1 files changed, 96 insertions, 0 deletions
diff --git a/Crypto/src/asn1/esf/SignerAttribute.cs b/Crypto/src/asn1/esf/SignerAttribute.cs
new file mode 100644
index 000000000..ddee53c69
--- /dev/null
+++ b/Crypto/src/asn1/esf/SignerAttribute.cs
@@ -0,0 +1,96 @@
+using System;
+
+using Org.BouncyCastle.Asn1.X509;
+
+namespace Org.BouncyCastle.Asn1.Esf
+{
+ public class SignerAttribute
+ : Asn1Encodable
+ {
+ private Asn1Sequence claimedAttributes;
+ private AttributeCertificate certifiedAttributes;
+
+ public static SignerAttribute GetInstance(
+ object obj)
+ {
+ if (obj == null || obj is SignerAttribute)
+ return (SignerAttribute) obj;
+
+ if (obj is Asn1Sequence)
+ return new SignerAttribute(obj);
+
+ throw new ArgumentException(
+ "Unknown object in 'SignerAttribute' factory: "
+ + obj.GetType().Name,
+ "obj");
+ }
+
+ private SignerAttribute(
+ object obj)
+ {
+ Asn1Sequence seq = (Asn1Sequence) obj;
+ DerTaggedObject taggedObject = (DerTaggedObject) seq[0];
+ if (taggedObject.TagNo == 0)
+ {
+ claimedAttributes = Asn1Sequence.GetInstance(taggedObject, true);
+ }
+ else if (taggedObject.TagNo == 1)
+ {
+ certifiedAttributes = AttributeCertificate.GetInstance(taggedObject);
+ }
+ else
+ {
+ throw new ArgumentException("illegal tag.", "obj");
+ }
+ }
+
+ public SignerAttribute(
+ Asn1Sequence claimedAttributes)
+ {
+ this.claimedAttributes = claimedAttributes;
+ }
+
+ public SignerAttribute(
+ AttributeCertificate certifiedAttributes)
+ {
+ this.certifiedAttributes = certifiedAttributes;
+ }
+
+ public virtual Asn1Sequence ClaimedAttributes
+ {
+ get { return claimedAttributes; }
+ }
+
+ public virtual AttributeCertificate CertifiedAttributes
+ {
+ get { return certifiedAttributes; }
+ }
+
+ /**
+ *
+ * <pre>
+ * SignerAttribute ::= SEQUENCE OF CHOICE {
+ * claimedAttributes [0] ClaimedAttributes,
+ * certifiedAttributes [1] CertifiedAttributes }
+ *
+ * ClaimedAttributes ::= SEQUENCE OF Attribute
+ * CertifiedAttributes ::= AttributeCertificate -- as defined in RFC 3281: see clause 4.1.
+ * </pre>
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ Asn1EncodableVector v = new Asn1EncodableVector();
+
+ if (claimedAttributes != null)
+ {
+ v.Add(new DerTaggedObject(0, claimedAttributes));
+ }
+ else
+ {
+ v.Add(new DerTaggedObject(1, certifiedAttributes));
+ }
+
+ return new DerSequence(v);
+ }
+ }
+}
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