public static byte[] Decrypt(string encryptedText, RetrievePgpKeys keys)
{
AlgorithmAgreement m_algorithmsAgreed = new AlgorithmAgreement(keys.PublicKeys);
byte[] encryptedBytes = Encoding.UTF8.GetBytes(encryptedText);
return(Decrypt(encryptedBytes, keys, m_algorithmsAgreed));
}
public PgpEncryptFile(RetrievePgpKeys keys)
{
if (keys == null)
{
throw new ArgumentNullException("keys");
}
m_encryptionKeys = keys;
m_algorithmsAgreed = new AlgorithmAgreement(keys.PublicKeys);
}
public static void AddSignature(PgpPublicKey key, KeyStoreDB keyDb, string keyExportName, PgpSecretKey secKey, char[] passPhrase,
SignatureOperation op, DateTime expiryDate, PgpSignature certLevel = null, string userId = "")
{
string fileData = string.Empty;
bool useTemp = true;
if (key == null)
{
throw new ArgumentNullException("key");
}
if (keyDb == null)
{
throw new ArgumentNullException("keyDb");
}
if (!Enum.IsDefined(typeof(SignatureOperation), op))
{
throw new ArgumentOutOfRangeException(string.Format("op: {0}", op));
}
AlgorithmAgreement algorithms = new AlgorithmAgreement(new List <PgpPublicKey>()
{
key
});
PgpPrivateKey privateKey = secKey.ExtractPrivateKey(passPhrase);
PgpSignatureGenerator sigGen = new PgpSignatureGenerator(key.Algorithm, algorithms.AgreedHashAlgorithm);
switch (op)
{
case SignatureOperation.AddUserId:
break;
case SignatureOperation.RevokeKey:
MemoryStream mStream = new MemoryStream();
using (ArmoredOutputStream outArmour = new ArmoredOutputStream(mStream)) {
outArmour.SetHeader("Version", "Lynx Privacy");
sigGen.InitSign(PgpSignature.KeyRevocation, privateKey);
PgpSignature sig = sigGen.GenerateCertification(secKey.PublicKey);
PgpPublicKey.AddCertification(secKey.PublicKey, sig);
sig.InitVerify(secKey.PublicKey);
if (!sig.VerifyCertification(secKey.PublicKey))
{
throw new PgpException("revocation verification failed.");
}
sig.Encode(outArmour);
outArmour.Close();
}
mStream.Position = 0;
StreamReader srdr = new StreamReader(mStream);
string armour = srdr.ReadToEnd();
string outstr = armour.Replace("BEGIN PGP SIGNATURE", "BEGIN PGP PUBLIC KEY BLOCK")
.Replace("END PGP SIGNATURE", "END PGP PUBLIC KEY BLOCK");
mStream.Close();
if (string.IsNullOrEmpty(keyExportName))
{
useTemp = true;
string tempPath = Path.GetTempPath();
keyExportName = Path.Combine(tempPath, Guid.NewGuid().ToString() + ".tmppgp");
}
File.WriteAllText(keyExportName, outstr);
keyExportName = "";
//Debug.Assert(secKey.PublicKey.IsRevoked() == true);
break;
case SignatureOperation.SetKeyExpiry:
break;
case SignatureOperation.CertifyKey:
break;
default:
break;
}
if (secKey.PublicKey != null)
{
if (string.IsNullOrEmpty(keyExportName))
{
useTemp = true;
string tempPath = Path.GetTempPath();
keyExportName = Path.Combine(tempPath, Guid.NewGuid().ToString() + ".tmppgp");
}
ExportKey expKey = new ExportKey(keyDb);
expKey.UpdateDbSecretKey(secKey, keyExportName);
if (useTemp)
{
//File.Delete(keyExportName);
}
}
}
public static byte[] Decrypt(byte[] encryptedData, RetrievePgpKeys keys, AlgorithmAgreement agreed)
{
Stream inputStream = new MemoryStream(encryptedData);
inputStream = PgpUtilities.GetDecoderStream(inputStream);
PgpObjectFactory pgpObjFactory = new PgpObjectFactory(inputStream);
PgpEncryptedDataList enc;
PgpObject pgpObj = pgpObjFactory.NextPgpObject();
if (pgpObj is PgpEncryptedDataList)
{
enc = (PgpEncryptedDataList)pgpObj;
}
else
{
enc = (PgpEncryptedDataList)pgpObjFactory.NextPgpObject();
}
PgpPrivateKey privKey = keys.PrivateKey;
PgpPublicKeyEncryptedData pbe = null;
foreach (PgpPublicKeyEncryptedData pked in enc.GetEncryptedDataObjects())
{
if (privKey != null)
{
pbe = pked;
break;
}
}
