public TimeStampRequest Generate(
string digestAlgorithmOid,
byte[] digest,
BigInteger nonce)
{
if (digestAlgorithmOid == null)
{
throw new ArgumentException("No digest algorithm specified");
}
DerObjectIdentifier digestAlgOid = new DerObjectIdentifier(digestAlgorithmOid);
AlgorithmIdentifier algID = new AlgorithmIdentifier(digestAlgOid, DerNull.Instance);
MessageImprint messageImprint = new MessageImprint(algID, digest);
X509Extensions ext = null;
if (extOrdering.Count != 0)
{
ext = new X509Extensions(extOrdering, extensions);
}
DerInteger derNonce = nonce == null
? null
: new DerInteger(nonce);
return new TimeStampRequest(
new TimeStampReq(messageImprint, reqPolicy, derNonce, certReq, ext));
}
public TimeStampReq(
MessageImprint messageImprint,
DerObjectIdentifier tsaPolicy,
DerInteger nonce,
DerBoolean certReq,
X509Extensions extensions)
{
// default
this.version = new DerInteger(1);
this.messageImprint = messageImprint;
this.tsaPolicy = tsaPolicy;
this.nonce = nonce;
this.certReq = certReq;
this.extensions = extensions;
}
private TimeStampReq(
Asn1Sequence seq)
{
int nbObjects = seq.Count;
int seqStart = 0;
// version
version = DerInteger.GetInstance(seq[seqStart++]);
// messageImprint
messageImprint = MessageImprint.GetInstance(seq[seqStart++]);
for (int opt = seqStart; opt < nbObjects; opt++)
{
// tsaPolicy
if (seq[opt] is DerObjectIdentifier)
{
tsaPolicy = DerObjectIdentifier.GetInstance(seq[opt]);
}
// nonce
else if (seq[opt] is DerInteger)
{
nonce = DerInteger.GetInstance(seq[opt]);
}
// certReq
else if (seq[opt] is DerBoolean)
{
certReq = DerBoolean.GetInstance(seq[opt]);
}
// extensions
else if (seq[opt] is Asn1TaggedObject)
{
Asn1TaggedObject tagged = (Asn1TaggedObject) seq[opt];
if (tagged.TagNo == 0)
{
extensions = X509Extensions.GetInstance(tagged, false);
}
}
}
}
//------------------------------------------------------------------------------
public TimeStampToken Generate(
TimeStampRequest request,
BigInteger serialNumber,
DateTime genTime)
{
DerObjectIdentifier digestAlgOID = new DerObjectIdentifier(request.MessageImprintAlgOid);
AlgorithmIdentifier algID = new AlgorithmIdentifier(digestAlgOID, DerNull.Instance);
MessageImprint messageImprint = new MessageImprint(algID, request.GetMessageImprintDigest());
Accuracy accuracy = null;
if (accuracySeconds > 0 || accuracyMillis > 0 || accuracyMicros > 0)
{
DerInteger seconds = null;
if (accuracySeconds > 0)
{
seconds = new DerInteger(accuracySeconds);
}
DerInteger millis = null;
if (accuracyMillis > 0)
{
millis = new DerInteger(accuracyMillis);
}
DerInteger micros = null;
if (accuracyMicros > 0)
{
micros = new DerInteger(accuracyMicros);
}
accuracy = new Accuracy(seconds, millis, micros);
}
DerBoolean derOrdering = null;
if (ordering)
{
derOrdering = DerBoolean.GetInstance(ordering);
}
DerInteger nonce = null;
if (request.Nonce != null)
{
nonce = new DerInteger(request.Nonce);
}
DerObjectIdentifier tsaPolicy = new DerObjectIdentifier(tsaPolicyOID);
if (request.ReqPolicy != null)
{
tsaPolicy = new DerObjectIdentifier(request.ReqPolicy);
}
TstInfo tstInfo = new TstInfo(tsaPolicy, messageImprint,
new DerInteger(serialNumber), new DerGeneralizedTime(genTime), accuracy,
derOrdering, nonce, tsa, request.Extensions);
try
{
CmsSignedDataGenerator signedDataGenerator = new CmsSignedDataGenerator();
byte[] derEncodedTstInfo = tstInfo.GetDerEncoded();
if (request.CertReq)
{
signedDataGenerator.AddCertificates(x509Certs);
