Add PAdES baseline electronic signature sample for .NET Framework

.github/workflows/test-net-framework-samples.yml

@@ -93,6 +93,7 @@ jobs:
               'Other/StreamIO/',
               'Printing/PrintPDF/',
               'Printing/PrintPDFGUI/',
+              'Security/AddBasicPAdESElectronicSignature/',
               'Security/AddDigitalSignatureCMS/',
               'Security/AddDigitalSignatureRFC3161/',
               'Security/AddRegexRedaction/',

Samples.sln

@@ -180,6 +180,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RegexTextSearch", "Text\Reg
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TextExtract", "Text\TextExtract\TextExtract.csproj", "{11C4A647-3DDA-41A5-855C-E14EDF1BFFDE}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AddBasicPAdESElectronicSignature", "Security\AddBasicPAdESElectronicSignature\AddBasicPAdESElectronicSignature.csproj", "{C7DF1472-B78F-402E-8841-52D2CB2B4725}"
+EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AddDigitalSignatureCMS", "Security\AddDigitalSignatureCMS\AddDigitalSignatureCMS.csproj", "{AB753937-DF3D-4B06-B475-D3B597D32BC5}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AddDigitalSignatureRFC3161", "Security\AddDigitalSignatureRFC3161\AddDigitalSignatureRFC3161.csproj", "{74FA984E-AB89-475A-9077-9D612DE12AEC}"
@@ -554,6 +556,10 @@ Global
 		{74FA984E-AB89-475A-9077-9D612DE12AEC}.Debug|x64.Build.0 = Debug|x64
 		{74FA984E-AB89-475A-9077-9D612DE12AEC}.Release|x64.ActiveCfg = Release|x64
 		{74FA984E-AB89-475A-9077-9D612DE12AEC}.Release|x64.Build.0 = Release|x64
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Debug|x64.ActiveCfg = Debug|x64
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Debug|x64.Build.0 = Debug|x64
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Release|x64.ActiveCfg = Release|x64
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Security/AddBasicPAdESElectronicSignature/AddBasicPAdESElectronicSignature.cs

@@ -0,0 +1,86 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Datalogics.PDFL;
+
+/*
+ *
+ * This sample program demonstrates the use of AddDigitalSignature for PAdES
+ * (PDF Advanced Electronic Signatures) baseline signature type without a
+ * signature policy. PAdES signatures conform to the ETSI standard and use
+ * the ETSI.CAdES.detached SubFilter.
+ *
+ * Copyright (c) 2026, Datalogics, Inc. All rights reserved.
+ *
+ */
+namespace AddBasicPAdESElectronicSignature
+{
+    class AddBasicPAdESElectronicSignature
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("AddBasicPAdESElectronicSignature Sample:");
+
+            using (new Library())
+            {
+                Console.WriteLine("Initialized the library.");
+
+                String sInput = Library.ResourceDirectory + "Sample_Input/SixPages.pdf";
+                String sLogo = Library.ResourceDirectory + "Sample_Input/ducky_alpha.tif";
+                String sOutput = "PAdESBaselineSignature-out.pdf";
+
+                String sPEMCert = Library.ResourceDirectory + "Sample_Input/Credentials/PEM/ecSecP521r1Cert.pem";
+                String sPEMKey = Library.ResourceDirectory + "Sample_Input/Credentials/PEM/ecSecP521r1Key.pem";
+
+                if (args.Length > 0)
+                    sInput = args[0];
+
+                if (args.Length > 1)
+                    sOutput = args[1];
+
+                if (args.Length > 2)
+                    sLogo = args[2];
+
+                Console.WriteLine("Input file: " + sInput);
+                Console.WriteLine("Writing to output: " + sOutput);
+
+                using (Document doc = new Document(sInput))
+                {
+                    using (Datalogics.PDFL.SignDoc sigDoc = new Datalogics.PDFL.SignDoc())
+                    {
+                        // Setup Sign params
+                        sigDoc.FieldID = SignatureFieldID.CreateFieldWithQualifiedName;
+                        sigDoc.FieldName = "Signature_es_:signatureblock";
+
+                        // Set credential related attributes
+                        sigDoc.DigestCategory = DigestCategory.Sha384;
+                        sigDoc.CredentialDataFormat = CredentialDataFmt.NonPFX;
+                        sigDoc.SetNonPfxSignerCert(sPEMCert, 0, CredentialStorageFmt.OnDisk);
+                        sigDoc.SetNonPfxPrivateKey(sPEMKey, 0, CredentialStorageFmt.OnDisk);
+
+                        // Set the signature type to PAdES (PDF Advanced Electronic Signatures).
+                        // This produces an ETSI.CAdES.detached signature conforming to the
+                        // PAdES baseline profile without a signature policy.
+                        sigDoc.DocSignType = SignatureType.PADES;
+
+                        // Setup the signer information
+                        // (Logo image is optional)
+                        sigDoc.SetSignerInfo(sLogo, 0.5F, "John Doe", "Chicago, IL", "Approval", "Datalogics, Inc.",
+                            DisplayTraits.KDisplayAll);
+
+                        // Set the size and location of the signature box (optional)
+                        // If not set, invisible signature will be placed on first page
+                        sigDoc.SignatureBoxPageNumber = 0;
+                        sigDoc.SignatureBoxRectangle = new Rect(100, 300, 400, 400);
+
+                        // Setup Save params
+                        sigDoc.OutputPath = sOutput;
+
+                        // Finally, sign and save the document
+                        sigDoc.AddDigitalSignature(doc);
+                    }
+                }
+            }
+        }
+    }
+}

Security/AddBasicPAdESElectronicSignature/AddBasicPAdESElectronicSignature.csproj

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x64</Platform>
+    <ProjectGuid>{C7DF1472-B78F-402E-8841-52D2CB2B4725}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>AddBasicPAdESElectronicSignature</RootNamespace>
+    <AssemblyName>AddBasicPAdESElectronicSignature</AssemblyName>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x64' ">
+    <PlatformTarget>x64</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x64' ">
+    <PlatformTarget>x64</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="AddBasicPAdESElectronicSignature.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Adobe.PDF.Library.LM.NETFramework">
+      <Version>18.*</Version>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Properties\" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>

Security/AddBasicPAdESElectronicSignature/AddBasicPAdESElectronicSignature.sln

@@ -0,0 +1,24 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36414.22 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AddBasicPAdESElectronicSignature", "AddBasicPAdESElectronicSignature.csproj", "{C7DF1472-B78F-402E-8841-52D2CB2B4725}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Debug|x64.ActiveCfg = Debug|x64
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Debug|x64.Build.0 = Debug|x64
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Release|x64.ActiveCfg = Release|x64
+		{C7DF1472-B78F-402E-8841-52D2CB2B4725}.Release|x64.Build.0 = Release|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {1320D004-1376-4D4F-BFD2-A33DC360756F}
+	EndGlobalSection
+EndGlobal

Security/AddBasicPAdESElectronicSignature/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup>
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+    </startup>
+</configuration>

Security/README.md

@@ -1,3 +1,6 @@
+## ***AddBasicPAdESElectronicSignature***
+Demonstrates adding a PAdES B-T baseline electronic signature to a PDF document.
+
 ## ***AddDigitalSignatureCMS***
 Demonstrates adding a digital signature with a logo to a PDF document.