C# HashSet.GetEnumerator方法代码示例

//.........这里部分代码省略.........
						if (validPolicyTree != null)
						{
							for (int j = (n - 1); j >= 0; j--)
							{
								IList nodes = policyNodes[j];

								for (int k = 0; k < nodes.Count; k++)
								{
									PkixPolicyNode node = (PkixPolicyNode)nodes[k];
									if (!node.HasChildren)
									{
										validPolicyTree = PkixCertPathValidatorUtilities.RemovePolicyNode(validPolicyTree,
											policyNodes, node);
									}
								}
							}
						}
					}
				}

				intersection = validPolicyTree;
			}
			else
			{
				//
				// (g) (iii)
				//
				// This implementation is not exactly same as the one described in
				// RFC3280.
				// However, as far as the validation result is concerned, both
				// produce
				// adequate result. The only difference is whether AnyPolicy is
				// remain
				// in the policy tree or not.
				//
				// (g) (iii) 1
				//
				ISet _validPolicyNodeSet = new HashSet();

				for (int j = 0; j < policyNodes.Length; j++)
				{
					IList _nodeDepth = policyNodes[j];

					for (int k = 0; k < _nodeDepth.Count; k++)
					{
						PkixPolicyNode _node = (PkixPolicyNode)_nodeDepth[k];

						if (Rfc3280CertPathUtilities.ANY_POLICY.Equals(_node.ValidPolicy))
						{
							foreach (PkixPolicyNode _c_node in _node.Children)
							{
								if (!Rfc3280CertPathUtilities.ANY_POLICY.Equals(_c_node.ValidPolicy))
								{
									_validPolicyNodeSet.Add(_c_node);
								}
							}
						}
					}
				}

				//
				// (g) (iii) 2
				//
				IEnumerator _vpnsIter = _validPolicyNodeSet.GetEnumerator();
				while (_vpnsIter.MoveNext())
				{
					PkixPolicyNode _node = (PkixPolicyNode)_vpnsIter.Current;
					string _validPolicy = _node.ValidPolicy;

					if (!userInitialPolicySet.Contains(_validPolicy))
					{
						validPolicyTree = PkixCertPathValidatorUtilities.RemovePolicyNode(validPolicyTree, policyNodes, _node);
					}
				}

				//
				// (g) (iii) 4
				//
				if (validPolicyTree != null)
				{
					for (int j = (n - 1); j >= 0; j--)
					{
						IList nodes = policyNodes[j];

						for (int k = 0; k < nodes.Count; k++)
						{
							PkixPolicyNode node = (PkixPolicyNode)nodes[k];
							if (!node.HasChildren)
							{
								validPolicyTree = PkixCertPathValidatorUtilities.RemovePolicyNode(validPolicyTree, policyNodes,
									node);
							}
						}
					}
				}

				intersection = validPolicyTree;
			}
			return intersection;
		}

		internal static PkixPolicyNode PrepareCertB(
			PkixCertPath	certPath,
			int				index,
			IList[]			policyNodes,
			PkixPolicyNode	validPolicyTree,
			int				policyMapping)
			//throws CertPathValidatorException
		{
			IList certs = certPath.Certificates;
			X509Certificate cert = (X509Certificate)certs[index];
			int n = certs.Count;
			// i as defined in the algorithm description
			int i = n - index;
			// (b)
			//
			Asn1Sequence pm = null;
			try
			{
				pm = (Asn1Sequence)Asn1Sequence.GetInstance(PkixCertPathValidatorUtilities.GetExtensionValue(cert, X509Extensions.PolicyMappings));
			}
			catch (Exception ex)
			{
				throw new PkixCertPathValidatorException(
					"Policy mappings extension could not be decoded.", ex, certPath, index);
			}
			PkixPolicyNode _validPolicyTree = validPolicyTree;
			if (pm != null)
			{
				Asn1Sequence mappings = (Asn1Sequence)pm;
				IDictionary m_idp = Platform.CreateHashtable();
				ISet s_idp = new HashSet();

				for (int j = 0; j < mappings.Count; j++)
				{
					Asn1Sequence mapping = (Asn1Sequence) mappings[j];
					string id_p = ((DerObjectIdentifier) mapping[0]).Id;
					string sd_p = ((DerObjectIdentifier) mapping[1]).Id;
					ISet tmp;

					if (!m_idp.Contains(id_p))
					{
						tmp = new HashSet();
						tmp.Add(sd_p);
						m_idp[id_p] = tmp;
						s_idp.Add(id_p);
					}
					else
					{
						tmp = (ISet)m_idp[id_p];
						tmp.Add(sd_p);
					}
				}

				IEnumerator it_idp = s_idp.GetEnumerator();
				while (it_idp.MoveNext())
				{
					string id_p = (string)it_idp.Current;

					//
					// (1)
					//
					if (policyMapping > 0)
					{
						bool idp_found = false;
						IEnumerator nodes_i = policyNodes[i].GetEnumerator();

						while (nodes_i.MoveNext())
						{
							PkixPolicyNode node = (PkixPolicyNode)nodes_i.Current;
							if (node.ValidPolicy.Equals(id_p))
							{
								idp_found = true;
								node.ExpectedPolicies = (ISet)m_idp[id_p];
								break;
							}
						}

						if (!idp_found)
						{
							nodes_i = policyNodes[i].GetEnumerator();
							while (nodes_i.MoveNext())
							{
								PkixPolicyNode node = (PkixPolicyNode)nodes_i.Current;
								if (Rfc3280CertPathUtilities.ANY_POLICY.Equals(node.ValidPolicy))
								{
									ISet pq = null;
									Asn1Sequence policies = null;
									try
									{
										policies = (Asn1Sequence)PkixCertPathValidatorUtilities.GetExtensionValue(cert,
											X509Extensions.CertificatePolicies);
									}
									catch (Exception e)
									{
										throw new PkixCertPathValidatorException(
											"Certificate policies extension could not be decoded.", e, certPath, index);
									}

									foreach (Asn1Encodable ae in policies)
									{
//.........这里部分代码省略.........