}
signedDataGenerator.AddCrls(x509Crls);
signedDataGenerator.AddSigner(key, cert, digestOID, signedAttr, unsignedAttr);
CmsSignedData signedData = signedDataGenerator.Generate(
PkcsObjectIdentifiers.IdCTTstInfo.Id,
new CmsProcessableByteArray(derEncodedTstInfo),
true);
return new TimeStampToken(signedData);
}
catch (CmsException cmsEx)
{
throw new TspException("Error generating time-stamp token", cmsEx);
}
catch (IOException e)
{
throw new TspException("Exception encoding info", e);
}
catch (X509StoreException e)
{
throw new TspException("Exception handling CertStore", e);
}
// catch (InvalidAlgorithmParameterException e)
// {
// throw new TspException("Exception handling CertStore CRLs", e);
// }
}
private TstInfo(
Asn1Sequence seq)
{
IEnumerator e = seq.GetEnumerator();
// version
e.MoveNext();
version = DerInteger.GetInstance(e.Current);
// tsaPolicy
e.MoveNext();
tsaPolicyId = DerObjectIdentifier.GetInstance(e.Current);
// messageImprint
e.MoveNext();
messageImprint = MessageImprint.GetInstance(e.Current);
// serialNumber
e.MoveNext();
serialNumber = DerInteger.GetInstance(e.Current);
// genTime
e.MoveNext();
genTime = DerGeneralizedTime.GetInstance(e.Current);
// default for ordering
ordering = DerBoolean.False;
while (e.MoveNext())
{
Asn1Object o = (Asn1Object) e.Current;
if (o is Asn1TaggedObject)
{
DerTaggedObject tagged = (DerTaggedObject) o;
switch (tagged.TagNo)
{
case 0:
tsa = GeneralName.GetInstance(tagged, true);
break;
case 1:
extensions = X509Extensions.GetInstance(tagged, false);
break;
default:
throw new ArgumentException("Unknown tag value " + tagged.TagNo);
}
}
if (o is DerSequence)
{
accuracy = Accuracy.GetInstance(o);
}
if (o is DerBoolean)
{
ordering = DerBoolean.GetInstance(o);
}
if (o is DerInteger)
{
nonce = DerInteger.GetInstance(o);
}
}
}
public TstInfo(
DerObjectIdentifier tsaPolicyId,
MessageImprint messageImprint,
DerInteger serialNumber,
DerGeneralizedTime genTime,
Accuracy accuracy,
DerBoolean ordering,
DerInteger nonce,
GeneralName tsa,
X509Extensions extensions)
{
this.version = new DerInteger(1);
this.tsaPolicyId = tsaPolicyId;
this.messageImprint = messageImprint;
this.serialNumber = serialNumber;
this.genTime = genTime;
this.accuracy = accuracy;
this.ordering = ordering;
this.nonce = nonce;
this.tsa = tsa;
this.extensions = extensions;
}
private TstInfo(
Asn1Sequence seq)
{
IEnumerator e = seq.GetEnumerator();
// version
e.MoveNext();
version = DerInteger.GetInstance(e.Current);
// tsaPolicy
e.MoveNext();
tsaPolicyId = DerObjectIdentifier.GetInstance(e.Current);
// messageImprint
e.MoveNext();
messageImprint = MessageImprint.GetInstance(e.Current);
// serialNumber
e.MoveNext();
serialNumber = DerInteger.GetInstance(e.Current);
// genTime
e.MoveNext();
genTime = DerGeneralizedTime.GetInstance(e.Current);
// default for ordering
ordering = DerBoolean.False;
while (e.MoveNext())
{
Asn1Object o = (Asn1Object)e.Current;
if (o is Asn1TaggedObject)
{
DerTaggedObject tagged = (DerTaggedObject)o;
switch (tagged.TagNo)
{
case 0:
tsa = GeneralName.GetInstance(tagged, true);
break;
case 1:
extensions = X509Extensions.GetInstance(tagged, false);
break;
default:
throw new ArgumentException("Unknown tag value " + tagged.TagNo);
}
}
if (o is DerSequence)
{
accuracy = Accuracy.GetInstance(o);
}
if (o is DerBoolean)
{
ordering = DerBoolean.GetInstance(o);
}
if (o is DerInteger)
{
nonce = DerInteger.GetInstance(o);
}
}
}