public string SignText(string strMessage, ulong lSignatureKeyID, string strPassphrase)
{
SignaturePacket spSign = new SignaturePacket();
strMessage = Radix64.TrimMessage(strMessage);
TransportableSecretKey tskKey = skrKeyRing.Find(lSignatureKeyID);
SecretKeyPacket skpKey = tskKey.FindKey(AsymActions.Sign);
spSign.HashAlgorithm = HashAlgorithms.SHA1;
spSign.Format = PacketFormats.New;
spSign.KeyID = skpKey.PublicKey.KeyID;
spSign.TimeCreated = DateTime.Now;
spSign.SignatureAlgorithm = skpKey.PublicKey.Algorithm;
spSign.SignatureType = SignatureTypes.TextSignature;
spSign.Version = SignaturePacketVersionNumbers.v4;
byte[] bMessage = System.Text.Encoding.UTF8.GetBytes(strMessage);
spSign.Sign(bMessage, skpKey, strPassphrase);
byte[] bSignature = spSign.Generate();
string strSignature = Radix64.Encode(bSignature, true);
string strFinal = Armor.WrapCleartextSignature(strMessage, strSignature);
return(strFinal);
}
public static string ClearTextSign(string strMessage, SecretKeyRing skrKeyRing)
{
SignaturePacket spSign = new SignaturePacket();
strMessage = Radix64.TrimMessage(strMessage);
QueryPassphrase qpPassphrase = new QueryPassphrase();
qpPassphrase.ShowMyDialog(skrKeyRing);
string strPassphrase = qpPassphrase.Passphrase;
TransportableSecretKey tskKey = qpPassphrase.SelectedKey;
SecretKeyPacket skpKey = tskKey.FindKey(AsymActions.Sign);
Working wWorking = new Working();
wWorking.Show();
spSign.HashAlgorithm = HashAlgorithms.SHA1;
spSign.Format = PacketFormats.New;
wWorking.Progress(10);
SignatureSubPacket sspCreator = new SignatureSubPacket();
sspCreator.Type = SignatureSubPacketTypes.IssuerKeyID;
sspCreator.KeyID = skpKey.PublicKey.KeyID;
SignatureSubPacket sspCreationTime = new SignatureSubPacket();
sspCreationTime.Type = SignatureSubPacketTypes.SignatureCreationTime;
sspCreationTime.TimeCreated = DateTime.Now;
spSign.HashedSubPackets = new SignatureSubPacket[2];
spSign.HashedSubPackets[0] = sspCreator;
spSign.HashedSubPackets[1] = sspCreationTime;
wWorking.Progress(20);
//spSign.KeyID = skpKey.PublicKey.KeyID;
//spSign.TimeCreated = DateTime.Now;
spSign.SignatureAlgorithm = skpKey.PublicKey.Algorithm;
spSign.SignatureType = SignatureTypes.TextSignature;
spSign.Version = SignaturePacketVersionNumbers.v4;
wWorking.Progress(10);
byte[] bMessage = System.Text.Encoding.UTF8.GetBytes(strMessage);
spSign.Sign(bMessage, skpKey, strPassphrase);
wWorking.Progress(40);
byte[] bSignature = spSign.Generate();
string strSignature = Radix64.Encode(bSignature, true);
wWorking.Progress(20);
string strFinal = Armor.WrapCleartextSignature(strMessage, strSignature);
wWorking.Hide();
return(strFinal);
}
public string DecryptAndVerify(string strMessage, string strPassphrase)
{
ArmorTypes atType = new ArmorTypes();
string strRest = "";
string strRadix64 = Armor.RemoveArmor(strMessage, ref atType, ref strRest);
if (strRadix64.Length == 0)
{
throw new Exception("This is not a valid OpenPGP message!");
}
return(this.DecryptAndVerifyData(Radix64.Decode(strRadix64), strPassphrase));
}
public static TransportableSecretKey[] SplitKeys(string strRadix64)
{
ArrayList alKeys = new ArrayList();