PgpOnePassSignatureList onePassSigList = null;
PgpSignatureList signatureList = null;
PgpLiteralData literalData = null;
byte[] returnBytes = null;
Stream clear = pbe.GetDataStream(privKey);
PgpObjectFactory plainFactory = new PgpObjectFactory(clear);
for (; ;)
{
PgpObject message = plainFactory.NextPgpObject();
if (message == null)
{
break;
}
if (message is PgpCompressedData)
{
PgpCompressedData compressedData = (PgpCompressedData)message;
plainFactory = new PgpObjectFactory(compressedData.GetDataStream());
}
else if (message is PgpLiteralData)
{
literalData = (PgpLiteralData)message;
Stream unc = literalData.GetInputStream();
returnBytes = Org.BouncyCastle.Utilities.IO.Streams.ReadAll(unc);
unc.Close();
}
else if (message is PgpOnePassSignatureList)
{
onePassSigList = (PgpOnePassSignatureList)message;
}
else if (message is PgpSignatureList)
{
signatureList = (PgpSignatureList)message;
}
else if (message is PgpMarker)
{
}
else
{
throw new PgpException("message contains unknown message type.");
}
}
//Stream unc = literalData.GetInputStream();
//byte[] returnBytes = Org.BouncyCastle.Utilities.IO.Streams.ReadAll(unc);
if ((onePassSigList != null) && (signatureList != null))
{
VerifySignature(onePassSigList, signatureList, keys.SecretKey.PublicKey, returnBytes);
}
//unc.Close();
clear.Close();
inputStream.Close();
return(returnBytes);
}
public static byte[] Decrypt2(byte[] encryptedData, RetrievePgpKeys keys, AlgorithmAgreement agreed)
{
Stream inputStream = new MemoryStream(encryptedData);
inputStream = PgpUtilities.GetDecoderStream(inputStream);
PgpObjectFactory pgpObjFactory = new PgpObjectFactory(inputStream);
PgpEncryptedDataList enc;
PgpObject pgpObj = pgpObjFactory.NextPgpObject();
if (pgpObj is PgpEncryptedDataList)
{
enc = (PgpEncryptedDataList)pgpObj;
}
else
{
enc = (PgpEncryptedDataList)pgpObjFactory.NextPgpObject();
}
PgpPrivateKey privKey = keys.PrivateKey;
PgpPublicKeyEncryptedData pbe = null;
foreach (PgpPublicKeyEncryptedData pked in enc.GetEncryptedDataObjects())
{
if (privKey != null)
{
pbe = pked;
break;
}
}
PgpOnePassSignatureList onePassSigList = null;
PgpSignatureList signatureList = null;
PgpLiteralData literalData = null;
Stream clear = pbe.GetDataStream(privKey);
PgpObjectFactory plainFactory = new PgpObjectFactory(clear);
PgpObject message = plainFactory.NextPgpObject();
if (message is PgpCompressedData)
{
PgpCompressedData compressedData = (PgpCompressedData)message;
Stream compDataIn = compressedData.GetDataStream();
PgpObjectFactory objectFactory = new PgpObjectFactory(compDataIn);
message = objectFactory.NextPgpObject();
if (message is PgpOnePassSignatureList)
{
onePassSigList = (message as PgpOnePassSignatureList);
message = objectFactory.NextPgpObject();
if (message is PgpLiteralData)
{
literalData = (PgpLiteralData)message;
}
message = objectFactory.NextPgpObject();
if (message is PgpSignatureList)
{
signatureList = (PgpSignatureList)message;
}
}
compDataIn.Close();
}
else
{
if (message is PgpOnePassSignatureList)
{
onePassSigList = (message as PgpOnePassSignatureList);
}
message = plainFactory.NextPgpObject();
if (message is PgpLiteralData)
{
literalData = (PgpLiteralData)message;
}
message = plainFactory.NextPgpObject();
if (message is PgpSignatureList)
{
signatureList = (PgpSignatureList)message;
}
}
Stream unc = literalData.GetInputStream();
byte[] returnBytes = Org.BouncyCastle.Utilities.IO.Streams.ReadAll(unc);
if (onePassSigList != null && signatureList != null)
{
VerifySignature(onePassSigList, signatureList, keys.SecretKey.PublicKey, returnBytes);
}
unc.Close();
clear.Close();
inputStream.Close();
return(returnBytes);
}
