public CmsSignedDataParser(CmsTypedStream signedContent, Stream sigData)
: base(sigData)
{
//IL_0130: Expected O, but got Unknown
try
{
_signedContent = signedContent;
_signedData = SignedDataParser.GetInstance(contentInfo.GetContent(16));
_digests = Platform.CreateHashtable();
_digestOids = new HashSet();
Asn1SetParser digestAlgorithms = _signedData.GetDigestAlgorithms();
IAsn1Convertible asn1Convertible;
while ((asn1Convertible = digestAlgorithms.ReadObject()) != null)
{
AlgorithmIdentifier instance = AlgorithmIdentifier.GetInstance(asn1Convertible.ToAsn1Object());
try
{
string id = instance.Algorithm.Id;
string digestAlgName = Helper.GetDigestAlgName(id);
if (!_digests.Contains((object)digestAlgName))
{
_digests.set_Item((object)digestAlgName, (object)Helper.GetDigestInstance(digestAlgName));
_digestOids.Add(id);
}
}
catch (SecurityUtilityException)
{
}
}
ContentInfoParser encapContentInfo = _signedData.GetEncapContentInfo();
Asn1OctetStringParser asn1OctetStringParser = (Asn1OctetStringParser)encapContentInfo.GetContent(4);
if (asn1OctetStringParser != null)
{
CmsTypedStream cmsTypedStream = new CmsTypedStream(encapContentInfo.ContentType.Id, asn1OctetStringParser.GetOctetStream());
if (_signedContent == null)
{
_signedContent = cmsTypedStream;
}
else
{
cmsTypedStream.Drain();
}
}
_signedContentType = ((_signedContent == null) ? encapContentInfo.ContentType : new DerObjectIdentifier(_signedContent.ContentType));
}
catch (IOException val)
{
IOException val2 = val;
throw new CmsException("io exception: " + ((global::System.Exception)(object) val2).get_Message(), (global::System.Exception)(object) val2);
}
}
/**
* base constructor
*
* @param signedContent the content that was signed.
* @param sigData the signature object.
*/
public CmsSignedDataParser(
CmsTypedStream signedContent,
Stream sigData)
: base(sigData)
{
try
{
this._signedContent = signedContent;
this._signedData = SignedDataParser.GetInstance(this.contentInfo.GetContent(Asn1Tags.Sequence));
this._digests = Platform.CreateHashtable();
this._digestOids = new HashSet();
Asn1SetParser digAlgs = _signedData.GetDigestAlgorithms();
IAsn1Convertible o;
while ((o = digAlgs.ReadObject()) != null)
{
AlgorithmIdentifier id = AlgorithmIdentifier.GetInstance(o.ToAsn1Object());
try
{
string digestOid = id.ObjectID.Id;
string digestName = Helper.GetDigestAlgName(digestOid);
if (!this._digests.Contains(digestName))
{
this._digests[digestName] = Helper.GetDigestInstance(digestName);
this._digestOids.Add(digestOid);
}
}
catch (SecurityUtilityException)
{
// TODO Should do something other than ignore it
}
}
//
// If the message is simply a certificate chain message GetContent() may return null.
//
ContentInfoParser cont = _signedData.GetEncapContentInfo();
Asn1OctetStringParser octs = (Asn1OctetStringParser)
cont.GetContent(Asn1Tags.OctetString);
if (octs != null)
{
CmsTypedStream ctStr = new CmsTypedStream(
cont.ContentType.Id, octs.GetOctetStream());
if (_signedContent == null)
{
this._signedContent = ctStr;
}
else
{
//
// content passed in, need to read past empty encapsulated content info object if present
//
ctStr.Drain();
}
}
_signedContentType = _signedContent == null
? cont.ContentType
: new DerObjectIdentifier(_signedContent.ContentType);
}
catch (IOException e)
{
throw new CmsException("io exception: " + e.Message, e);
}
if (_digests.Count < 1)
{
throw new CmsException("no digests could be created for message.");
}
}
/**
* Replace the certificate and CRL information associated with this
* CMSSignedData object with the new one passed in.
* <p>
* The output stream is returned unclosed.
* </p>
* @param original the signed data stream to be used as a base.
* @param certsAndCrls the new certificates and CRLs to be used.
* @param out the stream to Write the new signed data object to.
* @return out.
