private AuthEnvelopedData(
Asn1Sequence seq)
{
int index = 0;
// TODO
// "It MUST be set to 0."
Asn1Object tmp = seq[index++].ToAsn1Object();
version = (DerInteger)tmp;
tmp = seq[index++].ToAsn1Object();
if (tmp is Asn1TaggedObject)
{
originatorInfo = OriginatorInfo.GetInstance((Asn1TaggedObject)tmp, false);
tmp = seq[index++].ToAsn1Object();
}
// TODO
// "There MUST be at least one element in the collection."
recipientInfos = Asn1Set.GetInstance(tmp);
tmp = seq[index++].ToAsn1Object();
authEncryptedContentInfo = EncryptedContentInfo.GetInstance(tmp);
tmp = seq[index++].ToAsn1Object();
if (tmp is Asn1TaggedObject)
{
authAttrs = Asn1Set.GetInstance((Asn1TaggedObject)tmp, false);
tmp = seq[index++].ToAsn1Object();
}
else
{
// TODO
// "The authAttrs MUST be present if the content type carried in
// EncryptedContentInfo is not id-data."
}
mac = Asn1OctetString.GetInstance(tmp);
if (seq.Count > index)
{
tmp = seq[index++].ToAsn1Object();
unauthAttrs = Asn1Set.GetInstance((Asn1TaggedObject)tmp, false);
}
}
private EncryptedData(
Asn1Sequence seq)
{
if (seq == null)
{
throw new ArgumentNullException("seq");
}
if (seq.Count < 2 || seq.Count > 3)
{
throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
}
this.version = DerInteger.GetInstance(seq[0]);
this.encryptedContentInfo = EncryptedContentInfo.GetInstance(seq[1]);
if (seq.Count > 2)
{
this.unprotectedAttrs = Asn1Set.GetInstance(seq[2]);
}
}
public EnvelopedData(
Asn1Sequence seq)
{
int index = 0;
version = (DerInteger)seq[index++];
object tmp = seq[index++];
if (tmp is Asn1TaggedObject)
{
originatorInfo = OriginatorInfo.GetInstance((Asn1TaggedObject)tmp, false);
tmp = seq[index++];
}
recipientInfos = Asn1Set.GetInstance(tmp);
encryptedContentInfo = EncryptedContentInfo.GetInstance(seq[index++]);
if (seq.Count > index)
{
unprotectedAttrs = Asn1Set.GetInstance((Asn1TaggedObject)seq[index], false);
}
}