Packet[] pPackets = Packet.ParsePackets(strRadix64);
byte[] bOneKey = new byte[0];
for (int i = 0; i < pPackets.Length; i++)
{
if (pPackets[i] is PublicKeyPacket)
{
SecretKeyPacket skpKey = (SecretKeyPacket)pPackets[i];
if ((skpKey.Content == ContentTypes.SecretKey) && (bOneKey.Length > 10))
{
TransportableSecretKey tskKey = new TransportableSecretKey(Radix64.Encode(bOneKey, true));
alKeys.Add(tskKey);
bOneKey = new byte[0];
}
}
byte[] bPacket = pPackets[i].Generate();
byte[] bTmpKey = new byte[bOneKey.Length];
bOneKey.CopyTo(bTmpKey, 0);
bOneKey = new byte[bOneKey.Length + bPacket.Length];
Array.Copy(bTmpKey, 0, bOneKey, 0, bTmpKey.Length);
Array.Copy(bPacket, 0, bOneKey, bTmpKey.Length, bPacket.Length);
}
if (bOneKey.Length > 10)
{
TransportableSecretKey tskKey = new TransportableSecretKey(Radix64.Encode(bOneKey, true));
alKeys.Add(tskKey);
}
TransportableSecretKey[] tskKeys = new TransportableSecretKey[alKeys.Count];
int iCount = 0;
IEnumerator ieKeys = alKeys.GetEnumerator();
while (ieKeys.MoveNext())
{
if (!(ieKeys.Current is TransportableSecretKey))
{
continue;
}
tskKeys[iCount++] = (TransportableSecretKey)ieKeys.Current;
}
return(tskKeys);
}
public string EncryptText(string strMessage, ulong[] lTargetKeyIDs)
{
LiteralMessage lmMessage = new LiteralMessage(DataFormatTypes.Text);
lmMessage.Text = strMessage;
lmMessage.TimeCreated = DateTime.Now;
lmMessage.Filename = "";
byte[] bReturn = EncryptMessage(lmMessage, lTargetKeyIDs);
string strReturn = Radix64.Encode(bReturn, true);
strReturn = Armor.WrapMessage(strReturn);
return(strReturn);
}
void cmdDecode_Click(Object sender, System.EventArgs e)
{
byte[] bPlaintext = Radix64.Decode(txtRadix64.Text);
string strOutput = "";
for (int i = 0; i < bPlaintext.Length; i++)
{
strOutput += bPlaintext[i].ToString() + ":";
}
this.txtPlaintext.Text = strOutput;
PublicKeyRing pkpRing = new PublicKeyRing();
pkpRing.Load("C:\\keyring.txt");
pkpRing.Save("C:\\keyringout.txt");
}
public string EncryptAndSignText(string strMessage, ulong[] lTargetKeyIDs, ulong lSignatureKeyID, string strPassphrase)
{
LiteralMessage lmMessage = new LiteralMessage(DataFormatTypes.Text);
lmMessage.Text = strMessage;
lmMessage.TimeCreated = DateTime.Now;
lmMessage.Filename = "";
SignedMessage smMessage = this.SignMessage(lmMessage, lSignatureKeyID, strPassphrase);
byte[] bReturn = EncryptMessage(smMessage, lTargetKeyIDs);
string strReturn = Radix64.Encode(bReturn, true);
strReturn = Armor.WrapMessage(strReturn);
return(strReturn);
}
private static void DecryptAndVerify(SecretKeyRing skrSecretKeyRing, PublicKeyRing pkrPublicKeyRing, byte[] bData)
{
string strMessage = System.Text.Encoding.UTF8.GetString(bData);
ArmorTypes atType = new ArmorTypes();
string strRest = "";
string strRadix64 = Armor.RemoveArmor(strMessage, ref atType, ref strRest);
if (strRadix64.Length > 0)
{
bData = Radix64.Decode(strRadix64);
}
SharpPrivacy.OpenPGP.Messages.Message mContent = null;
if (atType == ArmorTypes.OpenPGPSignature)
{
string strSignature = "";
string strSignedMessage = Armor.RemoveClearSignatureArmor(strMessage, ref atType, ref strSignature);
strSignedMessage = Radix64.DashUnescape(strSignedMessage);
