Fix bytes retrieval from pdf byte string during PdfEncryption init

DEVSIX-526

Autoported commit.
Original commit hash: [8b5d9497c]

Author: BlackEgoist

itext.tests/itext.kernel.tests/itext/kernel/crypto/PdfEncryptionTest.cs

@@ -611,6 +611,27 @@ public virtual void EncryptAes256Pdf2Permissions() {
             CompareEncryptedPdf(filename);
         }
 
+        /// <exception cref="System.Exception"/>
+        [NUnit.Framework.Test]
+        public virtual void EncryptWithPasswordAes128NoMetadataCompression() {
+            String srcFilename = "srcEncryptWithPasswordAes128NoMetadataCompression.pdf";
+            PdfReader reader = new PdfReader(sourceFolder + srcFilename, new ReaderProperties());
+            WriterProperties props = new WriterProperties().SetStandardEncryption("superuser".GetBytes(), "superowner"
+                .GetBytes(), EncryptionConstants.ALLOW_PRINTING, EncryptionConstants.ENCRYPTION_AES_128 | EncryptionConstants
+                .DO_NOT_ENCRYPT_METADATA);
+            String outFilename = "encryptWithPasswordAes128NoMetadataCompression.pdf";
+            PdfWriter writer = new PdfWriter(destinationFolder + outFilename, props);
+            PdfDocument pdfDoc = new PdfDocument(reader, writer);
+            pdfDoc.Close();
+            CompareTool compareTool = new CompareTool();
+            compareTool.EnableEncryptionCompare();
+            compareTool.GetOutReaderProperties().SetPassword("superowner".GetBytes());
+            compareTool.GetCmpReaderProperties().SetPassword("superowner".GetBytes());
+            String outPdf = destinationFolder + outFilename;
+            String cmpPdf = sourceFolder + "cmp_" + outFilename;
+            NUnit.Framework.Assert.IsNull(compareTool.CompareByContent(outPdf, cmpPdf, destinationFolder, "diff_"));
+        }
+
         /// <exception cref="iText.Kernel.XMP.XMPException"/>
         /// <exception cref="System.IO.IOException"/>
         /// <exception cref="System.Exception"/>

itext.tests/itext.kernel.tests/resources/itext/kernel/crypto/PdfEncryptionTest/cmp_encryptWithPasswordAes128NoMetadataCompression.pdf

@@ -186,7 +186,7 @@ protected internal virtual void InitCryptoIfSpecified(PdfVersion version) {
             EncryptionProperties encryptProps = properties.encryptionProperties;
             if (properties.IsStandardEncryptionUsed()) {
                 crypto = new PdfEncryption(encryptProps.userPassword, encryptProps.ownerPassword, encryptProps.standardEncryptPermissions
-                    , encryptProps.encryptionAlgorithm, ByteUtils.GetIsoBytes(this.document.GetOriginalDocumentId().ToString
+                    , encryptProps.encryptionAlgorithm, ByteUtils.GetIsoBytes(this.document.GetOriginalDocumentId().GetValue
                     ()), version);
             }
             else {

itext.tests/itext.kernel.tests/resources/itext/kernel/crypto/PdfEncryptionTest/srcEncryptWithPasswordAes128NoMetadataCompression.pdf

@@ -1 +1 @@
-f0e758a49c8c1bb60c79dfc5da156ecf6a2e89cb
+8b5d9497c4ebf8ac62a14344b7a1acafaf960356