diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBData.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBData.java
index 654e120d8..6ec45af34 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBData.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBData.java
@@ -29,14 +29,19 @@ import org.jivesoftware.smack.util.stringencoder.Base64;
  */
 public class BoBData {
 
-    private final int maxAge;
+    private final Integer maxAge;
     private final String type;
 
     private byte[] contentBinary;
     private String contentString;
 
+    private BoBData(String type, Integer maxAge) {
+        this.type = type;
+        this.maxAge = maxAge;
+    }
+
     public BoBData(String type, byte[] content) {
-        this(type, content, -1);
+        this(type, content, null);
     }
 
     /**
@@ -46,20 +51,18 @@ public class BoBData {
      * @param content TODO javadoc me please
      * @param maxAge TODO javadoc me please
      */
-    public BoBData(String type, byte[] content, int maxAge) {
-        this.type = type;
+    public BoBData(String type, byte[] content, Integer maxAge) {
+        this(type, maxAge);
         this.contentBinary = content;
-        this.maxAge = maxAge;
     }
 
     public BoBData(String type, String content) {
-        this(type, content, -1);
+        this(type, content, null);
     }
 
-    public BoBData(String type, String content, int maxAge) {
-        this.type = type;
+    public BoBData(String type, String content, Integer maxAge) {
+        this(type, maxAge);
         this.contentString = content;
-        this.maxAge = maxAge;
     }
 
     /**
@@ -67,7 +70,7 @@ public class BoBData {
      *
      * @return the max age
      */
-    public int getMaxAge() {
+    public Integer getMaxAge() {
         return maxAge;
     }
 
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBInfo.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBInfo.java
index a4db4aeae..becb5322f 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBInfo.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBInfo.java
@@ -20,15 +20,15 @@ import java.util.Set;
 
 public class BoBInfo {
 
-    private final Set<BoBHash> hashes;
+    private final Set<ContentId> hashes;
     private final BoBData data;
 
-    BoBInfo(Set<BoBHash> hashes, BoBData data) {
+    BoBInfo(Set<ContentId> hashes, BoBData data) {
         this.hashes = hashes;
         this.data = data;
     }
 
-    public Set<BoBHash> getHashes() {
+    public Set<ContentId> getHashes() {
         return hashes;
     }
 
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBManager.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBManager.java
index b3ac970d2..e368ab366 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBManager.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBManager.java
@@ -1,6 +1,6 @@
 /**
  *
- * Copyright 2016-2017 Fernando Ramirez, Florian Schmaus
+ * Copyright 2016-2020 Fernando Ramirez, Florian Schmaus
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -81,9 +81,9 @@ public final class BoBManager extends Manager {
         return bobManager;
     }
 
-    private static final LruCache<BoBHash, BoBData> BOB_CACHE = new LruCache<>(128);
+    private static final LruCache<ContentId, BoBData> BOB_CACHE = new LruCache<>(128);
 
-    private final Map<BoBHash, BoBInfo> bobs = new ConcurrentHashMap<>();
+    private final Map<ContentId, BoBInfo> bobs = new ConcurrentHashMap<>();
 
     private BoBManager(XMPPConnection connection) {
         super(connection);
@@ -95,15 +95,16 @@ public final class BoBManager extends Manager {
                     @Override
                     public IQ handleIQRequest(IQ iqRequest) {
                         BoBIQ bobIQRequest = (BoBIQ) iqRequest;
+                        ContentId contentId = bobIQRequest.getContentId();
 
-                        BoBInfo bobInfo = bobs.get(bobIQRequest.getBoBHash());
+                        BoBInfo bobInfo = bobs.get(contentId);
                         if (bobInfo == null) {
                             // TODO return item-not-found
                             return null;
                         }
 
                         BoBData bobData = bobInfo.getData();
-                        BoBIQ responseBoBIQ = new BoBIQ(bobIQRequest.getBoBHash(), bobData);
+                        BoBIQ responseBoBIQ = new BoBIQ(contentId, bobData);
                         responseBoBIQ.setType(Type.result);
                         responseBoBIQ.setTo(bobIQRequest.getFrom());
                         return responseBoBIQ;
@@ -137,7 +138,7 @@ public final class BoBManager extends Manager {
      * @throws NotConnectedException if the XMPP connection is not connected.
      * @throws InterruptedException if the calling thread was interrupted.
      */
-    public BoBData requestBoB(Jid to, BoBHash bobHash) throws NotLoggedInException, NoResponseException,
+    public BoBData requestBoB(Jid to, ContentId bobHash) throws NotLoggedInException, NoResponseException,
             XMPPErrorException, NotConnectedException, InterruptedException {
         BoBData bobData = BOB_CACHE.lookup(bobHash);
         if (bobData != null) {
@@ -159,9 +160,9 @@ public final class BoBManager extends Manager {
 
     public BoBInfo addBoB(BoBData bobData) {
         // We only support SHA-1 for now.
-        BoBHash bobHash = new BoBHash(SHA1.hex(bobData.getContent()), "sha1");
+        ContentId bobHash = new ContentId(SHA1.hex(bobData.getContent()), "sha1");
 
