public EnvelopedData(OriginatorInfo originatorInfo, Asn1Set recipientInfos, EncryptedContentInfo encryptedContentInfo, Attributes unprotectedAttrs)
{
this.version = new DerInteger(EnvelopedData.CalculateVersion(originatorInfo, recipientInfos, Asn1Set.GetInstance(unprotectedAttrs)));
this.originatorInfo = originatorInfo;
this.recipientInfos = recipientInfos;
this.encryptedContentInfo = encryptedContentInfo;
this.unprotectedAttrs = Asn1Set.GetInstance(unprotectedAttrs);
}
private Asn1Object CreateDERForRecipient(byte[] inp, X509Certificate cert) {
String s = "1.2.840.113549.3.2";
byte[] outp = new byte[100];
DerObjectIdentifier derob = new DerObjectIdentifier(s);
byte[] keyp = IVGenerator.GetIV(16);
IBufferedCipher cf = CipherUtilities.GetCipher(derob);
KeyParameter kp = new KeyParameter(keyp);
byte[] iv = IVGenerator.GetIV(cf.GetBlockSize());
ParametersWithIV piv = new ParametersWithIV(kp, iv);
cf.Init(true, piv);
int len = cf.DoFinal(inp, outp, 0);
byte[] abyte1 = new byte[len];
System.Array.Copy(outp, 0, abyte1, 0, len);
DerOctetString deroctetstring = new DerOctetString(abyte1);
KeyTransRecipientInfo keytransrecipientinfo = ComputeRecipientInfo(cert, keyp);
DerSet derset = new DerSet(new RecipientInfo(keytransrecipientinfo));
Asn1EncodableVector ev = new Asn1EncodableVector();
ev.Add(new DerInteger(58));
ev.Add(new DerOctetString(iv));
DerSequence seq = new DerSequence(ev);
AlgorithmIdentifier algorithmidentifier = new AlgorithmIdentifier(derob, seq);
EncryptedContentInfo encryptedcontentinfo =
new EncryptedContentInfo(PkcsObjectIdentifiers.Data, algorithmidentifier, deroctetstring);
Asn1Set set = null;
EnvelopedData env = new EnvelopedData(null, derset, encryptedcontentinfo, set);
Org.BouncyCastle.Asn1.Cms.ContentInfo contentinfo =
new Org.BouncyCastle.Asn1.Cms.ContentInfo(PkcsObjectIdentifiers.EnvelopedData, env);
return contentinfo.ToAsn1Object();
}
public EncryptedKey(EnvelopedData envelopedData)
{
this.envelopedData = envelopedData;
}
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);
}
}
public static EnvelopedData GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return(EnvelopedData.GetInstance(Asn1Sequence.GetInstance(obj, explicitly)));
}