1 files changed, 140 insertions, 0 deletions
diff --git a/crypto/test/src/openpgp/examples/DirectKeySignature.cs b/crypto/test/src/openpgp/examples/DirectKeySignature.cs
new file mode 100644
index 000000000..a6bf8e755
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+++ b/crypto/test/src/openpgp/examples/DirectKeySignature.cs
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+using System;
+using System.IO;
+
+using Org.BouncyCastle.Bcpg;
+using Org.BouncyCastle.Bcpg.Sig;
+
+namespace Org.BouncyCastle.Bcpg.OpenPgp.Examples
+{
+	/**
+	* A simple utility class that directly signs a public key and writes the signed key to "SignedKey.asc" in 
+	* the current working directory.
+	* <p>
+	* To sign a key: DirectKeySignature secretKeyFile secretKeyPass publicKeyFile(key to be signed) NotationName NotationValue.<br/>
+	* </p><p>
+	* To display a NotationData packet from a publicKey previously signed: DirectKeySignature signedPublicKeyFile.<br/>
+	* </p><p>
+	* <b>Note</b>: 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 class DirectKeySignature
+	{
+		public static void Main(
+			string[] args)
+		{
+			if (args.Length == 1)
+			{
+				Stream fis = File.OpenRead(args[0]);
+
+				PgpPublicKeyRing ring = new PgpPublicKeyRing(
+					PgpUtilities.GetDecoderStream(fis));
+				PgpPublicKey key = ring.GetPublicKey();
+
+				// iterate through all direct key signautures and look for NotationData subpackets
+				foreach (PgpSignature sig in key.GetSignaturesOfType(PgpSignature.DirectKey))
+				{
+					Console.WriteLine("Signature date is: "
+						+ sig.GetHashedSubPackets().GetSignatureCreationTime());
+
+					NotationData[] data = sig.GetHashedSubPackets().GetNotationDataOccurences();
+
+					for (int i = 0; i < data.Length; i++)
+					{
+						Console.WriteLine("Found Notaion named '" + data[i].GetNotationName()
+							+"' with content '" + data[i].GetNotationValue() + "'.");
+					}
+				}
+
+				fis.Close();
+			}
+			else if (args.Length == 5)
+			{
+				Stream secFis = File.OpenRead(args[0]);
+				Stream pubFis = File.OpenRead(args[2]);
+
+				// gather command line arguments
+				PgpSecretKeyRing secRing = new PgpSecretKeyRing(
+					PgpUtilities.GetDecoderStream(secFis));
+				String secretKeyPass = args[1];
+				PgpPublicKeyRing ring = new PgpPublicKeyRing(
+					PgpUtilities.GetDecoderStream(pubFis));
+				String notationName = args[3];
+				String notationValue = args[4];
+
+				// create the signed keyRing
+				PgpPublicKeyRing sRing = null;
+				sRing = new PgpPublicKeyRing(
+					new MemoryStream(
+						SignPublicKey(secRing.GetSecretKey(), secretKeyPass,
+							ring.GetPublicKey(), notationName, notationValue, true),
+						false));
+				ring = sRing;
+
+				secFis.Close();
+				pubFis.Close();
+
+				Stream fos = File.Create("SignedKey.asc");
+
+				// write the created keyRing to file
+				ArmoredOutputStream aOut = new ArmoredOutputStream(fos);
+				sRing.Encode(aOut);
+				aOut.Close();
+
+				// Note: ArmoredOutputStream.Close() leaves underlying stream open
+				fos.Close();
+			}
+			else
+			{
+				Console.Error.WriteLine("usage: DirectKeySignature secretKeyFile secretKeyPass publicKeyFile(key to be signed) NotationName NotationValue");
+				Console.Error.WriteLine("or: DirectKeySignature signedPublicKeyFile");
+			}
+		}
+
+		private static byte[] SignPublicKey(
+			PgpSecretKey	secretKey,
+			string			secretKeyPass,
+			PgpPublicKey	keyToBeSigned,
+			string			notationName,
+			string			notationValue,
+			bool			armor)
+		{
+			Stream os = new MemoryStream();
+			if (armor)
+			{
+				os = new ArmoredOutputStream(os);
+			}
+
+			PgpPrivateKey pgpPrivKey = secretKey.ExtractPrivateKey(
+				secretKeyPass.ToCharArray());
+
+			PgpSignatureGenerator sGen = new PgpSignatureGenerator(
+				secretKey.PublicKey.Algorithm, HashAlgorithmTag.Sha1);
+
+			sGen.InitSign(PgpSignature.DirectKey, pgpPrivKey);
+
+			BcpgOutputStream bOut = new BcpgOutputStream(os);
+
+			sGen.GenerateOnePassVersion(false).Encode(bOut);
+
+			PgpSignatureSubpacketGenerator spGen = new PgpSignatureSubpacketGenerator();
+
+			bool isHumanReadable = true;
+
+			spGen.SetNotationData(true, isHumanReadable, notationName, notationValue);
+
+			PgpSignatureSubpacketVector packetVector = spGen.Generate();
+			sGen.SetHashedSubpackets(packetVector);
+
+			bOut.Flush();
+
+			if (armor)
+			{
+				os.Close();
+			}
+
+			return PgpPublicKey.AddCertification(keyToBeSigned, sGen.Generate()).GetEncoded();
+		}
+	}
+}