1 files changed, 81 insertions, 0 deletions
diff --git a/crypto/src/asn1/x509/X509ExtensionsGenerator.cs b/crypto/src/asn1/x509/X509ExtensionsGenerator.cs
new file mode 100644
index 000000000..d6f567b22
--- /dev/null
+++ b/crypto/src/asn1/x509/X509ExtensionsGenerator.cs
@@ -0,0 +1,81 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+ /// <remarks>Generator for X.509 extensions</remarks>
+ public class X509ExtensionsGenerator
+ {
+ private IDictionary extensions = Platform.CreateHashtable();
+ private IList extOrdering = Platform.CreateArrayList();
+
+ /// <summary>Reset the generator</summary>
+ public void Reset()
+ {
+ extensions = Platform.CreateHashtable();
+ extOrdering = Platform.CreateArrayList();
+ }
+
+ /// <summary>
+ /// Add an extension with the given oid and the passed in value to be included
+ /// in the OCTET STRING associated with the extension.
+ /// </summary>
+ /// <param name="oid">OID for the extension.</param>
+ /// <param name="critical">True if critical, false otherwise.</param>
+ /// <param name="extValue">The ASN.1 object to be included in the extension.</param>
+ public void AddExtension(
+ DerObjectIdentifier oid,
+ bool critical,
+ Asn1Encodable extValue)
+ {
+ byte[] encoded;
+ try
+ {
+ encoded = extValue.GetDerEncoded();
+ }
+ catch (Exception e)
+ {
+ throw new ArgumentException("error encoding value: " + e);
+ }
+
+ this.AddExtension(oid, critical, encoded);
+ }
+
+ /// <summary>
+ /// Add an extension with the given oid and the passed in byte array to be wrapped
+ /// in the OCTET STRING associated with the extension.
+ /// </summary>
+ /// <param name="oid">OID for the extension.</param>
+ /// <param name="critical">True if critical, false otherwise.</param>
+ /// <param name="extValue">The byte array to be wrapped.</param>
+ public void AddExtension(
+ DerObjectIdentifier oid,
+ bool critical,
+ byte[] extValue)
+ {
+ if (extensions.Contains(oid))
+ {
+ throw new ArgumentException("extension " + oid + " already added");
+ }
+
+ extOrdering.Add(oid);
+ extensions.Add(oid, new X509Extension(critical, new DerOctetString(extValue)));
+ }
+
+ /// <summary>Return true if there are no extension present in this generator.</summary>
+ /// <returns>True if empty, false otherwise</returns>
+ public bool IsEmpty
+ {
+ get { return extOrdering.Count < 1; }
+ }
+
+ /// <summary>Generate an X509Extensions object based on the current state of the generator.</summary>
+ /// <returns>An <c>X509Extensions</c> object</returns>
+ public X509Extensions Generate()
+ {
+ return new X509Extensions(extOrdering, extensions);
+ }
+ }
+}
|
