1 files changed, 89 insertions, 0 deletions
diff --git a/Crypto/src/asn1/cms/SignerIdentifier.cs b/Crypto/src/asn1/cms/SignerIdentifier.cs
new file mode 100644
index 000000000..5742cee75
--- /dev/null
+++ b/Crypto/src/asn1/cms/SignerIdentifier.cs
@@ -0,0 +1,89 @@
+using System;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.Cms
+{
+ public class SignerIdentifier
+ : Asn1Encodable, IAsn1Choice
+ {
+ private Asn1Encodable id;
+
+ public SignerIdentifier(
+ IssuerAndSerialNumber id)
+ {
+ this.id = id;
+ }
+
+ public SignerIdentifier(
+ Asn1OctetString id)
+ {
+ this.id = new DerTaggedObject(false, 0, id);
+ }
+
+ public SignerIdentifier(
+ Asn1Object id)
+ {
+ this.id = id;
+ }
+
+ /**
+ * return a SignerIdentifier object from the given object.
+ *
+ * @param o the object we want converted.
+ * @exception ArgumentException if the object cannot be converted.
+ */
+ public static SignerIdentifier GetInstance(
+ object o)
+ {
+ if (o == null || o is SignerIdentifier)
+ return (SignerIdentifier) o;
+
+ if (o is IssuerAndSerialNumber)
+ return new SignerIdentifier((IssuerAndSerialNumber) o);
+
+ if (o is Asn1OctetString)
+ return new SignerIdentifier((Asn1OctetString) o);
+
+ if (o is Asn1Object)
+ return new SignerIdentifier((Asn1Object) o);
+
+ throw new ArgumentException(
+ "Illegal object in SignerIdentifier: " + o.GetType().Name);
+ }
+
+ public bool IsTagged
+ {
+ get { return (id is Asn1TaggedObject); }
+ }
+
+ public Asn1Encodable ID
+ {
+ get
+ {
+ if (id is Asn1TaggedObject)
+ {
+ return Asn1OctetString.GetInstance((Asn1TaggedObject)id, false);
+ }
+
+ return id;
+ }
+ }
+
+ /**
+ * Produce an object suitable for an Asn1OutputStream.
+ * <pre>
+ * SignerIdentifier ::= CHOICE {
+ * issuerAndSerialNumber IssuerAndSerialNumber,
+ * subjectKeyIdentifier [0] SubjectKeyIdentifier
+ * }
+ *
+ * SubjectKeyIdentifier ::= OCTET STRING
+ * </pre>
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ return id.ToAsn1Object();
+ }
+ }
+}
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