* @exception CmsException if there is an error processing the CertStore
*/
public static Stream ReplaceCertificatesAndCrls(
Stream original,
IX509Store x509Certs,
IX509Store x509Crls,
IX509Store x509AttrCerts,
Stream outStr)
{
if (x509AttrCerts != null)
{
throw new NotImplementedException("Currently can't replace attribute certificates");
}
Asn1StreamParser inStr = new Asn1StreamParser(original, CmsUtilities.MaximumMemory);
ContentInfoParser contentInfo = new ContentInfoParser((Asn1SequenceParser)inStr.ReadObject());
SignedDataParser signedData = SignedDataParser.GetInstance(contentInfo.GetContent(Asn1Tags.Sequence));
BerSequenceGenerator sGen = new BerSequenceGenerator(outStr);
sGen.AddObject(CmsObjectIdentifiers.SignedData);
BerSequenceGenerator sigGen = new BerSequenceGenerator(sGen.GetRawOutputStream(), 0, true);
// version number
sigGen.AddObject(signedData.Version);
// digests
WriteToGenerator(sigGen, signedData.GetDigestAlgorithms().ToAsn1Object());
// encap content info
ContentInfoParser encapContentInfo = signedData.GetEncapContentInfo();
BerSequenceGenerator eiGen = new BerSequenceGenerator(sigGen.GetRawOutputStream());
eiGen.AddObject(encapContentInfo.ContentType);
Asn1OctetStringParser octs = (Asn1OctetStringParser)encapContentInfo.GetContent(Asn1Tags.OctetString);
if (octs != null)
{
BerOctetStringGenerator octGen = new BerOctetStringGenerator(eiGen.GetRawOutputStream(), 0, true);
byte[] inBuffer = new byte[4096];
byte[] outBuffer = new byte[4096];
Stream inOctets = octs.GetOctetStream();
Stream outOctets = octGen.GetOctetOutputStream(outBuffer);
int len;
while ((len = inOctets.Read(inBuffer, 0, inBuffer.Length)) > 0)
{
outOctets.Write(inBuffer, 0, len);
}
outOctets.Close();
}
eiGen.Close();
//
// skip existing certs and CRLs
//
Asn1SetParser set = signedData.GetCertificates();
if (set != null)
{
set.ToAsn1Object();
}
set = signedData.GetCrls();
if (set != null)
{
set.ToAsn1Object();
}
//
// replace the certs and crls in the SignedData object
//
Asn1Set certs;
try
{
certs = CmsUtilities.CreateDerSetFromList(
CmsUtilities.GetCertificatesFromStore(x509Certs));
}
catch (X509StoreException e)
{
throw new CmsException("error getting certs from certStore", e);
}
if (certs.Count > 0)
{
WriteToGenerator(sigGen, new DerTaggedObject(false, 0, certs));
}
Asn1Set crls;
try
{
crls = CmsUtilities.CreateDerSetFromList(
CmsUtilities.GetCrlsFromStore(x509Crls));
}
catch (X509StoreException e)
{
throw new CmsException("error getting crls from certStore", e);
}
if (crls.Count > 0)
{
WriteToGenerator(sigGen, new DerTaggedObject(false, 1, crls));
}
WriteToGenerator(sigGen, signedData.GetSignerInfos().ToAsn1Object());
sigGen.Close();
sGen.Close();
return(outStr);
}
/**
* base constructor
*
* @param signedContent the content that was signed.
* @param sigData the signature object.
*/
public CmsSignedDataParser(
CmsTypedStream signedContent,
Stream sigData)
: base(sigData)
{
try
{
this._signedContent = signedContent;
this._signedData = SignedDataParser.GetInstance(this.contentInfo.GetContent(Asn1Tags.Sequence));
this._digests = new Hashtable();
Asn1SetParser digAlgs = _signedData.GetDigestAlgorithms();
IAsn1Convertible o;
while ((o = digAlgs.ReadObject()) != null)
{
AlgorithmIdentifier id = AlgorithmIdentifier.GetInstance(o.ToAsn1Object());
try
{
string digestName = Helper.GetDigestAlgName(id.ObjectID.Id);
IDigest dig = DigestUtilities.GetDigest(digestName);
this._digests[digestName] = dig;
}
catch (SecurityUtilityException)
{
// ignore
}
}
if (_signedContent == null)
{
//
// If the message is simply a certificate chain message GetContent() may return null.
