2003/02/12 06:21:04

[org.ibex.core.git] / src / org / bouncycastle / asn1 / cms / Attribute.java

diff --git a/src/org/bouncycastle/asn1/cms/Attribute.java b/src/org/bouncycastle/asn1/cms/Attribute.java
new file mode 100644 (file)
index 0000000..0763ea2
--- /dev/null
+++ b/src/org/bouncycastle/asn1/cms/Attribute.java
@@ -0,0 +1,75 @@
+package org.bouncycastle.asn1.cms;
+
+import org.bouncycastle.asn1.*;
+
+public class Attribute
+    implements DEREncodable
+{
+       private DERObjectIdentifier attrType;
+       private ASN1Set             attrValues;
+
+    /**
+     * return an Attribute object from the given object.
+     *
+     * @param o the object we want converted.
+     * @exception IllegalArgumentException if the object cannot be converted.
+     */
+       public static Attribute getInstance(
+        Object o)
+    {
+               if (o == null || o instanceof Attribute)
+        {
+                       return (Attribute)o;
+               }
+               
+               if (o instanceof ASN1Sequence)
+        {
+                       return new Attribute((ASN1Sequence)o);
+               }
+
+        throw new IllegalArgumentException("unknown object in factory");
+       }
+       
+       public Attribute(
+        ASN1Sequence seq)
+    {
+               attrType = (DERObjectIdentifier)seq.getObjectAt(0);
+               attrValues = (ASN1Set)seq.getObjectAt(1);
+       }
+
+       public Attribute(
+           DERObjectIdentifier attrType,
+           ASN1Set             attrValues)
+    {
+               this.attrType = attrType;
+               this.attrValues = attrValues;
+       }
+
+       public DERObjectIdentifier getAttrType()
+    {
+               return attrType;
+       }
+       
+       public ASN1Set getAttrValues()
+    {
+               return attrValues;
+       }
+
+    /** 
+     * <pre>
+     * Attribute ::= SEQUENCE {
+     *         attrType OBJECT IDENTIFIER,
+     *         attrValues SET OF AttributeValue
+     * }
+     * </pre>
+     */
+       public DERObject getDERObject()
+    {
+               DEREncodableVector v = new DEREncodableVector();
+
+               v.add(attrType);
+               v.add(attrValues);
+
+               return new DERSequence(v);
+       }
+}