1 files changed, 75 insertions, 0 deletions
diff --git a/Emby.Server.Core/Cryptography/PfxGenerator.cs b/Emby.Server.Core/Cryptography/PfxGenerator.cs
new file mode 100644
index 000000000..2d1dd649e
--- /dev/null
+++ b/Emby.Server.Core/Cryptography/PfxGenerator.cs
@@ -0,0 +1,75 @@
+using System;
+using System.Collections;
+using System.Security.Cryptography;
+
+namespace Emby.Server.Core.Cryptography
+{
+    public class PFXGenerator
+    {
+        // http://www.freekpaans.nl/2015/04/creating-self-signed-x-509-certificates-using-mono-security/
+        public static byte[] GeneratePfx(string certificateName, string password)
+        {
+            byte[] sn = GenerateSerialNumber();
+            string subject = string.Format("CN={0}", certificateName);
+
+            DateTime notBefore = DateTime.Now;
+            DateTime notAfter = DateTime.Now.AddYears(20);
+
+            RSA subjectKey = new RSACryptoServiceProvider(2048);
+
+
+            string hashName = "SHA256";
+
+            X509CertificateBuilder cb = new X509CertificateBuilder(3);
+            cb.SerialNumber = sn;
+            cb.IssuerName = subject;
+            cb.NotBefore = notBefore;
+            cb.NotAfter = notAfter;
+            cb.SubjectName = subject;
+            cb.SubjectPublicKey = subjectKey;
+            cb.Hash = hashName;
+
+            byte[] rawcert = cb.Sign(subjectKey);
+
+
+            PKCS12 p12 = new PKCS12();
+            p12.Password = password;
+
+            Hashtable attributes = GetAttributes();
+
+            p12.AddCertificate(new X509Certificate(rawcert), attributes);
+            p12.AddPkcs8ShroudedKeyBag(subjectKey, attributes);
+
+            return p12.GetBytes();
+        }
+
+        private static Hashtable GetAttributes()
+        {
+            ArrayList list = new ArrayList();
+            // we use a fixed array to avoid endianess issues 
+            // (in case some tools requires the ID to be 1).
+            list.Add(new byte[4] { 1, 0, 0, 0 });
+            Hashtable attributes = new Hashtable(1);
+            attributes.Add(PKCS9.localKeyId, list);
+            return attributes;
+        }
+
+        private static byte[] GenerateSerialNumber()
+        {
+            byte[] sn = Guid.NewGuid().ToByteArray();
+
+            //must be positive
+            if ((sn[0] & 0x80) == 0x80)
+                sn[0] -= 0x80;
+            return sn;
+        }
+
+        public static byte[] GetCertificateForBytes(byte[] pfx, string password)
+        {
+            var pkcs = new PKCS12(pfx, password);
+            var cert = pkcs.GetCertificate(GetAttributes());
+
+            return cert.RawData;
+        }
+    }
+}