strSignedMessage = Radix64.TrimMessage(strSignedMessage);
SignedMessage smMessage = new SignedMessage();
Packet[] pPackets = Packet.ParsePackets(strSignature);
if (!(pPackets[0] is SignaturePacket))
{
MessageBox.Show("Not a valid cleartext signature!");
return;
}
smMessage.Signature = (SignaturePacket)pPackets[0];
LiteralMessage lmMessage = new LiteralMessage(DataFormatTypes.Text);
lmMessage.Text = strSignedMessage;
smMessage.MessageSigned = lmMessage;
mContent = smMessage;
}
else
{
// let us see what kind of message this is
EncryptedMessage emMessage = new EncryptedMessage();
try {
Packet[] pPackets = Packet.ParsePackets(bData);
emMessage.ParseMessage(pPackets);
if (emMessage.SymmetricallyEncrypted)
{
// Query passphrase for symmetrically encrypted message
QueryPassphrase qpPassphrase = new QueryPassphrase();
qpPassphrase.ShowMyDialog();
string strPassphrase = qpPassphrase.Passphrase;
mContent = emMessage.Decrypt(strPassphrase);
}
else
{
ulong lKeyID = emMessage.GetFittingKeyID(skrSecretKeyRing);
QueryPassphrase qpPassphrase = new QueryPassphrase();
qpPassphrase.ShowMyDialog(skrSecretKeyRing.Find(lKeyID));
string strPassphrase = qpPassphrase.Passphrase;
mContent = emMessage.Decrypt(skrSecretKeyRing, strPassphrase);
}
while ((!(mContent is LiteralMessage)) && (!(mContent is SignedMessage)))
{
if (mContent is CompressedMessage)
{
mContent = ((CompressedMessage)mContent).Uncompress();
}
else
{
MessageBox.Show("This is not a valid OpenPGP message!");
return;
}
}
} catch (Exception ee) {
MessageBox.Show("There was an error decrypting your message: " + ee.Message);
return;
}
}
LiteralMessage lmContent = new LiteralMessage();
string strDisplay = "";
if (mContent is SignedMessage)
{
SignedMessage smContent = (SignedMessage)mContent;
lmContent = smContent.MessageSigned;
strDisplay += "*** OpenPGP Signed Message ***\r\n";
strDisplay += "*** Signature Status: " + smContent.Verify(pkrPublicKeyRing) + " ***\r\n";
strDisplay += "*** Signing Key: " + smContent.Signature.KeyID.ToString("x") + " ***\r\n";
strDisplay += "*** Signing Date: " + smContent.Signature.TimeCreated.ToString() + "***\r\n\r\n";
}
else if (mContent is LiteralMessage)
{
lmContent = (LiteralMessage)mContent;
strDisplay += "*** OpenPGP Encrypted Message ***\r\n\r\n";
}
else
{
MessageBox.Show("An error occured: Could not find an encrypted or signed message!", "Error...");
return;
}
if (lmContent.DataFormat == DataFormatTypes.Text)
{
strDisplay += lmContent.Text;
strDisplay += "\r\n\r\n*** End OpenPGP Message ***\r\n";
PlaintextViewer pvViewer = new PlaintextViewer();
pvViewer.MessageText = strDisplay;
pvViewer.Show();
}
else
{
if (MessageBox.Show(strDisplay, "Signature Status...", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk, MessageBoxDefaultButton.Button1) == DialogResult.OK)
{
System.Windows.Forms.SaveFileDialog sfdSave = new SaveFileDialog();
sfdSave.OverwritePrompt = true;
sfdSave.Filter = "All Files (*.*)|*.*";
sfdSave.FileName = lmContent.Filename;
sfdSave.ShowDialog();
if (sfdSave.FileName.Length > 0)
{
System.IO.FileStream fsOut = new FileStream(sfdSave.FileName, FileMode.CreateNew);
System.IO.BinaryWriter bwOut = new BinaryWriter(fsOut);
