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itext.tests/itext.sign.tests/itext/signatures/PdfTwoPhaseSignerUnitTest.cs
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| /* | ||
| This file is part of the iText (R) project. | ||
| Copyright (c) 1998-2024 Apryse Group NV | ||
| Authors: Apryse Software. | ||
| This program is offered under a commercial and under the AGPL license. | ||
| For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below. | ||
| AGPL licensing: | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU Affero General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU Affero General Public License for more details. | ||
| You should have received a copy of the GNU Affero General Public License | ||
| along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
| using System; | ||
| using System.IO; | ||
| using iText.Bouncycastleconnector; | ||
| using iText.Commons.Bouncycastle; | ||
| using iText.IO.Source; | ||
| using iText.Kernel.Pdf; | ||
| using iText.Test; | ||
|
|
||
| namespace iText.Signatures { | ||
| [NUnit.Framework.Category("BouncyCastleUnitTest")] | ||
| public class PdfTwoPhaseSignerUnitTest : ExtendedITextTest { | ||
| private static readonly IBouncyCastleFactory FACTORY = BouncyCastleFactoryCreator.GetFactory(); | ||
|
|
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| private static readonly byte[] OWNER = "owner".GetBytes(System.Text.Encoding.UTF8); | ||
|
|
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| private static readonly byte[] USER = "user".GetBytes(System.Text.Encoding.UTF8); | ||
|
|
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| private static readonly String PDFA_RESOURCES = iText.Test.TestUtil.GetParentProjectDirectory(NUnit.Framework.TestContext | ||
| .CurrentContext.TestDirectory) + "/resources/itext/signatures/pdfa/"; | ||
|
|
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| private static readonly String DESTINATION_FOLDER = NUnit.Framework.TestContext.CurrentContext.TestDirectory | ||
| + "/test/itext/signatures/Pdf2PhaseSignerUnitTest/"; | ||
|
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| private static readonly String CERTS_SRC = iText.Test.TestUtil.GetParentProjectDirectory(NUnit.Framework.TestContext | ||
| .CurrentContext.TestDirectory) + "/resources/itext/signatures/certs/"; | ||
|
|
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| private static readonly char[] PASSWORD = "testpassphrase".ToCharArray(); | ||
|
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| [NUnit.Framework.OneTimeSetUp] | ||
| public static void Before() { | ||
| CreateOrClearDestinationFolder(DESTINATION_FOLDER); | ||
| } | ||
|
|
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| [NUnit.Framework.Test] | ||
| public virtual void PrepareDocumentTestWithSHA256() { | ||
| PdfReader reader = new PdfReader(new MemoryStream(CreateSimpleDocument())); | ||
| ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); | ||
| PdfTwoPhaseSigner signer = new PdfTwoPhaseSigner(reader, outputStream); | ||
| int estimatedSize = 8079; | ||
| SignerProperties signerProperties = new SignerProperties(); | ||
| byte[] digest = signer.PrepareDocumentForSignature(signerProperties, DigestAlgorithms.SHA256, PdfName.Adobe_PPKLite | ||
| , PdfName.Adbe_pkcs7_detached, estimatedSize, false); | ||
| String fieldName = signerProperties.GetFieldName(); | ||
| PdfReader resultReader = new PdfReader(new MemoryStream(outputStream.ToArray())); | ||
| PdfDocument resultDoc = new PdfDocument(resultReader); | ||
| SignatureUtil signatureUtil = new SignatureUtil(resultDoc); | ||
| PdfSignature signature = signatureUtil.GetSignature(fieldName); | ||
| NUnit.Framework.Assert.AreEqual(estimatedSize, signature.GetContents().GetValueBytes().Length); | ||
| } | ||
|
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| [NUnit.Framework.Test] | ||
| public virtual void AddSignatureToPreparedDocumentTest() { | ||
| PdfReader reader = new PdfReader(new MemoryStream(CreateSimpleDocument())); | ||
| ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); | ||
| PdfTwoPhaseSigner signer = new PdfTwoPhaseSigner(reader, outputStream); | ||
| int estimatedSize = 8079; | ||
| SignerProperties signerProperties = new SignerProperties(); | ||
| byte[] digest = signer.PrepareDocumentForSignature(signerProperties, DigestAlgorithms.SHA256, PdfName.Adobe_PPKLite | ||
| , PdfName.Adbe_pkcs7_detached, estimatedSize, false); | ||
| String fieldName = signerProperties.GetFieldName(); | ||
| PdfReader resultReader = new PdfReader(new MemoryStream(outputStream.ToArray())); | ||
| PdfDocument resultDoc = new PdfDocument(resultReader); | ||
| ByteArrayOutputStream completedOutputStream = new ByteArrayOutputStream(); | ||
| byte[] testData = ByteUtils.GetIsoBytes("Some data to test the signature addition with"); | ||
| PdfTwoPhaseSigner.AddSignatureToPreparedDocument(resultDoc, fieldName, completedOutputStream, testData); | ||
| resultReader = new PdfReader(new MemoryStream(completedOutputStream.ToArray())); | ||
| resultDoc = new PdfDocument(resultReader); | ||
| SignatureUtil signatureUtil = new SignatureUtil(resultDoc); | ||
| PdfSignature signature = signatureUtil.GetSignature(fieldName); | ||
| byte[] content = signature.GetContents().GetValueBytes(); | ||
| for (int i = 0; i < testData.Length; i++) { | ||
| NUnit.Framework.Assert.AreEqual(testData[i], content[i]); | ||
| } | ||
| } | ||
|
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| private static byte[] CreateSimpleDocument() { | ||
| return CreateSimpleDocument(PdfVersion.PDF_1_7); | ||
| } | ||
|
|
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| private static byte[] CreateSimpleDocument(PdfVersion version) { | ||
| ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); | ||
| WriterProperties writerProperties = new WriterProperties(); | ||
| if (null != version) { | ||
| writerProperties.SetPdfVersion(version); | ||
| } | ||
| PdfDocument document = new PdfDocument(new PdfWriter(outputStream, writerProperties)); | ||
| document.AddNewPage(); | ||
| document.Close(); | ||
| return outputStream.ToArray(); | ||
| } | ||
| } | ||
| } |
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