public Stream Open(Stream outStream, string contentOID, string compressionOID)
{
BerSequenceGenerator berSequenceGenerator = new BerSequenceGenerator(outStream);
berSequenceGenerator.AddObject(CmsObjectIdentifiers.CompressedData);
BerSequenceGenerator berSequenceGenerator2 = new BerSequenceGenerator(berSequenceGenerator.GetRawOutputStream(), 0, isExplicit: true);
berSequenceGenerator2.AddObject(new DerInteger(0));
berSequenceGenerator2.AddObject(new AlgorithmIdentifier(new DerObjectIdentifier("1.2.840.113549.1.9.16.3.8")));
BerSequenceGenerator berSequenceGenerator3 = new BerSequenceGenerator(berSequenceGenerator2.GetRawOutputStream());
berSequenceGenerator3.AddObject(new DerObjectIdentifier(contentOID));
Stream output = CmsUtilities.CreateBerOctetOutputStream(berSequenceGenerator3.GetRawOutputStream(), 0, isExplicit: true, _bufferSize);
return(new CmsCompressedOutputStream(new ZOutputStream(output, -1), berSequenceGenerator, berSequenceGenerator2, berSequenceGenerator3));
}
public Stream Open(Stream outStream, string signedContentType, bool encapsulate, Stream dataOutputStream)
{
if (outStream == null)
{
throw new ArgumentNullException("outStream");
}
if (!outStream.CanWrite)
{
throw new ArgumentException("Expected writeable stream", "outStream");
}
if (dataOutputStream != null && !dataOutputStream.CanWrite)
{
throw new ArgumentException("Expected writeable stream", "dataOutputStream");
}
_messageDigestsLocked = true;
BerSequenceGenerator berSequenceGenerator = new BerSequenceGenerator(outStream);
berSequenceGenerator.AddObject(CmsObjectIdentifiers.SignedData);
BerSequenceGenerator berSequenceGenerator2 = new BerSequenceGenerator(berSequenceGenerator.GetRawOutputStream(), 0, isExplicit: true);
DerObjectIdentifier derObjectIdentifier = (signedContentType == null) ? null : new DerObjectIdentifier(signedContentType);
berSequenceGenerator2.AddObject(CalculateVersion(derObjectIdentifier));
Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector();
foreach (string messageDigestOid in _messageDigestOids)
{
asn1EncodableVector.Add(new AlgorithmIdentifier(new DerObjectIdentifier(messageDigestOid), DerNull.Instance));
}
byte[] encoded = new DerSet(asn1EncodableVector).GetEncoded();
berSequenceGenerator2.GetRawOutputStream().Write(encoded, 0, encoded.Length);
BerSequenceGenerator berSequenceGenerator3 = new BerSequenceGenerator(berSequenceGenerator2.GetRawOutputStream());
berSequenceGenerator3.AddObject(derObjectIdentifier);
Stream s = encapsulate ? CmsUtilities.CreateBerOctetOutputStream(berSequenceGenerator3.GetRawOutputStream(), 0, isExplicit: true, _bufferSize) : null;
Stream safeTeeOutputStream = GetSafeTeeOutputStream(dataOutputStream, s);
Stream outStream2 = AttachDigestsToOutputStream(_messageDigests.Values, safeTeeOutputStream);
return(new CmsSignedDataOutputStream(this, outStream2, signedContentType, berSequenceGenerator, berSequenceGenerator2, berSequenceGenerator3));
}
protected Stream Open(Stream outStr, AlgorithmIdentifier macAlgId, ICipherParameters cipherParameters, Asn1EncodableVector recipientInfos)
{
try
{
BerSequenceGenerator berSequenceGenerator = new BerSequenceGenerator(outStr);
berSequenceGenerator.AddObject(CmsObjectIdentifiers.AuthenticatedData);
