diff --git a/itext.tests/itext.sign.tests/itext/signatures/LtvVerificationTest.cs b/itext.tests/itext.sign.tests/itext/signatures/LtvVerificationTest.cs
index c71bfa692..a8f2bd732 100644
--- a/itext.tests/itext.sign.tests/itext/signatures/LtvVerificationTest.cs
+++ b/itext.tests/itext.sign.tests/itext/signatures/LtvVerificationTest.cs
@@ -42,7 +42,7 @@ namespace iText.Signatures {
 
         private const String SIG_FIELD_NAME = "Signature1";
 
-        private const String CRL_DISTRIBUTION_POINT = "https://example.com";
+        private const String CRL_DISTRIBUTION_POINT = "https://itextpdf.com";
 
         private static readonly String CERT_FOLDER_PATH = iText.Test.TestUtil.GetParentProjectDirectory(NUnit.Framework.TestContext
             .CurrentContext.TestDirectory) + "/resources/itext/signatures/certs/";
@@ -312,136 +312,136 @@ namespace iText.Signatures {
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningOcspCrlYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.OCSP_CRL, LtvVerification.CertificateInclusion.YES, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningOcspYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.OCSP, LtvVerification.CertificateInclusion.YES, false);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningCrlYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.CRL, LtvVerification.CertificateInclusion.YES, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningOcspOptionalCrlYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.OCSP_OPTIONAL_CRL, LtvVerification.CertificateInclusion.YES, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningOcspCrlNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.OCSP_CRL, LtvVerification.CertificateInclusion.NO, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningOcspNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.OCSP, LtvVerification.CertificateInclusion.NO, false);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningCrlNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.CRL, LtvVerification.CertificateInclusion.NO, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameSigningOcspOptionalCrlNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.SIGNING_CERTIFICATE
                 , LtvVerification.Level.OCSP_OPTIONAL_CRL, LtvVerification.CertificateInclusion.NO, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
         public virtual void ValidateSigNameWholeChainOcspCrlYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .OCSP_CRL, LtvVerification.CertificateInclusion.YES, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
         public virtual void ValidateSigNameWholeChainOcspOptionalCrlYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .OCSP_OPTIONAL_CRL, LtvVerification.CertificateInclusion.YES, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameWholeChainOcspYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .OCSP, LtvVerification.CertificateInclusion.YES, false);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
         public virtual void ValidateSigNameWholeChainCrlYesTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .CRL, LtvVerification.CertificateInclusion.YES, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
         public virtual void ValidateSigNameWholeChainOcspCrlNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .OCSP_CRL, LtvVerification.CertificateInclusion.NO, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
         public virtual void ValidateSigNameWholeChainOcspOptionalCrlNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .OCSP_OPTIONAL_CRL, LtvVerification.CertificateInclusion.NO, true);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
         public virtual void ValidateSigNameWholeChainOcspNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .OCSP, LtvVerification.CertificateInclusion.NO, false);
         }
 
         [NUnit.Framework.Test]
-        [LogMessage("Added CRL url: https://example.com", LogLevel = LogLevelConstants.INFO)]
-        [LogMessage("Checking CRL: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
-        [LogMessage("Added CRL found at: https://example.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL url: https://itextpdf.com", LogLevel = LogLevelConstants.INFO)]
+        [LogMessage("Checking CRL: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
+        [LogMessage("Added CRL found at: https://itextpdf.com", LogLevel = LogLevelConstants.INFO, Count = 2)]
         public virtual void ValidateSigNameWholeChainCrlNoTest() {
             ValidateOptionLevelInclusion(CRL_DISTRIBUTION_POINT, LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level
                 .CRL, LtvVerification.CertificateInclusion.NO, true);
diff --git a/itext/itext.sign/itext/signatures/validation/xml/IDefaultXmlHandler.cs b/itext/itext.sign/itext/signatures/validation/xml/IDefaultXmlHandler.cs
index 8f92161d6..5eb203671 100644
--- a/itext/itext.sign/itext/signatures/validation/xml/IDefaultXmlHandler.cs
+++ b/itext/itext.sign/itext/signatures/validation/xml/IDefaultXmlHandler.cs
@@ -24,11 +24,25 @@ using System;
 using System.Collections.Generic;
 
 namespace iText.Signatures.Validation.Xml {
+    /// <summary>Interface for handling XML elements during SAX processing.</summary>
     public interface IDefaultXmlHandler {
+        /// <summary>Called when a start element is encountered in the XML document.</summary>
+        /// <param name="uri">the namespace URI of the element</param>
+        /// <param name="localName">the local name of the element</param>
+        /// <param name="qName">the qualified name of the element</param>
+        /// <param name="attributes">a map of attributes associated with the element</param>
         void StartElement(String uri, String localName, String qName, Dictionary<String, String> attributes);
 
+        /// <summary>Called when an end element is encountered in the XML document.</summary>
+        /// <param name="uri">the namespace URI of the element</param>
+        /// <param name="localName">the local name of the element</param>
+        /// <param name="qName">the qualified name of the element</param>
         void EndElement(String uri, String localName, String qName);
 
+        /// <summary>Called when character data is encountered within an element.</summary>
+        /// <param name="ch">the character array containing the data</param>
+        /// <param name="start">the start index of the data in the array</param>
+        /// <param name="length">the length of the data</param>
         void Characters(char[] ch, int start, int length);
     }
 }
diff --git a/port-hash b/port-hash
index 354872a78..4535e8953 100644
--- a/port-hash
+++ b/port-hash
@@ -1 +1 @@
-3e0301e80c4c333f7b3927d20c25714e117032b9
+4fa42c3e8a93f076b8d0ce7d31cfd88704348ac4