[12] << 16) | (key[9] << 8) | (key[7]));
kData.IsServerKey = (key[3] == 1);
if (totalSeconds > 0)
{
kData.IsTemp = true;
kData.TempDate = new DateTime(1970, 1, 1, 0, 0, 0).AddSeconds(totalSeconds);
}
else
{
kData.IsTemp = false;
}
String cKey = GeraKey(installKey, kData.IsServerKey, kData.NumLic, kData.IsTemp, kData.TempDate, version);
if (cKey.ToUpper().Replace("-", "").Replace("/", "").Replace("\\", "") != sKey.ToUpper().Replace("-", "").Replace("/", "").Replace("\\", ""))
{
throw new Exception("Invalid key");
}
return(kData);
}
public static IAMKeyData ExtractFromCert(String base64CertData)
{
X509Certificate cert = null;
Uri installCode = null;
Uri license = null;
String key = null;
String installKey = null;
try
{
try
{
cert = CATools.LoadCert(Convert.FromBase64String(base64CertData));
}
catch (Exception ex)
{
throw new Exception("Erro on load certificate: " + ex.Message);
}
installCode = GetDataCode(cert, "installkey");
if (installCode == null)
{
throw new Exception("Install code not found in certificate");
}
license = GetDataCode(cert, "license");
if (license == null)
{
throw new Exception("License not found in certificate");
}
String[] parts = license.AbsolutePath.Trim("/".ToCharArray()).Split("/".ToCharArray());
String[] iParts = installCode.AbsolutePath.Trim("/".ToCharArray()).Split("/".ToCharArray());
IAMVersion version = IAMVersion.v100;
switch (parts[0].ToLower())
{
case "v100":
version = IAMVersion.v100;
break;
default:
throw new Exception("License version unrecognized");
break;
}
key = String.Join("/", parts, 1, parts.Length - 1);
installKey = String.Join("/", iParts, 1, iParts.Length - 1);
return(CheckKey(installKey, version, key));
}
finally
{
cert = null;
installCode = null;
license = null;
key = null;
installKey = null;
}
}
private static string GeraKey(String installKey, Boolean isServerKey, UInt32 numLic, Boolean isTemp, DateTime?tempDate, IAMVersion version)
{
byte[] buffer = new byte[0];
uint totalSeconds = 0;
if (isTemp)
{
DateTime?nullable = tempDate;
DateTime time = new DateTime(0x7b2, 1, 1, 0, 0, 0);
TimeSpan?nullable3 = nullable.HasValue ? new TimeSpan?(nullable.GetValueOrDefault() - time) : null;
totalSeconds = (uint)nullable3.Value.TotalSeconds;
//totalSeconds += 0x1517f;
}
using (MemoryStream stream = new MemoryStream())
{
if (version == IAMVersion.v100)
{
stream.Write(secret1_v100, 0, secret1_v100.Length);
}
byte[] bytes = Encoding.ASCII.GetBytes(installKey.ToLower().Replace("-", "").Replace("/", "").Replace("\\", ""));
stream.Write(bytes, 0, bytes.Length);
ushort num2 = (ushort)(numLic ^ 0x33bb);
bytes = BitConverter.GetBytes(num2);
stream.Write(bytes, 0, bytes.Length);
uint num3 = 0;
num3 = totalSeconds ^ 0xffbb0033;
bytes = BitConverter.GetBytes(num3);
stream.Write(bytes, 0, bytes.Length);
if (version == IAMVersion.v100)
{
stream.Write(secret2_v100, 0, secret2_v100.Length);
}
num2 = (ushort)(numLic ^ 0xbb33);
bytes = BitConverter.GetBytes(num2);
stream.Write(bytes, 0, bytes.Length);
num3 = totalSeconds ^ 0x33ffbb;
bytes = BitConverter.GetBytes(num3);
stream.Write(bytes, 0, bytes.Length);
bytes = Encoding.ASCII.GetBytes(installKey.Replace("-", "").Replace("/", "").Replace("\\", ""));
stream.Write(bytes, 0, bytes.Length);
if (version == IAMVersion.v100)
{
stream.Write(secret3_v100, 0, secret3_v100.Length);
}
stream.Flush();
buffer = stream.ToArray();
}
byte[] buffer3 = new SHA1CryptoServiceProvider().ComputeHash(buffer);
buffer3[3] = ToByte((uint)((isServerKey ? 1 : 0) & 0xff));
buffer3[4] = ToByte((numLic >> 8) & 0xff);
buffer3[6] = ToByte(numLic & 0xff);
buffer3[2] = ToByte((totalSeconds >> 0x18) & 0xff);
buffer3[12] = ToByte((totalSeconds >> 0x10) & 0xff);
buffer3[9] = ToByte((totalSeconds >> 8) & 0xff);
buffer3[7] = ToByte(totalSeconds & 0xff);
String key = BitConverter.ToString(buffer3).Replace("-", "");
string str5 = "";
for (int j = 0; j < key.Length; j++)
{
if ((j > 0) && ((j % 8) == 0))
{
str5 = str5 + '/';
}
str5 = str5 + key[j];
}
key = str5;
return(key);
}
