1 files changed, 93 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/Attribute.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/Attribute.java
new file mode 100644
index 000000000..5a501e1f5
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/Attribute.java
@@ -0,0 +1,93 @@
+package org.spongycastle.asn1.x509;
+
+import org.spongycastle.asn1.ASN1Encodable;
+import org.spongycastle.asn1.ASN1EncodableVector;
+import org.spongycastle.asn1.ASN1Object;
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.ASN1Primitive;
+import org.spongycastle.asn1.ASN1Sequence;
+import org.spongycastle.asn1.ASN1Set;
+import org.spongycastle.asn1.DERSequence;
+
+public class Attribute
+    extends ASN1Object
+{
+    private ASN1ObjectIdentifier 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 instanceof Attribute)
+        {
+            return (Attribute)o;
+        }
+        
+        if (o != null)
+        {
+            return new Attribute(ASN1Sequence.getInstance(o));
+        }
+
+        return null;
+    }
+    
+    private Attribute(
+        ASN1Sequence seq)
+    {
+        if (seq.size() != 2)
+        {
+            throw new IllegalArgumentException("Bad sequence size: " + seq.size());
+        }
+
+        attrType = ASN1ObjectIdentifier.getInstance(seq.getObjectAt(0));
+        attrValues = ASN1Set.getInstance(seq.getObjectAt(1));
+    }
+
+    public Attribute(
+        ASN1ObjectIdentifier attrType,
+        ASN1Set             attrValues)
+    {
+        this.attrType = attrType;
+        this.attrValues = attrValues;
+    }
+
+    public ASN1ObjectIdentifier getAttrType()
+    {
+        return new ASN1ObjectIdentifier(attrType.getId());
+    }
+
+    public ASN1Encodable[] getAttributeValues()
+    {
+        return attrValues.toArray();
+    }
+
+    public ASN1Set getAttrValues()
+    {
+        return attrValues;
+    }
+
+    /** 
+     * Produce an object suitable for an ASN1OutputStream.
+     * <pre>
+     * Attribute ::= SEQUENCE {
+     *     attrType OBJECT IDENTIFIER,
+     *     attrValues SET OF AttributeValue
+     * }
+     * </pre>
+     */
+    public ASN1Primitive toASN1Primitive()
+    {
+        ASN1EncodableVector v = new ASN1EncodableVector();
+
+        v.add(attrType);
+        v.add(attrValues);
+
+        return new DERSequence(v);
+    }
+}