|
public static GetInstance ( Asn1TaggedObject obj, bool explicitly ) : |
||
| obj | Asn1TaggedObject | |
| explicitly | bool | |
| return | ||
internal TbsCertificateStructure(
Asn1Sequence seq)
{
int seqStart = 0;
this.seq = seq;
//
// some certficates don't include a version number - we assume v1
//
if (seq[0] is DerTaggedObject)
{
version = DerInteger.GetInstance((Asn1TaggedObject)seq[0], true);
}
else
{
seqStart = -1; // field 0 is missing!
version = new DerInteger(0);
}
serialNumber = DerInteger.GetInstance(seq[seqStart + 1]);
signature = AlgorithmIdentifier.GetInstance(seq[seqStart + 2]);
issuer = X509Name.GetInstance(seq[seqStart + 3]);
//
// before and after dates
//
Asn1Sequence dates = (Asn1Sequence)seq[seqStart + 4];
startDate = Time.GetInstance(dates[0]);
endDate = Time.GetInstance(dates[1]);
subject = X509Name.GetInstance(seq[seqStart + 5]);
//
// public key info.
//
subjectPublicKeyInfo = SubjectPublicKeyInfo.GetInstance(seq[seqStart + 6]);
for (int extras = seq.Count - (seqStart + 6) - 1; extras > 0; extras--)
{
DerTaggedObject extra = (DerTaggedObject)seq[seqStart + 6 + extras];
switch (extra.TagNo)
{
case 1:
issuerUniqueID = DerBitString.GetInstance(extra, false);
break;
case 2:
subjectUniqueID = DerBitString.GetInstance(extra, false);
break;
case 3:
extensions = X509Extensions.GetInstance(extra);
break;
}
}
}
internal TbsCertificateStructure(Asn1Sequence seq)
{
int num = 0;
this.seq = seq;
if (seq[0] is DerTaggedObject)
{
this.version = DerInteger.GetInstance((Asn1TaggedObject)seq[0], true);
}
else
{
num = -1;
this.version = new DerInteger(0);
}
this.serialNumber = DerInteger.GetInstance(seq[num + 1]);
this.signature = AlgorithmIdentifier.GetInstance(seq[num + 2]);
this.issuer = X509Name.GetInstance(seq[num + 3]);
Asn1Sequence asn1Sequence = (Asn1Sequence)seq[num + 4];
this.startDate = Time.GetInstance(asn1Sequence[0]);
this.endDate = Time.GetInstance(asn1Sequence[1]);
this.subject = X509Name.GetInstance(seq[num + 5]);
this.subjectPublicKeyInfo = SubjectPublicKeyInfo.GetInstance(seq[num + 6]);
for (int i = seq.Count - (num + 6) - 1; i > 0; i--)
{
DerTaggedObject derTaggedObject = (DerTaggedObject)seq[num + 6 + i];
switch (derTaggedObject.TagNo)
{
case 1:
this.issuerUniqueID = DerBitString.GetInstance(derTaggedObject, false);
break;
case 2:
this.subjectUniqueID = DerBitString.GetInstance(derTaggedObject, false);
break;
case 3:
this.extensions = X509Extensions.GetInstance(derTaggedObject);
break;
}
}
}
internal TbsCertificateStructure(
Asn1Sequence seq)
{
int seqStart = 0;
this.seq = seq;
//
// some certficates don't include a version number - we assume v1
//
if (seq[0] is DerTaggedObject)
{
version = DerInteger.GetInstance((Asn1TaggedObject)seq[0], true);
}
else
{
seqStart = -1; // field 0 is missing!
version = new DerInteger(0);
}
bool isV1 = false;
bool isV2 = false;
if (version.Value.Equals(BigInteger.Zero))
{
isV1 = true;
}
else if (version.Value.Equals(BigInteger.One))
{
isV2 = true;
}
else if (!version.Value.Equals(BigInteger.Two))
{
throw new ArgumentException("version number not recognised");
}
serialNumber = DerInteger.GetInstance(seq[seqStart + 1]);
signature = AlgorithmIdentifier.GetInstance(seq[seqStart + 2]);
issuer = X509Name.GetInstance(seq[seqStart + 3]);
//
// before and after dates
//
Asn1Sequence dates = (Asn1Sequence)seq[seqStart + 4];
startDate = Time.GetInstance(dates[0]);
endDate = Time.GetInstance(dates[1]);
subject = X509Name.GetInstance(seq[seqStart + 5]);
//
// public key info.
//
subjectPublicKeyInfo = SubjectPublicKeyInfo.GetInstance(seq[seqStart + 6]);
int extras = seq.Count - (seqStart + 6) - 1;
if (extras != 0 && isV1)
{
throw new ArgumentException("version 1 certificate contains extra data");
}
while (extras > 0)
{
DerTaggedObject extra = (DerTaggedObject)seq[seqStart + 6 + extras];
switch (extra.TagNo)
{
case 1:
{
issuerUniqueID = DerBitString.GetInstance(extra, false);
break;
}
case 2:
{
subjectUniqueID = DerBitString.GetInstance(extra, false);
break;
}
case 3:
{
if (isV2)
{
throw new ArgumentException("version 2 certificate cannot contain extensions");
}
extensions = X509Extensions.GetInstance(extra);
break;
}
}
extras--;
}
}
public static SubjectPublicKeyInfo GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return(SubjectPublicKeyInfo.GetInstance(Asn1Sequence.GetInstance(obj, explicitly)));
}
