diff --git a/Crypto/src/asn1/x509/V2AttributeCertificateInfoGenerator.cs b/Crypto/src/asn1/x509/V2AttributeCertificateInfoGenerator.cs
new file mode 100644
index 000000000..02580b5b8
--- /dev/null
+++ b/Crypto/src/asn1/x509/V2AttributeCertificateInfoGenerator.cs
@@ -0,0 +1,137 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+ /**
+ * Generator for Version 2 AttributeCertificateInfo
+ * <pre>
+ * AttributeCertificateInfo ::= Sequence {
+ * version AttCertVersion -- version is v2,
+ * holder Holder,
+ * issuer AttCertIssuer,
+ * signature AlgorithmIdentifier,
+ * serialNumber CertificateSerialNumber,
+ * attrCertValidityPeriod AttCertValidityPeriod,
+ * attributes Sequence OF Attr,
+ * issuerUniqueID UniqueIdentifier OPTIONAL,
+ * extensions Extensions OPTIONAL
+ * }
+ * </pre>
+ *
+ */
+ public class V2AttributeCertificateInfoGenerator
+ {
+ internal DerInteger version;
+ internal Holder holder;
+ internal AttCertIssuer issuer;
+ internal AlgorithmIdentifier signature;
+ internal DerInteger serialNumber;
+// internal AttCertValidityPeriod attrCertValidityPeriod;
+ internal Asn1EncodableVector attributes;
+ internal DerBitString issuerUniqueID;
+ internal X509Extensions extensions;
+ internal DerGeneralizedTime startDate, endDate;
+
+ public V2AttributeCertificateInfoGenerator()
+ {
+ this.version = new DerInteger(1);
+ attributes = new Asn1EncodableVector();
+ }
+
+ public void SetHolder(
+ Holder holder)
+ {
+ this.holder = holder;
+ }
+
+ public void AddAttribute(
+ string oid,
+ Asn1Encodable value)
+ {
+ attributes.Add(new AttributeX509(new DerObjectIdentifier(oid), new DerSet(value)));
+ }
+
+ /**
+ * @param attribute
+ */
+ public void AddAttribute(AttributeX509 attribute)
+ {
+ attributes.Add(attribute);
+ }
+
+ public void SetSerialNumber(
+ DerInteger serialNumber)
+ {
+ this.serialNumber = serialNumber;
+ }
+
+ public void SetSignature(
+ AlgorithmIdentifier signature)
+ {
+ this.signature = signature;
+ }
+
+ public void SetIssuer(
+ AttCertIssuer issuer)
+ {
+ this.issuer = issuer;
+ }
+
+ public void SetStartDate(
+ DerGeneralizedTime startDate)
+ {
+ this.startDate = startDate;
+ }
+
+ public void SetEndDate(
+ DerGeneralizedTime endDate)
+ {
+ this.endDate = endDate;
+ }
+
+ public void SetIssuerUniqueID(
+ DerBitString issuerUniqueID)
+ {
+ this.issuerUniqueID = issuerUniqueID;
+ }
+
+ public void SetExtensions(
+ X509Extensions extensions)
+ {
+ this.extensions = extensions;
+ }
+
+ public AttributeCertificateInfo GenerateAttributeCertificateInfo()
+ {
+ if ((serialNumber == null) || (signature == null)
+ || (issuer == null) || (startDate == null) || (endDate == null)
+ || (holder == null) || (attributes == null))
+ {
+ throw new InvalidOperationException("not all mandatory fields set in V2 AttributeCertificateInfo generator");
+ }
+
+ Asn1EncodableVector v = new Asn1EncodableVector(
+ version, holder, issuer, signature, serialNumber);
+
+ //
+ // before and after dates => AttCertValidityPeriod
+ //
+ v.Add(new AttCertValidityPeriod(startDate, endDate));
+
+ // Attributes
+ v.Add(new DerSequence(attributes));
+
+ if (issuerUniqueID != null)
+ {
+ v.Add(issuerUniqueID);
+ }
+
+ if (extensions != null)
+ {
+ v.Add(extensions);
+ }
+
+ return AttributeCertificateInfo.GetInstance(new DerSequence(v));
+ }
+ }
+}
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