public AuthEnvelopedData(
OriginatorInfo originatorInfo,
Asn1Set recipientInfos,
EncryptedContentInfo authEncryptedContentInfo,
Asn1Set authAttrs,
Asn1OctetString mac,
Asn1Set unauthAttrs)
{
// "It MUST be set to 0."
this.version = new DerInteger(0);
this.originatorInfo = originatorInfo;
// TODO
// "There MUST be at least one element in the collection."
this.recipientInfos = recipientInfos;
this.authEncryptedContentInfo = authEncryptedContentInfo;
// TODO
// "The authAttrs MUST be present if the content type carried in
// EncryptedContentInfo is not id-data."
this.authAttrs = authAttrs;
this.mac = mac;
this.unauthAttrs = unauthAttrs;
}
public AuthenticatedData(
OriginatorInfo originatorInfo,
Asn1Set recipientInfos,
AlgorithmIdentifier macAlgorithm,
AlgorithmIdentifier digestAlgorithm,
ContentInfo encapsulatedContent,
Asn1Set authAttrs,
Asn1OctetString mac,
Asn1Set unauthAttrs)
{
if (digestAlgorithm != null || authAttrs != null)
{
if (digestAlgorithm == null || authAttrs == null)
{
throw new ArgumentException("digestAlgorithm and authAttrs must be set together");
}
}
version = new DerInteger(CalculateVersion(originatorInfo));
this.originatorInfo = originatorInfo;
this.macAlgorithm = macAlgorithm;
this.digestAlgorithm = digestAlgorithm;
this.recipientInfos = recipientInfos;
this.encapsulatedContentInfo = encapsulatedContent;
this.authAttrs = authAttrs;
this.mac = mac;
this.unauthAttrs = unauthAttrs;
}
public EnvelopedData(
OriginatorInfo originatorInfo,
Asn1Set recipientInfos,
EncryptedContentInfo encryptedContentInfo,
Attributes unprotectedAttrs)
{
this.version = new DerInteger(CalculateVersion(originatorInfo, recipientInfos, Asn1Set.GetInstance(unprotectedAttrs)));
this.originatorInfo = originatorInfo;
this.recipientInfos = recipientInfos;
this.encryptedContentInfo = encryptedContentInfo;
this.unprotectedAttrs = Asn1Set.GetInstance(unprotectedAttrs);
}
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 AuthenticatedData(
Asn1Sequence seq)
{
int index = 0;
version = (DerInteger)seq[index++];
Asn1Encodable tmp = seq[index++];
if (tmp is Asn1TaggedObject)
{
originatorInfo = OriginatorInfo.GetInstance((Asn1TaggedObject)tmp, false);
tmp = seq[index++];
}
recipientInfos = Asn1Set.GetInstance(tmp);
macAlgorithm = AlgorithmIdentifier.GetInstance(seq[index++]);
tmp = seq[index++];
if (tmp is Asn1TaggedObject)
{
digestAlgorithm = AlgorithmIdentifier.GetInstance((Asn1TaggedObject)tmp, false);
tmp = seq[index++];
}
encapsulatedContentInfo = ContentInfo.GetInstance(tmp);
tmp = seq[index++];
if (tmp is Asn1TaggedObject)
{
authAttrs = Asn1Set.GetInstance((Asn1TaggedObject)tmp, false);
tmp = seq[index++];
}
mac = Asn1OctetString.GetInstance(tmp);
if (seq.Count > index)
{
unauthAttrs = Asn1Set.GetInstance((Asn1TaggedObject)seq[index], false);
}
}
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);
}
}
public static int CalculateVersion(OriginatorInfo origInfo)
{
if (origInfo == null)
return 0;
int ver = 0;
foreach (object obj in origInfo.Certificates)
{
if (obj is Asn1TaggedObject)
{
Asn1TaggedObject tag = (Asn1TaggedObject)obj;
if (tag.TagNo == 2)
{
ver = 1;
}
else if (tag.TagNo == 3)
{
ver = 3;
break;
}
}
}
foreach (object obj in origInfo.Crls)
{
if (obj is Asn1TaggedObject)
{
Asn1TaggedObject tag = (Asn1TaggedObject)obj;
if (tag.TagNo == 1)
{
ver = 3;
break;
}
}
}
return ver;
}
public static int CalculateVersion(OriginatorInfo originatorInfo, Asn1Set recipientInfos, Asn1Set unprotectedAttrs)
{
if (originatorInfo != null || unprotectedAttrs != null)
{
return 2;
}
foreach (object o in recipientInfos)
{
RecipientInfo ri = RecipientInfo.GetInstance(o);
if (ri.Version.Value.IntValue != 0)
{
return 2;
}
}
return 0;
}
