示例#1
0
        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);
            }
        }
示例#2
0
        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]);
            }
        }
示例#3
0
        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);
            }
        }