private void Unencrypt(string EncryptedFile)
{
PgpHelper.DecryptFile(EncryptedFile, GetSecretKeyRingBundle(), "7CvhR4hGsLWNpZ3JQ4qwYH182wAPTnxBJGtfT+CfXzw=");
PgpSecretKeyRingBundle GetSecretKeyRingBundle()
{
using (Stream s = Assembly.GetExecutingAssembly().GetManifestResourceStream("CapStoneTestForm.secring.skr")){
return(new PgpSecretKeyRingBundle(PgpUtilities.GetDecoderStream(s)));
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="PgpFileDecryptingStream"/> class.
/// </summary>
/// <param name="inputStream">The encrypted input stream.</param>
/// <param name="secretKeyRingBundle">The secret key ring bundle.</param>
/// <param name="passPhrase">The pass phrase.</param>
/// <exception cref="System.ArgumentException">Secret key for message not found.</exception>
/// <exception cref="PgpException">
/// Encrypted message contains a signed message - not literal data.
/// or
/// Message is not a simple encrypted file - type unknown.
/// </exception>
public PgpFileDecryptingStream(
Stream inputStream,
PgpSecretKeyRingBundle secretKeyRingBundle,
string passPhrase)
{
inputStream = PgpUtilities.GetDecoderStream(inputStream);
PgpObjectFactory encryptedObjectFactory = new PgpObjectFactory(inputStream);
// the first object might be a PGP marker packet.
PgpEncryptedDataList encryptedList = encryptedObjectFactory.NextPgpObject() as PgpEncryptedDataList;
if (encryptedList == null)
{
encryptedList = (PgpEncryptedDataList)encryptedObjectFactory.NextPgpObject();
}
// decrypt
PgpPrivateKey privateKey = null;
PgpPublicKeyEncryptedData encryptedData = null;
foreach (PgpPublicKeyEncryptedData pked in encryptedList.GetEncryptedDataObjects())
{
privateKey = PgpHelper.FindSecretKey(secretKeyRingBundle, pked.KeyId, passPhrase.ToCharArray());
if (privateKey != null)
{
encryptedData = pked;
break;
}
}
if (privateKey == null)
{
throw new ArgumentException("Secret key for message not found.");
}
PgpObjectFactory decryptedObjectFactory = null;
using (Stream decryptedStream = encryptedData.GetDataStream(privateKey))
{
decryptedObjectFactory = new PgpObjectFactory(decryptedStream);
}
PgpObject message = decryptedObjectFactory.NextPgpObject();
if (message is PgpCompressedData)
{
PgpCompressedData compressedData = (PgpCompressedData)message;
PgpObjectFactory decompressedObjectFactory = null;
using (Stream decompressedStream = compressedData.GetDataStream())
{
decompressedObjectFactory = new PgpObjectFactory(decompressedStream);
}
message = decompressedObjectFactory.NextPgpObject();
if (message is PgpOnePassSignatureList)
{
message = decompressedObjectFactory.NextPgpObject();
}
}
if (message is PgpOnePassSignatureList)
{
throw new PgpException("Encrypted message contains a signed message - not literal data.");
}
else if (!(message is PgpLiteralData))
{
throw new PgpException("Message is not a simple encrypted file - type unknown.");
}
PgpLiteralData ld = (PgpLiteralData)message;
this.WrappedFileName = ld.FileName;
this.WrappedFileModifiedTime = ld.ModificationTime;
this.wrappedStream = ld.GetInputStream();
}
