/**
* base constructor
*
* @param signedContent the content that was signed.
* @param sigData the signature object.
*/
public CmsSignedDataParser(CmsTypedStream signedContent, Stream sigData) : base(sigData)
{
try
{
_signedContent = signedContent;
_signedData = SignedDataParser.GetInstance(contentInfo.GetContent(Asn1Tags.Sequence));
_digests = Platform.CreateHashtable();
_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 (!_digests.Contains(digestName))
{
_digests[digestName] = Helper.GetDigestInstance(digestName);
_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();
var octs = (Asn1OctetStringParser)cont.GetContent(Asn1Tags.OctetString);
if (octs != null)
{
var ctStr = new CmsTypedStream(cont.ContentType.Id, octs.GetOctetStream());
if (_signedContent == null)
{
_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.");
}
}
/**
* base constructor
*
* @param signedContent the content that was signed.
* @param sigData the signature object.
*/
public CmsSignedDataParser(CmsTypedStream signedContent, Stream sigData) : base(sigData)
{
try
{
_signedContent = signedContent;
_signedData = SignedDataParser.GetInstance(contentInfo.GetContent(Asn1Tags.Sequence));
_digests = Platform.CreateHashtable();
_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 (!_digests.Contains(digestName))
{
_digests[digestName] = Helper.GetDigestInstance(digestName);
_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();
var octs = (Asn1OctetStringParser) cont.GetContent(Asn1Tags.OctetString);
if (octs != null)
{
var ctStr = new CmsTypedStream(cont.ContentType.Id, octs.GetOctetStream());
if (_signedContent == null)
{
_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.");
}
}
