1 files changed, 108 insertions, 0 deletions
diff --git a/crypto/src/asn1/ess/SigningCertificate.cs b/crypto/src/asn1/ess/SigningCertificate.cs
new file mode 100644
index 000000000..366749bc3
--- /dev/null
+++ b/crypto/src/asn1/ess/SigningCertificate.cs
@@ -0,0 +1,108 @@
+using System;
+
+using Org.BouncyCastle.Asn1.X509;
+
+namespace Org.BouncyCastle.Asn1.Ess
+{
+	public class SigningCertificate
+		: Asn1Encodable
+	{
+		private Asn1Sequence certs, policies;
+
+		public static SigningCertificate GetInstance(
+			object o)
+		{
+			if (o == null || o is SigningCertificate)
+			{
+				return (SigningCertificate) o;
+			}
+
+			if (o is Asn1Sequence)
+			{
+				return new SigningCertificate((Asn1Sequence) o);
+			}
+
+			throw new ArgumentException(
+				"unknown object in 'SigningCertificate' factory : "
+				+ o.GetType().Name + ".");
+		}
+
+		/**
+		 * constructors
+		 */
+		public SigningCertificate(
+			Asn1Sequence seq)
+		{
+			if (seq.Count < 1 || seq.Count > 2)
+			{
+				throw new ArgumentException("Bad sequence size: " + seq.Count);
+			}
+
+			this.certs = Asn1Sequence.GetInstance(seq[0]);
+
+			if (seq.Count > 1)
+			{
+				this.policies = Asn1Sequence.GetInstance(seq[1]);
+			}
+		}
+
+		public SigningCertificate(
+			EssCertID essCertID)
+		{
+			certs = new DerSequence(essCertID);
+		}
+
+		public EssCertID[] GetCerts()
+		{
+			EssCertID[] cs = new EssCertID[certs.Count];
+
+			for (int i = 0; i != certs.Count; i++)
+			{
+				cs[i] = EssCertID.GetInstance(certs[i]);
+			}
+
+			return cs;
+		}
+
+		public PolicyInformation[] GetPolicies()
+		{
+			if (policies == null)
+			{
+				return null;
+			}
+
+			PolicyInformation[] ps = new PolicyInformation[policies.Count];
+
+			for (int i = 0; i != policies.Count; i++)
+			{
+				ps[i] = PolicyInformation.GetInstance(policies[i]);
+			}
+
+			return ps;
+		}
+
+		/**
+		 * The definition of SigningCertificate is
+		 * <pre>
+		 * SigningCertificate ::=  SEQUENCE {
+		 *      certs        SEQUENCE OF EssCertID,
+		 *      policies     SEQUENCE OF PolicyInformation OPTIONAL
+		 * }
+		 * </pre>
+		 * id-aa-signingCertificate OBJECT IDENTIFIER ::= { iso(1)
+		 *  member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9)
+		 *  smime(16) id-aa(2) 12 }
+		 */
+		public override Asn1Object ToAsn1Object()
+		{
+			Asn1EncodableVector v = new Asn1EncodableVector(certs);
+
+			if (policies != null)
+			{
+				v.Add(policies);
+			}
+
+			return new DerSequence(v);
+		}
+	}
+}