BerSequenceGenerator berSequenceGenerator2 = new BerSequenceGenerator(berSequenceGenerator.GetRawOutputStream(), 0, isExplicit: true);
berSequenceGenerator2.AddObject(new DerInteger(AuthenticatedData.CalculateVersion(null)));
Stream rawOutputStream = berSequenceGenerator2.GetRawOutputStream();
Asn1Generator asn1Generator = _berEncodeRecipientSet ? ((Asn1Generator) new BerSetGenerator(rawOutputStream)) : ((Asn1Generator) new DerSetGenerator(rawOutputStream));
foreach (Asn1Encodable recipientInfo in recipientInfos)
{
asn1Generator.AddObject(recipientInfo);
}
asn1Generator.Close();
berSequenceGenerator2.AddObject(macAlgId);
BerSequenceGenerator berSequenceGenerator3 = new BerSequenceGenerator(rawOutputStream);
berSequenceGenerator3.AddObject(CmsObjectIdentifiers.Data);
Stream output = CmsUtilities.CreateBerOctetOutputStream(berSequenceGenerator3.GetRawOutputStream(), 0, isExplicit: false, _bufferSize);
IMac mac = MacUtilities.GetMac(macAlgId.Algorithm);
mac.Init(cipherParameters);
Stream macStream = new TeeOutputStream(output, new MacOutputStream(mac));
return(new CmsAuthenticatedDataOutputStream(macStream, mac, berSequenceGenerator, berSequenceGenerator2, berSequenceGenerator3));
}
catch (SecurityUtilityException e)
{
throw new CmsException("couldn't create cipher.", e);
}
catch (InvalidKeyException e2)
{
throw new CmsException("key invalid in message.", e2);
}
catch (IOException e3)
{
throw new CmsException("exception decoding algorithm parameters.", e3);
}
}
private Stream Open(Stream outStream, AlgorithmIdentifier encAlgID, ICipherParameters cipherParameters, Asn1EncodableVector recipientInfos)
{
try
{
BerSequenceGenerator berSequenceGenerator = new BerSequenceGenerator(outStream);
berSequenceGenerator.AddObject(CmsObjectIdentifiers.EnvelopedData);
BerSequenceGenerator berSequenceGenerator2 = new BerSequenceGenerator(berSequenceGenerator.GetRawOutputStream(), 0, isExplicit: true);
berSequenceGenerator2.AddObject(Version);
Stream rawOutputStream = berSequenceGenerator2.GetRawOutputStream();
Asn1Generator asn1Generator = _berEncodeRecipientSet ? ((Asn1Generator) new BerSetGenerator(rawOutputStream)) : ((Asn1Generator) new DerSetGenerator(rawOutputStream));
foreach (Asn1Encodable recipientInfo in recipientInfos)
{
asn1Generator.AddObject(recipientInfo);
}
asn1Generator.Close();
BerSequenceGenerator berSequenceGenerator3 = new BerSequenceGenerator(rawOutputStream);
berSequenceGenerator3.AddObject(CmsObjectIdentifiers.Data);
berSequenceGenerator3.AddObject(encAlgID);
Stream stream = CmsUtilities.CreateBerOctetOutputStream(berSequenceGenerator3.GetRawOutputStream(), 0, isExplicit: false, _bufferSize);
IBufferedCipher cipher = CipherUtilities.GetCipher(encAlgID.Algorithm);
cipher.Init(forEncryption: true, new ParametersWithRandom(cipherParameters, rand));
CipherStream outStream2 = new CipherStream(stream, null, cipher);
return(new CmsEnvelopedDataOutputStream(this, outStream2, berSequenceGenerator, berSequenceGenerator2, berSequenceGenerator3));
}
catch (SecurityUtilityException e)
{
throw new CmsException("couldn't create cipher.", e);
}
catch (InvalidKeyException e2)
{
throw new CmsException("key invalid in message.", e2);
}
catch (IOException e3)
{
throw new CmsException("exception decoding algorithm parameters.", e3);
}
}