1 files changed, 98 insertions, 0 deletions
diff --git a/crypto/src/asn1/ocsp/CertID.cs b/crypto/src/asn1/ocsp/CertID.cs
new file mode 100644
index 000000000..4b251095b
--- /dev/null
+++ b/crypto/src/asn1/ocsp/CertID.cs
@@ -0,0 +1,98 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.X509;
+
+namespace Org.BouncyCastle.Asn1.Ocsp
+{
+    public class CertID
+        : Asn1Encodable
+    {
+        private readonly AlgorithmIdentifier    hashAlgorithm;
+        private readonly Asn1OctetString        issuerNameHash;
+        private readonly Asn1OctetString        issuerKeyHash;
+        private readonly DerInteger             serialNumber;
+
+		public static CertID GetInstance(
+			Asn1TaggedObject	obj,
+			bool				explicitly)
+		{
+			return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+		}
+
+		public static CertID GetInstance(
+			object obj)
+		{
+			if (obj == null || obj is CertID)
+			{
+				return (CertID)obj;
+			}
+
+			if (obj is Asn1Sequence)
+			{
+				return new CertID((Asn1Sequence)obj);
+			}
+
+			throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
+		}
+
+		public CertID(
+            AlgorithmIdentifier hashAlgorithm,
+            Asn1OctetString     issuerNameHash,
+            Asn1OctetString     issuerKeyHash,
+            DerInteger          serialNumber)
+        {
+            this.hashAlgorithm = hashAlgorithm;
+            this.issuerNameHash = issuerNameHash;
+            this.issuerKeyHash = issuerKeyHash;
+            this.serialNumber = serialNumber;
+        }
+
+		private CertID(
+            Asn1Sequence seq)
+        {
+			if (seq.Count != 4)
+				throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+			this.hashAlgorithm = AlgorithmIdentifier.GetInstance(seq[0]);
+            this.issuerNameHash = Asn1OctetString.GetInstance(seq[1]);
+            this.issuerKeyHash = Asn1OctetString.GetInstance(seq[2]);
+            this.serialNumber = DerInteger.GetInstance(seq[3]);
+        }
+
+		public AlgorithmIdentifier HashAlgorithm
+		{
+			get { return hashAlgorithm; }
+		}
+
+		public Asn1OctetString IssuerNameHash
+		{
+			get { return issuerNameHash; }
+		}
+
+		public Asn1OctetString IssuerKeyHash
+		{
+			get { return issuerKeyHash; }
+		}
+
+		public DerInteger SerialNumber
+		{
+			get { return serialNumber; }
+		}
+
+		/**
+         * Produce an object suitable for an Asn1OutputStream.
+         * <pre>
+         * CertID          ::=     Sequence {
+         *     hashAlgorithm       AlgorithmIdentifier,
+         *     issuerNameHash      OCTET STRING, -- Hash of Issuer's DN
+         *     issuerKeyHash       OCTET STRING, -- Hash of Issuers public key
+         *     serialNumber        CertificateSerialNumber }
+         * </pre>
+         */
+		public override Asn1Object ToAsn1Object()
+		{
+			return new DerSequence(hashAlgorithm, issuerNameHash, issuerKeyHash, serialNumber);
+		}
+	}
+}