263723: Added PEM certificate sample

Digital Signature/Sign-PDF-with-PEM-Certificate/.NET/Sign-PDF-with-PEM-Certificate.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36616.10 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sign-PDF-with-PEM-Certificate", "Sign-PDF-with-PEM-Certificate\Sign-PDF-with-PEM-Certificate.csproj", "{15D14533-D3DD-4F05-9652-4DF196C648E3}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{15D14533-D3DD-4F05-9652-4DF196C648E3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{15D14533-D3DD-4F05-9652-4DF196C648E3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{15D14533-D3DD-4F05-9652-4DF196C648E3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{15D14533-D3DD-4F05-9652-4DF196C648E3}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6F0575C6-8A8D-414F-84C6-11C432B44578}
+	EndGlobalSection
+EndGlobal

Digital Signature/Sign-PDF-with-PEM-Certificate/.NET/Sign-PDF-with-PEM-Certificate/Data/certificate.cer

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+-----BEGIN CERTIFICATE-----
+MIIEIDCCA+CgAwIBAgIUd5tYHFakkBrSoRMsnF9bwlIdj7YwCQYHKoZIzjgEAzAjMSEwHwYDVQQD
+ExhUb2tlbiBTaWduaW5nIFB1YmxpYyBLZXkwHhcNMTcwNTExMDUxMjE4WhcNMTcwNTE4MDUxMjE4
+WjAtMSswKQYDVQQDHiIANQAxADUANQA4AGIANAAxAGQANwBhADgAYgAzADgANQAAMIGfMA0GCSqG
+SIb3DQEBAQUAA4GNADCBiQKBgQCreQXHLNcWSKp4pKYo0p8J/t77ZWGdJdlM1RxgrjPxnCpUtrhb
+2mqwha5fJ/sKRzU/dEUa5dPZCZWcT6sqX5/Hlrvm2/c5Ij59vohOxdwEhxuL1HMLjQdtz3hZTE91
+DD6/uu330xWUoEV9IobGitsrhRTykVVNnvA64I09lvnEuwIDAQABo4ICoDCCApwwDgYDVR0PAQH/
+BAQDAgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMCMIIB/wYDVR0gBIIB9jCCAfIwggHuBgorBgEEAYI3
+MwMCMIIB3jCCAdoGCCsGAQUFBwICMIIBzB6CAcgATQBpAGMAcgBvAHMAbwBmAHQAIABkAG8AZQBz
+ACAAbgBvAHQAIAB3AGEAcgByAGEAbgB0ACAAbwByACAAYwBsAGEAaQBtACAAdABoAGEAdAAgAHQA
+aABlACAAaQBuAGYAbwByAG0AYQB0AGkAbwBuACAAZABpAHMAcABsAGEAeQBlAGQAIABpAG4AIAB0
+AGgAaQBzACAAYwBlAHIAdABpAGYAaQBjAGEAdABlACAAaQBzACAAYwB1AHIAcgBlAG4AdAAgAG8A
+cgAgAGEAYwBjAHUAcgBhAHQAZQAsACAAbgBvAHIAIABkAG8AZQBzACAAaQB0ACAAbQBhAGsAZQAg
+AGEAbgB5ACAAZgBvAHIAbQBhAGwAIABzAHQAYQB0AGUAbQBlAG4AdABzACAAYQBiAG8AdQB0ACAA
+dABoAGUAIABxAHUAYQBsAGkAdAB5ACAAbwByACAAcwBhAGYAZQB0AHkAIABvAGYAIABkAGEAdABh
+ACAAcwBpAGcAbgBlAGQAIAB3AGkAdABoACAAdABoAGUAIABjAG8AcgByAGUAcwBwAG8AbgBkAGkA
+bgBnACAAcAByAGkAdgBhAHQAZQAgAGsAZQB5AC4wUwYDVR0jBEwwSoAURtLCWz4DNCN5LhccABko
+THEQK2ShJ6QlMCMxITAfBgNVBAMTGFRva2VuIFNpZ25pbmcgUHVibGljIEtleYIJAL67zDTCqZpD
+MB0GA1UdDgQWBBR+L+E5CKYJmufz2XcGMOFu+hb3LjAJBgcqhkjOOAQDAy8AMCwCFErwQFvnFgVT
+Pcnh4wfjaGMjKStIAhQJ9ouuyB8Ot8+emod0q68bbGuEWg==
+-----END CERTIFICATE-----

