public TBSCertificateStructure(
ASN1Sequence seq)
{
int seqStart = 0;
this.seq = seq;
//
// some certficates don't include a version number - we assume v1
//
if (seq.getObjectAt(0) is DERTaggedObject)
{
version = DERInteger.getInstance(seq.getObjectAt(0));
}
else
{
seqStart = -1; // field 0 is missing!
version = new DERInteger(0);
}
serialNumber = DERInteger.getInstance(seq.getObjectAt(seqStart + 1));
signature = AlgorithmIdentifier.getInstance(seq.getObjectAt(seqStart + 2));
issuer = X509Name.getInstance(seq.getObjectAt(seqStart + 3));
//
// before and after dates
//
ASN1Sequence dates = (ASN1Sequence)seq.getObjectAt(seqStart + 4);
startDate = Time.getInstance(dates.getObjectAt(0));
endDate = Time.getInstance(dates.getObjectAt(1));
subject = X509Name.getInstance(seq.getObjectAt(seqStart + 5));
//
// public key info.
//
subjectPublicKeyInfo = SubjectPublicKeyInfo.getInstance(seq.getObjectAt(seqStart + 6));
for (int extras = seq.size() - (seqStart + 6) - 1; extras > 0; extras--)
{
DERTaggedObject extra = (DERTaggedObject)seq.getObjectAt(seqStart + 6 + extras);
switch ((int)extra.getTagNo())
{
case 1:
issuerUniqueId = DERBitString.getInstance(extra, false);
break;
case 2:
subjectUniqueId = DERBitString.getInstance(extra, false);
break;
case 3:
extensions = X509Extensions.getInstance(extra);
break;
}
}
}
public TBSCertList(
ASN1Sequence seq)
{
int seqPos = 0;
this.seq = seq;
if (seq.getObjectAt(seqPos) is DERInteger)
{
version = (DERInteger)seq.getObjectAt(seqPos++);
}
else
{
version = new DERInteger(0);
}
signature = AlgorithmIdentifier.getInstance(seq.getObjectAt(seqPos++));
issuer = X509Name.getInstance(seq.getObjectAt(seqPos++));
thisUpdate = Time.getInstance(seq.getObjectAt(seqPos++));
if (seqPos < seq.size() &&
(seq.getObjectAt(seqPos) is DERUTCTime ||
seq.getObjectAt(seqPos) is DERGeneralizedTime ||
seq.getObjectAt(seqPos) is Time))
{
nextUpdate = Time.getInstance(seq.getObjectAt(seqPos++));
}
if (seqPos < seq.size() &&
!(seq.getObjectAt(seqPos) is DERTaggedObject))
{
ASN1Sequence certs = (ASN1Sequence)seq.getObjectAt(seqPos++);
revokedCertificates = new CRLEntry[certs.size()];
for (int i = 0; i < revokedCertificates.Length; i++)
{
revokedCertificates[i] = new CRLEntry((ASN1Sequence)certs.getObjectAt(i));
}
}
if (seqPos < seq.size() &&
seq.getObjectAt(seqPos) is DERTaggedObject)
{
crlExtensions = X509Extensions.getInstance(seq.getObjectAt(seqPos++));
}
}