1 files changed, 114 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ess/ContentHints.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ess/ContentHints.java
new file mode 100644
index 000000000..d544c937b
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/ess/ContentHints.java
@@ -0,0 +1,114 @@
+package org.spongycastle.asn1.ess;
+
+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.DERObjectIdentifier;
+import org.spongycastle.asn1.DERSequence;
+import org.spongycastle.asn1.DERUTF8String;
+
+public class ContentHints
+    extends ASN1Object
+{
+    private DERUTF8String contentDescription;
+    private ASN1ObjectIdentifier contentType;
+
+    public static ContentHints getInstance(Object o)
+    {
+        if (o instanceof ContentHints)
+        {
+            return (ContentHints)o;
+        }
+        else if (o != null)
+        {
+            return new ContentHints(ASN1Sequence.getInstance(o));
+        }
+
+        return null;
+    }
+
+    /**
+     * constructor
+     */
+    private ContentHints(ASN1Sequence seq)
+    {
+        ASN1Encodable field = seq.getObjectAt(0);
+        if (field.toASN1Primitive() instanceof DERUTF8String)
+        {
+            contentDescription = DERUTF8String.getInstance(field);
+            contentType = ASN1ObjectIdentifier.getInstance(seq.getObjectAt(1));
+        }
+        else
+        {
+            contentType = ASN1ObjectIdentifier.getInstance(seq.getObjectAt(0));
+        }
+    }
+
+    /**
+     * @deprecated use ASN1ObjectIdentifier
+     */
+    public ContentHints(
+        DERObjectIdentifier contentType)
+    {
+        this(new ASN1ObjectIdentifier(contentType.getId()));
+    }
+
+        /**
+     * @deprecated use ASN1ObjectIdentifier
+     */
+    public ContentHints(
+        DERObjectIdentifier contentType,
+        DERUTF8String contentDescription)
+    {
+        this(new ASN1ObjectIdentifier(contentType.getId()), contentDescription);
+    }
+
+    public ContentHints(
+        ASN1ObjectIdentifier contentType)
+    {
+        this.contentType = contentType;
+        this.contentDescription = null;
+    }
+
+    public ContentHints(
+        ASN1ObjectIdentifier contentType,
+        DERUTF8String contentDescription)
+    {
+        this.contentType = contentType;
+        this.contentDescription = contentDescription;
+    }
+
+    public ASN1ObjectIdentifier getContentType()
+    {
+        return contentType;
+    }
+
+    public DERUTF8String getContentDescription()
+    {
+        return contentDescription;
+    }
+
+    /**
+     * <pre>
+     * ContentHints ::= SEQUENCE {
+     *   contentDescription UTF8String (SIZE (1..MAX)) OPTIONAL,
+     *   contentType ContentType }
+     * </pre>
+     */
+    public ASN1Primitive toASN1Primitive()
+    {
+        ASN1EncodableVector v = new ASN1EncodableVector();
+
+        if (contentDescription != null)
+        {
+            v.add(contentDescription);
+        }
+
+        v.add(contentType);
+
+        return new DERSequence(v);
+    }
+}