-        Set<BoBHash> bobHashes = Collections.singleton(bobHash);
+        Set<ContentId> bobHashes = Collections.singleton(bobHash);
         bobHashes = Collections.unmodifiableSet(bobHashes);
 
         BoBInfo bobInfo = new BoBInfo(bobHashes, bobData);
@@ -171,12 +172,12 @@ public final class BoBManager extends Manager {
         return bobInfo;
     }
 
-    public BoBInfo removeBoB(BoBHash bobHash) {
+    public BoBInfo removeBoB(ContentId bobHash) {
         BoBInfo bobInfo = bobs.remove(bobHash);
         if (bobInfo == null) {
             return null;
         }
-        for (BoBHash otherBobHash : bobInfo.getHashes()) {
+        for (ContentId otherBobHash : bobInfo.getHashes()) {
             bobs.remove(otherBobHash);
         }
         return bobInfo;
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBHash.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/ContentId.java
similarity index 79%
rename from smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBHash.java
rename to smack-extensions/src/main/java/org/jivesoftware/smackx/bob/ContentId.java
index 8175de8be..5b5265bd9 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/BoBHash.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/ContentId.java
@@ -19,29 +19,32 @@ package org.jivesoftware.smackx.bob;
 import org.jivesoftware.smack.util.StringUtils;
 
 /**
- * Bits of Binary hash class.
+ * Content-ID class.
  *
  * @author Fernando Ramirez
  * @author Florian Schmaus
- * @see <a href="http://xmpp.org/extensions/xep-0231.html">XEP-0231: Bits of
- *      Binary</a>
+ * @see <a href="https://tools.ietf.org/html/rfc2392">RFC 2392: Content-ID and Message-ID Uniform Resource Locators</a>
  */
-public class BoBHash {
+public class ContentId {
 
     private final String hash;
     private final String hashType;
     private final String cid;
 
+    private ContentId(String hash, String hashType, String cid) {
+        this.hash = StringUtils.requireNotNullNorEmpty(hash, "hash must not be null nor empty");
+        this.hashType = StringUtils.requireNotNullNorEmpty(hashType, "hashType must not be null nor empty");
+        this.cid = cid;
+    }
+
     /**
      * BoB hash constructor.
      *
      * @param hash TODO javadoc me please
      * @param hashType TODO javadoc me please
      */
-    public BoBHash(String hash, String hashType) {
-        this.hash = StringUtils.requireNotNullNorEmpty(hash, "hash must not be null nor empty");
-        this.hashType = StringUtils.requireNotNullNorEmpty(hashType, "hashType must not be null nor empty");
-        this.cid = this.hashType + '+' + this.hash + "@bob.xmpp.org";
+    public ContentId(String hash, String hashType) {
+        this(hash, hashType, hashType + '+' + hash + "@bob.xmpp.org");
     }
 
     /**
@@ -82,8 +85,8 @@ public class BoBHash {
 
     @Override
     public boolean equals(Object other) {
-        if (other instanceof BoBHash) {
-            BoBHash otherBob = (BoBHash) other;
+        if (other instanceof ContentId) {
+            ContentId otherBob = (ContentId) other;
             return cid.equals(otherBob.cid);
         }
         return false;
@@ -100,10 +103,10 @@ public class BoBHash {
      * @param src TODO javadoc me please
      * @return the BoB hash
      */
-    public static BoBHash fromSrc(String src) {
+    public static ContentId fromSrc(String src) {
         String hashType = src.substring(src.lastIndexOf("cid:") + 4, src.indexOf("+"));
         String hash = src.substring(src.indexOf("+") + 1, src.indexOf("@bob.xmpp.org"));
-        return new BoBHash(hash, hashType);
+        return new ContentId(hash, hashType);
     }
 
     /**
@@ -112,10 +115,10 @@ public class BoBHash {
      * @param cid TODO javadoc me please
      * @return the BoB hash
      */
-    public static BoBHash fromCid(String cid) {
+    public static ContentId fromCid(String cid) {
         String hashType = cid.substring(0, cid.indexOf("+"));
         String hash = cid.substring(cid.indexOf("+") + 1, cid.indexOf("@bob.xmpp.org"));
-        return new BoBHash(hash, hashType);
+        return new ContentId(hash, hashType, cid);
     }
 