bwOut.Write(lmContent.Binary);
bwOut.Close();
fsOut.Close();
}
}
}
}
public static string EncryptText(string strMessage, PublicKeyRing pkrPublicKeyRing, SecretKeyRing skrSecretKeyRing, bool bSign)
{
PublicKeySelector pksSelectKeys = new PublicKeySelector(pkrPublicKeyRing);
pksSelectKeys.ShowDialog();
TransportableSecretKey tskKey = new TransportableSecretKey();
string strPassphrase = "";
if (bSign)
{
QueryPassphrase qpPassphrase = new QueryPassphrase();
qpPassphrase.ShowMyDialog(skrSecretKeyRing);
tskKey = qpPassphrase.SelectedKey;
strPassphrase = qpPassphrase.Passphrase;
}
if (pksSelectKeys.SelectedKeys.Count == 0)
{
return(strMessage);
}
Working wWorking = new Working();
wWorking.Show();
LiteralMessage lmMessage = new LiteralMessage(DataFormatTypes.Text);
lmMessage.Text = strMessage;
lmMessage.TimeCreated = DateTime.Now;
lmMessage.Filename = "";
SharpPrivacy.OpenPGP.Messages.Message mEncryptionMessage = lmMessage;
if (bSign)
{
SignedMessage smMessage = new SignedMessage();
smMessage.MessageSigned = lmMessage;
SignaturePacket spPacket = new SignaturePacket();
spPacket.Version = SignaturePacketVersionNumbers.v3;
SecretKeyPacket skpKey = tskKey.FindKey(AsymActions.Sign);
spPacket.KeyID = skpKey.PublicKey.KeyID;
spPacket.HashAlgorithm = HashAlgorithms.SHA1;
spPacket.SignatureAlgorithm = skpKey.PublicKey.Algorithm;
spPacket.TimeCreated = DateTime.Now;
spPacket.SignatureType = SignatureTypes.TextSignature;
spPacket.Sign(lmMessage.Binary, skpKey, strPassphrase);
smMessage.Signature = spPacket;
mEncryptionMessage = smMessage;
}
CompressedMessage cmMessage = new CompressedMessage();
cmMessage.Compress(mEncryptionMessage);
wWorking.Progress(20);
SymAlgorithms saAlgo = GetSymAlgorithmPreferences(pksSelectKeys.SelectedKeys);
SymmetricallyEncryptedDataPacket sedpEncrypted = new SymmetricallyEncryptedDataPacket();
SymmetricAlgorithm saEncrypt = CipherHelper.CreateSymAlgorithm(saAlgo);
saEncrypt.Mode = CipherMode.OpenPGP_CFB;
saEncrypt.GenerateKey();
byte[] bKey = saEncrypt.Key;
wWorking.Progress(10);
ESKSequence esksKeys = new ESKSequence();
try {
esksKeys = CreateESKSequence(pksSelectKeys.SelectedKeys, AsymActions.Encrypt, saAlgo, bKey);
} catch (Exception e) {
wWorking.Hide();
MessageBox.Show("The following error occured: " + e.Message, "Error...");
return(strMessage);
}
wWorking.Progress(50);
ICryptoTransform ictEncryptor = saEncrypt.CreateEncryptor();
byte[] bMessage = cmMessage.GetEncoded();
byte[] bOutput = new byte[bMessage.Length];
ictEncryptor.TransformBlock(bMessage, 0, bMessage.Length, ref bOutput, 0);
bKey.Initialize();
wWorking.Progress(10);
int iOutLength = (saEncrypt.BlockSize >> 3) + 2 + bMessage.Length;
sedpEncrypted.Body = new byte[iOutLength];
Array.Copy(bOutput, 0, sedpEncrypted.Body, 0, iOutLength);
byte[] bESK = esksKeys.GetEncoded();
byte[] bEncrypted = sedpEncrypted.Generate();
byte[] bReturn = new byte[bESK.Length + bEncrypted.Length];
bESK.CopyTo(bReturn, 0);
bEncrypted.CopyTo(bReturn, bESK.Length);
wWorking.Progress(10);
string strReturn = Radix64.Encode(bReturn, true);
strReturn = Armor.WrapMessage(strReturn);
wWorking.Hide();
return(strReturn);
}