Digital Signature/Sign-PDF-with-PEM-Certificate/.NET/Sign-PDF-with-PEM-Certificate/Data/privatekey.pem

@@ -0,0 +1,15 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

Digital Signature/Sign-PDF-with-PEM-Certificate/.NET/Sign-PDF-with-PEM-Certificate/Program.cs

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+using Org.BouncyCastle.Asn1.Pkcs;
+using Org.BouncyCastle.Crypto;
+using Org.BouncyCastle.OpenSsl;
+using Org.BouncyCastle.Pkcs;
+using Org.BouncyCastle.Security;
+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Security;
+
+//Creates a new PDF document.
+using (PdfDocument document = new PdfDocument())
+{
+    //Add a new page.
+    PdfPageBase page = document.Pages.Add();
+    PdfGraphics graphics = page.Graphics;
+    //Get the certificate file.
+    Org.BouncyCastle.X509.X509CertificateParser cp = new Org.BouncyCastle.X509.X509CertificateParser();
+    Org.BouncyCastle.X509.X509Certificate cert = cp.ReadCertificate(File.ReadAllBytes(Path.GetFullPath(@"Data/certificate.cer")));
+    //Read the PEM file.
+    PemReader pmr = new PemReader(new StringReader(File.ReadAllText(Path.GetFullPath(@"Data/privateKey.pem"))));
+    AsymmetricCipherKeyPair KeyPair = (AsymmetricCipherKeyPair)pmr.ReadObject();
+    //Get the PFX file stream. 
+    Stream pfxFile = CreatePfxFile(cert, KeyPair.Private);
+    //Creates a certificate instance from the PFX file with a private key.
+    PdfCertificate pdfCert = new PdfCertificate(pfxFile, "syncfusion");
+    //Creates a digital signature.
+    PdfSignature signature = new PdfSignature(document, page, pdfCert, "Signature");
+    //Sets the signature information.
+    signature.Bounds = new RectangleF(new PointF(0, 0), new SizeF(300, 100));
+    signature.ContactInfo = "[email protected]";
+    signature.LocationInfo = "Honolulu, Hawaii";
+    signature.Reason = "I am author of this document.";
+    FileStream imageStream = new FileStream(Path.GetFullPath(@"Data/Logo.png"), FileMode.Open, FileAccess.Read);
+    //Load an image file.
+    PdfBitmap image = new PdfBitmap(imageStream);
+    //Draw an image in the signature appearance.
+    signature.Appearance.Normal.Graphics.DrawImage(image, new RectangleF(0, 0, 300, 100));
+    //Saves the document.
+    document.Save(Path.GetFullPath(@"Output/Output.pdf"));
+}
+
+// Create a PFX file using the BouncyCastle.
+ static Stream CreatePfxFile(Org.BouncyCastle.X509.X509Certificate certificate, AsymmetricKeyParameter privateKey)
+{
+    //Create a certificate entry.
+    X509CertificateEntry certEntry = new X509CertificateEntry(certificate);
+    string friendlyName = certificate.SubjectDN.ToString();
+    //Get bytes of the private key.
+    PrivateKeyInfo keyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(privateKey);
+    byte[] keyBytes = keyInfo.ToAsn1Object().GetEncoded();
+    Pkcs12StoreBuilder builder = new Pkcs12StoreBuilder();
+    builder.SetUseDerEncoding(true);
+    Pkcs12Store store = builder.Build();
+    //Create a store entry.
+    store.SetKeyEntry("private", new AsymmetricKeyEntry(privateKey), new X509CertificateEntry[] { certEntry });
+    //Save the story to the stream.
+    MemoryStream stream = new MemoryStream();
+    store.Save(stream, "syncfusion".ToCharArray(), new SecureRandom());
+    return stream;
+}

Digital Signature/Sign-PDF-with-PEM-Certificate/.NET/Sign-PDF-with-PEM-Certificate/Sign-PDF-with-PEM-Certificate.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Sign_PDF_with_PEM_Certificate</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Portable.BouncyCastle" Version="1.9.0" />
+    <PackageReference Include="Syncfusion.Pdf.Net.Core" Version="*" />
+  </ItemGroup>
+
+</Project>