1 files changed, 135 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/cms/MetaData.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/cms/MetaData.java
new file mode 100644
index 000000000..92cf468d7
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/cms/MetaData.java
@@ -0,0 +1,135 @@
+package org.spongycastle.asn1.cms;
+
+import org.spongycastle.asn1.ASN1Boolean;
+import org.spongycastle.asn1.ASN1EncodableVector;
+import org.spongycastle.asn1.ASN1Object;
+import org.spongycastle.asn1.ASN1Primitive;
+import org.spongycastle.asn1.ASN1Sequence;
+import org.spongycastle.asn1.DERIA5String;
+import org.spongycastle.asn1.DERSequence;
+import org.spongycastle.asn1.DERUTF8String;
+
+/**
+ * <a href="http://tools.ietf.org/html/rfc5544">RFC 5544</a>:
+ * Binding Documents with Time-Stamps; MetaData object.
+ * <p>
+ * <pre>
+ * MetaData ::= SEQUENCE {
+ *   hashProtected        BOOLEAN,
+ *   fileName             UTF8String OPTIONAL,
+ *   mediaType            IA5String OPTIONAL,
+ *   otherMetaData        Attributes OPTIONAL
+ * }
+ * </pre>
+ */
+public class MetaData
+    extends ASN1Object
+{
+    private ASN1Boolean hashProtected;
+    private DERUTF8String fileName;
+    private DERIA5String  mediaType;
+    private Attributes otherMetaData;
+
+    public MetaData(
+        ASN1Boolean hashProtected,
+        DERUTF8String fileName,
+        DERIA5String mediaType,
+        Attributes otherMetaData)
+    {
+        this.hashProtected = hashProtected;
+        this.fileName = fileName;
+        this.mediaType = mediaType;
+        this.otherMetaData = otherMetaData;
+    }
+
+    private MetaData(ASN1Sequence seq)
+    {
+        this.hashProtected = ASN1Boolean.getInstance(seq.getObjectAt(0));
+
+        int index = 1;
+
+        if (index < seq.size() && seq.getObjectAt(index) instanceof DERUTF8String)
+        {
+            this.fileName = DERUTF8String.getInstance(seq.getObjectAt(index++));
+        }
+        if (index < seq.size() && seq.getObjectAt(index) instanceof DERIA5String)
+        {
+            this.mediaType = DERIA5String.getInstance(seq.getObjectAt(index++));
+        }
+        if (index < seq.size())
+        {
+            this.otherMetaData = Attributes.getInstance(seq.getObjectAt(index++));
+        }
+    }
+
+    /**
+     * Return a MetaData object from the given object.
+     * <p>
+     * Accepted inputs:
+     * <ul>
+     * <li> null &rarr; null
+     * <li> {@link MetaData} object
+     * <li> {@link org.spongycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with MetaData structure inside
+     * </ul>
+     *
+     * @param obj the object we want converted.
+     * @exception IllegalArgumentException if the object cannot be converted.
+     */
+    public static MetaData getInstance(Object obj)
+    {
+        if (obj instanceof MetaData)
+        {
+            return (MetaData)obj;
+        }
+        else if (obj != null)
+        {
+            return new MetaData(ASN1Sequence.getInstance(obj));
+        }
+
+        return null;
+    }
+
+    public ASN1Primitive toASN1Primitive()
+    {
+        ASN1EncodableVector v = new ASN1EncodableVector();
+
+        v.add(hashProtected);
+
+        if (fileName != null)
+        {
+            v.add(fileName);
+        }
+
+        if (mediaType != null)
+        {
+            v.add(mediaType);
+        }
+
+        if (otherMetaData != null)
+        {
+            v.add(otherMetaData);
+        }
+        
+        return new DERSequence(v);
+    }
+
+    public boolean isHashProtected()
+    {
+        return hashProtected.isTrue();
+    }
+
+    public DERUTF8String getFileName()
+    {
+        return this.fileName;
+    }
+
+    public DERIA5String getMediaType()
+    {
+        return this.mediaType;
+    }
+
+    public Attributes getOtherMetaData()
+    {
+        return otherMetaData;
+    }
+}