Initial Commit

iTechSharp/srcbc/ocsp/CertificateID.cs

@@ -0,0 +1,118 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.Ocsp;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Crypto;
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Security;
+using Org.BouncyCastle.X509;
+
+namespace Org.BouncyCastle.Ocsp
+{
+	public class CertificateID
+	{
+		public const string HashSha1 = "1.3.14.3.2.26";
+
+		private readonly CertID id;
+
+		public CertificateID(
+			CertID id)
+		{
+			this.id = id;
+		}
+
+		/**
+		 * create from an issuer certificate and the serial number of the
+		 * certificate it signed.
+		 * @exception OcspException if any problems occur creating the id fields.
+		 */
+		public CertificateID(
+			string			hashAlgorithm,
+			X509Certificate	issuerCert,
+			BigInteger		number)
+		{
+			try
+			{
+				IDigest digest = DigestUtilities.GetDigest(hashAlgorithm);
+				AlgorithmIdentifier hashAlg = new AlgorithmIdentifier(
+					new DerObjectIdentifier(hashAlgorithm), DerNull.Instance);
+
+				X509Name issuerName = PrincipalUtilities.GetSubjectX509Principal(issuerCert);
+
+				byte[] encodedIssuerName = issuerName.GetEncoded();
+				digest.BlockUpdate(encodedIssuerName, 0, encodedIssuerName.Length);
+
+				byte[] hash = DigestUtilities.DoFinal(digest);
+
+				Asn1OctetString issuerNameHash = new DerOctetString(hash);
+				AsymmetricKeyParameter issuerKey = issuerCert.GetPublicKey();
+
+				SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(issuerKey);
+
+				byte[] encodedPublicKey = info.PublicKeyData.GetBytes();
+				digest.BlockUpdate(encodedPublicKey, 0, encodedPublicKey.Length);
+
+				hash = DigestUtilities.DoFinal(digest);
+
+				Asn1OctetString issuerKeyHash = new DerOctetString(hash);
+
+				DerInteger serialNumber = new DerInteger(number);
+
+				this.id = new CertID(hashAlg, issuerNameHash, issuerKeyHash, serialNumber);
+			}
+			catch (Exception e)
+			{
+				throw new OcspException("problem creating ID: " + e, e);
+			}
+		}
+
+		public string HashAlgOid
+		{
+			get { return id.HashAlgorithm.ObjectID.Id; }
+		}
+
+		public byte[] GetIssuerNameHash()
+		{
+			return id.IssuerNameHash.GetOctets();
+		}
+
+		public byte[] GetIssuerKeyHash()
+		{
+			return id.IssuerKeyHash.GetOctets();
+		}
+
+		/**
+		 * return the serial number for the certificate associated
+		 * with this request.
+		 */
+		public BigInteger SerialNumber
+		{
+			get { return id.SerialNumber.Value; }
+		}
+
+		public CertID ToAsn1Object()
+		{
+			return id;
+		}
+
+		public override bool Equals(
+			object obj)
+		{
+			if (obj == this)
+				return true;
+
+			CertificateID other = obj as CertificateID;
+
+			if (other == null)
+				return false;
+
+			return id.ToAsn1Object().Equals(other.id.ToAsn1Object());
+		}
+
+		public override int GetHashCode()
+		{
+			return id.ToAsn1Object().GetHashCode();
+		}
+	}
+}