diff --git a/crypto/test/src/openpgp/examples/PbeFileProcessor.cs b/crypto/test/src/openpgp/examples/PbeFileProcessor.cs
new file mode 100644
index 000000000..66b1cc4ed
--- /dev/null
+++ b/crypto/test/src/openpgp/examples/PbeFileProcessor.cs
@@ -0,0 +1,183 @@
+using System;
+using System.IO;
+
+using Org.BouncyCastle.Bcpg.OpenPgp;
+using Org.BouncyCastle.Security;
+using Org.BouncyCastle.Utilities.IO;
+
+namespace Org.BouncyCastle.Bcpg.OpenPgp.Examples
+{
+ /**
+ * A simple utility class that encrypts/decrypts password based
+ * encryption files.
+ * <p>
+ * To encrypt a file: PBEFileProcessor -e [-ai] fileName passPhrase.<br/>
+ * If -a is specified the output file will be "ascii-armored".<br/>
+ * If -i is specified the output file will be "integrity protected".</p>
+ * <p>
+ * To decrypt: PBEFileProcessor -d fileName passPhrase.</p>
+ * <p>
+ * Note: this example will silently overwrite files, nor does it pay any attention to
+ * the specification of "_CONSOLE" in the filename. It also expects that a single pass phrase
+ * will have been used.</p>
+ */
+ public sealed class PbeFileProcessor
+ {
+ private PbeFileProcessor() {}
+
+ private static void DecryptFile(string inputFileName, char[] passPhrase)
+ {
+ using (Stream input = File.OpenRead(inputFileName))
+ {
+ DecryptFile(input, passPhrase);
+ }
+ }
+
+ /**
+ * decrypt the passed in message stream
+ */
+ private static void DecryptFile(
+ Stream inputStream,
+ char[] passPhrase)
+ {
+ inputStream = PgpUtilities.GetDecoderStream(inputStream);
+
+ PgpObjectFactory pgpF = new PgpObjectFactory(inputStream);
+ PgpObject o = pgpF.NextPgpObject();
+
+ //
+ // the first object might be a PGP marker packet.
+ //
+ PgpEncryptedDataList enc = o as PgpEncryptedDataList;
+ if (enc == null)
+ {
+ enc = (PgpEncryptedDataList)pgpF.NextPgpObject();
+ }
+
+ PgpPbeEncryptedData pbe = (PgpPbeEncryptedData)enc[0];
+
+ Stream clear = pbe.GetDataStream(passPhrase);
+
+ PgpObjectFactory pgpFact = new PgpObjectFactory(clear);
+
+ //
+ // if we're trying to read a file generated by someone other than us
+ // the data might not be compressed, so we check the return type from
+ // the factory and behave accordingly.
+ //
+ o = pgpFact.NextPgpObject();
+ if (o is PgpCompressedData)
+ {
+ PgpCompressedData cData = (PgpCompressedData) o;
+ pgpFact = new PgpObjectFactory(cData.GetDataStream());
+ o = pgpFact.NextPgpObject();
+ }
+
+ PgpLiteralData ld = (PgpLiteralData) o;
+ Stream unc = ld.GetInputStream();
+ Stream fOut = File.Create(ld.FileName);
+ Streams.PipeAll(unc, fOut);
+ fOut.Close();
+
+ if (pbe.IsIntegrityProtected())
+ {
+ if (!pbe.Verify())
+ {
+ Console.Error.WriteLine("message failed integrity check");
+ }
+ else
+ {
+ Console.Error.WriteLine("message integrity check passed");
+ }
+ }
+ else
+ {
+ Console.Error.WriteLine("no message integrity check");
+ }
+ }
+
+ private static void EncryptFile(
+ string outputFileName,
+ string inputFileName,
+ char[] passPhrase,
+ bool armor,
+ bool withIntegrityCheck)
+ {
+ using (Stream output = File.Create(outputFileName))
+ {
+ EncryptFile(output, inputFileName, passPhrase, armor, withIntegrityCheck);
+ }
+ }
+
+ private static void EncryptFile(
+ Stream outputStream,
+ string fileName,
+ char[] passPhrase,
+ bool armor,
+ bool withIntegrityCheck)
+ {
+ if (armor)
+ {
+ outputStream = new ArmoredOutputStream(outputStream);
+ }
+
+ try
+ {
+ byte[] compressedData = PgpExampleUtilities.CompressFile(fileName, CompressionAlgorithmTag.Zip);
+
+ PgpEncryptedDataGenerator encGen = new PgpEncryptedDataGenerator(
+ SymmetricKeyAlgorithmTag.Cast5, withIntegrityCheck, new SecureRandom());
+ encGen.AddMethod(passPhrase);
+
+ Stream encOut = encGen.Open(outputStream, compressedData.Length);
+
+ encOut.Write(compressedData, 0, compressedData.Length);
+ encOut.Close();
+
+ if (armor)
+ {
+ outputStream.Close();
+ }
+ }
+ catch (PgpException e)
+ {
+ Console.Error.WriteLine(e);
+
+ Exception underlyingException = e.InnerException;
+ if (underlyingException != null)
+ {
+ Console.Error.WriteLine(underlyingException.Message);
+ Console.Error.WriteLine(underlyingException.StackTrace);
+ }
+ }
+ }
+
+ public static void Main(
+ string[] args)
+ {
+ if (args[0].Equals("-e"))
+ {
+ if (args[1].Equals("-a") || args[1].Equals("-ai") || args[1].Equals("-ia"))
+ {
+ EncryptFile(args[2] + ".asc", args[2], args[3].ToCharArray(), true, (args[1].IndexOf('i') > 0));
+ }
+ else if (args[1].Equals("-i"))
+ {
+ EncryptFile(args[2] + ".bpg", args[2], args[3].ToCharArray(), false, true);
+ }
+ else
+ {
+ EncryptFile(args[1] + ".bpg", args[1], args[2].ToCharArray(), false, false);
+ }
+ }
+ else if (args[0].Equals("-d"))
+ {
+ DecryptFile(args[1], args[2].ToCharArray());
+ }
+ else
+ {
+ Console.Error.WriteLine("usage: PbeFileProcessor -e [-ai]|-d file passPhrase");
+ }
+ }
+ }
+}
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