private void ParseEnveloped(
byte[] data)
{
Asn1StreamParser aIn = new Asn1StreamParser(data);
ContentInfoParser cP = new ContentInfoParser((Asn1SequenceParser)aIn.ReadObject());
EnvelopedDataParser eP = new EnvelopedDataParser((Asn1SequenceParser)cP.GetContent(Asn1Tags.Sequence));
eP.GetRecipientInfos().ToAsn1Object(); // Must drain the parser!
EncryptedContentInfoParser ecP = eP.GetEncryptedContentInfo();
Asn1OctetStringParser content = (Asn1OctetStringParser)ecP.GetEncryptedContent(Asn1Tags.OctetString);
Streams.Drain(content.GetOctetStream());
}
private ITestResult EnvelopedTest()
{
try
{
// Key trans
ContentInfo info = ContentInfo.GetInstance(
Asn1Object.FromByteArray(envDataKeyTrns));
EnvelopedData envData = EnvelopedData.GetInstance(info.Content);
Asn1Set s = envData.RecipientInfos;
if (s.Count != 1)
{
return(new SimpleTestResult(false, Name + ": CMS KeyTrans enveloped, wrong number of recipients"));
}
RecipientInfo recip = RecipientInfo.GetInstance(s[0]);
if (recip.Info is KeyTransRecipientInfo)
{
KeyTransRecipientInfo inf = KeyTransRecipientInfo.GetInstance(recip.Info);
inf = new KeyTransRecipientInfo(inf.RecipientIdentifier, inf.KeyEncryptionAlgorithm, inf.EncryptedKey);
s = new DerSet(new RecipientInfo(inf));
}
else
{
return(new SimpleTestResult(false, Name + ": CMS KeyTrans enveloped, wrong recipient type"));
}
envData = new EnvelopedData(envData.OriginatorInfo, s, envData.EncryptedContentInfo, envData.UnprotectedAttrs);
info = new ContentInfo(CmsObjectIdentifiers.EnvelopedData, envData);
if (!Arrays.AreEqual(info.GetEncoded(), envDataKeyTrns))
{
return(new SimpleTestResult(false, Name + ": CMS KeyTrans enveloped failed to re-encode"));
}
// KEK
info = ContentInfo.GetInstance(
Asn1Object.FromByteArray(envDataKEK));
envData = EnvelopedData.GetInstance(info.Content);
s = envData.RecipientInfos;
if (s.Count != 1)
{
return(new SimpleTestResult(false, Name + ": CMS KEK enveloped, wrong number of recipients"));
}
recip = RecipientInfo.GetInstance(s[0]);
if (recip.Info is KekRecipientInfo)
{
KekRecipientInfo inf = KekRecipientInfo.GetInstance(recip.Info);
inf = new KekRecipientInfo(inf.KekID, inf.KeyEncryptionAlgorithm, inf.EncryptedKey);
s = new DerSet(new RecipientInfo(inf));
}
else
{
return(new SimpleTestResult(false, Name + ": CMS KEK enveloped, wrong recipient type"));
}
envData = new EnvelopedData(envData.OriginatorInfo, s, envData.EncryptedContentInfo, envData.UnprotectedAttrs);
info = new ContentInfo(CmsObjectIdentifiers.EnvelopedData, envData);
if (!Arrays.AreEqual(info.GetEncoded(), envDataKEK))
{
return(new SimpleTestResult(false, Name + ": CMS KEK enveloped failed to re-encode"));
}
// Nested NDEF problem
Asn1StreamParser asn1In = new Asn1StreamParser(new MemoryStream(envDataNestedNDEF, false));
ContentInfoParser ci = new ContentInfoParser((Asn1SequenceParser)asn1In.ReadObject());
EnvelopedDataParser ed = new EnvelopedDataParser((Asn1SequenceParser)ci
.GetContent(Asn1Tags.Sequence));
Touch(ed.Version);
ed.GetOriginatorInfo();
ed.GetRecipientInfos().ToAsn1Object();
EncryptedContentInfoParser eci = ed.GetEncryptedContentInfo();
Touch(eci.ContentType);
Touch(eci.ContentEncryptionAlgorithm);
Stream dataIn = ((Asn1OctetStringParser)eci.GetEncryptedContent(Asn1Tags.OctetString))
.GetOctetStream();
Streams.Drain(dataIn);
dataIn.Close();
// Test data doesn't have unprotected attrs, bug was being thrown by this call
Asn1SetParser upa = ed.GetUnprotectedAttrs();
if (upa != null)
{
upa.ToAsn1Object();
}
return(new SimpleTestResult(true, Name + ": Okay"));
}
catch (Exception e)
{
return(new SimpleTestResult(false, Name + ": CMS enveloped failed - " + e.ToString(), e));
}
}