change timestamp server

Author: geumjaLee

CS/PdfDocumentProcessor/Program.cs

@@ -25,7 +25,7 @@ public static void ApplySignatures()
  signatureFieldInfo.RotationAngle = PdfAcroFormFieldRotation.Rotate90;
 
  //Create a timestamp
- ITsaClient tsaClient = new PdfTsaClient(new Uri(@"http://timestamp.apple.com/ts01"), PdfHashAlgorithm.SHA256);
+ ITsaClient tsaClient = new PdfTsaClient(new Uri(@"https://freetsa.org/tsr"), PdfHashAlgorithm.SHA256);
 
  //Create a PKCS#7 signature
  Pkcs7Signer pkcs7Signature = new Pkcs7Signer("Signing Documents//certificate.pfx", "123", PdfHashAlgorithm.SHA256, tsaClient);

VB/PdfDocumentProcessor/Program.vb

@@ -20,7 +20,7 @@ Namespace PdfDocumentProcessor
 signatureFieldInfo.RotationAngle = PdfAcroFormFieldRotation.Rotate90
 
 'Create a timestamp
-Dim tsaClient As ITsaClient = New PdfTsaClient(New Uri("http://timestamp.apple.com/ts01"), PdfHashAlgorithm.SHA256)
+Dim tsaClient As ITsaClient = New PdfTsaClient(New Uri("https://freetsa.org/tsr"), PdfHashAlgorithm.SHA256)
 
 'Create a PKCS#7 signature
 Dim pkcs7Signature As New Pkcs7Signer("Signing Documents//certificate.pfx", "123", PdfHashAlgorithm.SHA256, tsaClient)