//
Asn1OctetStringParser octs = (Asn1OctetStringParser)
_signedData.GetEncapContentInfo().GetContent(Asn1Tags.OctetString);
if (octs != null)
{
this._signedContent = new CmsTypedStream(octs.GetOctetStream());
}
}
else
{
//
// content passed in, need to read past empty encapsulated content info object if present
//
Asn1OctetStringParser octs = (Asn1OctetStringParser)
_signedData.GetEncapContentInfo().GetContent(Asn1Tags.OctetString);
if (octs != null)
{
Stream inStream = octs.GetOctetStream();
while (inStream.ReadByte() >= 0)
{
// ignore
}
}
}
}
catch (IOException e)
{
throw new CmsException("io exception: " + e.Message, e);
}
if (_digests.Count < 1)
{
throw new CmsException("no digests could be created for message.");
}
}
/**
* Replace the signerinformation store associated with the passed
* in message contained in the stream original with the new one passed in.
* You would probably only want to do this if you wanted to change the unsigned
* attributes associated with a signer, or perhaps delete one.
* <p>
* The output stream is returned unclosed.
* </p>
* @param original the signed data stream to be used as a base.
* @param signerInformationStore the new signer information store to use.
* @param out the stream to Write the new signed data object to.
* @return out.
*/
public static Stream ReplaceSigners(
Stream original,
SignerInformationStore signerInformationStore,
Stream outStr)
{
Asn1StreamParser inStr = new Asn1StreamParser(original, CmsUtilities.MaximumMemory);
ContentInfoParser contentInfo = new ContentInfoParser((Asn1SequenceParser)inStr.ReadObject());
SignedDataParser signedData = SignedDataParser.GetInstance(contentInfo.GetContent(Asn1Tags.Sequence));
BerSequenceGenerator sGen = new BerSequenceGenerator(outStr);
sGen.AddObject(CmsObjectIdentifiers.SignedData);
BerSequenceGenerator sigGen = new BerSequenceGenerator(sGen.GetRawOutputStream(), 0, true);
// version number
sigGen.AddObject(signedData.Version);
// digests
signedData.GetDigestAlgorithms().ToAsn1Object(); // skip old ones
Asn1EncodableVector digestAlgs = new Asn1EncodableVector();
foreach (SignerInformation signer in signerInformationStore.GetSigners())
{
digestAlgs.Add(FixAlgID(signer.DigestAlgorithmID));
}
WriteToGenerator(sigGen, new DerSet(digestAlgs));
// encap content info
ContentInfoParser encapContentInfo = signedData.GetEncapContentInfo();
BerSequenceGenerator eiGen = new BerSequenceGenerator(sigGen.GetRawOutputStream());
eiGen.AddObject(encapContentInfo.ContentType);
Asn1OctetStringParser octs = (Asn1OctetStringParser)encapContentInfo.GetContent(Asn1Tags.OctetString);
if (octs != null)
{
BerOctetStringGenerator octGen = new BerOctetStringGenerator(
eiGen.GetRawOutputStream(), 0, true);
byte[] inBuffer = new byte[4096];
byte[] outBuffer = new byte[4096];
Stream inOctets = octs.GetOctetStream();
Stream outOctets = octGen.GetOctetOutputStream(outBuffer);
int len;
while ((len = inOctets.Read(inBuffer, 0, inBuffer.Length)) > 0)
{
outOctets.Write(inBuffer, 0, len);
}
outOctets.Close();
}
eiGen.Close();
{
Asn1SetParser set = signedData.GetCertificates();
if (set != null)
{
Asn1Object setObj = set.ToAsn1Object();
Asn1TaggedObject taggedObj = (set is BerSetParser)
? new BerTaggedObject(false, 0, setObj)
: new DerTaggedObject(false, 0, setObj);
WriteToGenerator(sigGen, taggedObj);
}
}
{
Asn1SetParser set = signedData.GetCrls();
if (set != null)
{
Asn1Object setObj = set.ToAsn1Object();
Asn1TaggedObject taggedObj = (set is BerSetParser)
? new BerTaggedObject(false, 1, setObj)
: new DerTaggedObject(false, 1, setObj);
WriteToGenerator(sigGen, taggedObj);
}
}
Asn1EncodableVector signerInfos = new Asn1EncodableVector();
foreach (SignerInformation signer in signerInformationStore.GetSigners())
{
signerInfos.Add(signer.ToSignerInfo());
}
WriteToGenerator(sigGen, new DerSet(signerInfos));
sigGen.Close();
sGen.Close();
return(outStr);
}