 }
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBDataExtension.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBDataExtension.java
new file mode 100644
index 000000000..76414d9bc
--- /dev/null
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBDataExtension.java
@@ -0,0 +1,81 @@
+/**
+ *
+ * Copyright 2020 Florian Schmaus
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.bob.element;
+
+import org.jivesoftware.smack.packet.ExtensionElement;
+import org.jivesoftware.smack.packet.Message;
+import org.jivesoftware.smack.util.Objects;
+import org.jivesoftware.smack.util.XmlStringBuilder;
+import org.jivesoftware.smackx.bob.BoBData;
+import org.jivesoftware.smackx.bob.BoBManager;
+import org.jivesoftware.smackx.bob.ContentId;
+
+/**
+ * Bits of Binary data extension element.
+ *
+ * @author Florian Schmaus
+ * @see <a href="http://xmpp.org/extensions/xep-0231.html">XEP-0231: Bits of
+ *      Binary</a>
+ */
+public class BoBDataExtension implements ExtensionElement {
+
+    public static final String ELEMENT = "data";
+    public static final String NAMESPACE = BoBManager.NAMESPACE;
+
+    private final ContentId cid;
+    private final BoBData bobData;
+
+    /**
+     * Bits of Binary data extension constructor.
+     *
+     * @param cid TODO javadoc me please
+     * @param bobData TODO javadoc me please
+     */
+    public BoBDataExtension(ContentId cid, BoBData bobData) {
+        this.cid = Objects.requireNonNull(cid);
+        this.bobData = Objects.requireNonNull(bobData);
+    }
+
+    @Override
+    public String getElementName() {
+        return ELEMENT;
+    }
+
+    @Override
+    public String getNamespace() {
+        return NAMESPACE;
+    }
+
+    @Override
+    public XmlStringBuilder toXML(org.jivesoftware.smack.packet.XmlEnvironment enclosingNamespace) {
+        XmlStringBuilder xml = new XmlStringBuilder(this);
+        xml.attribute("cid", cid.getCid());
+        xml.attribute("type", bobData.getType());
+        xml.optAttribute("max-age", bobData.getMaxAge());
+        xml.rightAngleBracket();
+
+        xml.append(bobData.getContentBase64Encoded());
+
+        xml.closeElement(this);
+        return xml;
+    }
+
+    public static BoBDataExtension from(Message message) {
+        return message.getExtension(BoBDataExtension.class);
+    }
+
+}
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBExtension.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBExtension.java
deleted file mode 100644
index 442474fa1..000000000
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBExtension.java
+++ /dev/null
@@ -1,97 +0,0 @@
-/**
- *
- * Copyright 2016 Fernando Ramirez
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.jivesoftware.smackx.bob.element;
-
-import org.jivesoftware.smack.packet.Message;
-import org.jivesoftware.smack.util.XmlStringBuilder;
-
-import org.jivesoftware.smackx.bob.BoBHash;
-import org.jivesoftware.smackx.xhtmlim.XHTMLText;
-import org.jivesoftware.smackx.xhtmlim.packet.XHTMLExtension;
-
-/**
- * Bits of Binary extension element.
- *
- * @author Fernando Ramirez
- * @see <a href="http://xmpp.org/extensions/xep-0231.html">XEP-0231: Bits of
- *      Binary</a>
- */
-public class BoBExtension extends XHTMLExtension {
-
-    private final BoBHash bobHash;
-    private final String alt;
-    private final String paragraph;
-
-    /**
-     * Bits of Binary extension constructor.
-     *
-     * @param bobHash TODO javadoc me please
-     * @param alt TODO javadoc me please
-     * @param paragraph TODO javadoc me please
-     */
-    public BoBExtension(BoBHash bobHash, String alt, String paragraph) {
-        this.bobHash = bobHash;
-        this.alt = alt;
-        this.paragraph = paragraph;
-    }
-
-    /**
-     * Get the BoB hash.
-     *
-     * @return the BoB hash
-     */
-    public BoBHash getBoBHash() {
-        return bobHash;
-    }
-
-    /**
-     * Get the alt field.
-     *
-     * @return the alt field
-     */
-    public String getAlt() {
-        return alt;
-    }
-
-    @Override
-    public XmlStringBuilder toXML(org.jivesoftware.smack.packet.XmlEnvironment enclosingNamespace) {
-        XmlStringBuilder xml = new XmlStringBuilder(this);
-        xml.rightAngleBracket();
-
-        xml.halfOpenElement(Message.BODY);
-        xml.xmlnsAttribute(XHTMLText.NAMESPACE);
-        xml.rightAngleBracket();
-
-        xml.openElement(XHTMLText.P);
-        xml.optEscape(paragraph);
-
-        xml.halfOpenElement(XHTMLText.IMG);
-        xml.optAttribute("alt", alt);
-        xml.attribute("src", bobHash.toSrc());
-        xml.closeEmptyElement();
-
-        xml.closeElement(XHTMLText.P);
-        xml.closeElement(Message.BODY);
-        xml.closeElement(this);
-        return xml;
-    }
-
-    public static BoBExtension from(Message message) {
-        return (BoBExtension) message.getExtensionElement(ELEMENT, NAMESPACE);
-    }
-
-}
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBIQ.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBIQ.java
index b79d5d145..085df5fd5 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBIQ.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/element/BoBIQ.java
@@ -1,6 +1,6 @@
 /**
  *
- * Copyright 2016 Fernando Ramirez
+ * Copyright 2016 Fernando Ramirez, 2020 Florian Schmaus
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,8 +19,8 @@ package org.jivesoftware.smackx.bob.element;
 import org.jivesoftware.smack.packet.IQ;
 
 import org.jivesoftware.smackx.bob.BoBData;
-import org.jivesoftware.smackx.bob.BoBHash;
 import org.jivesoftware.smackx.bob.BoBManager;
+import org.jivesoftware.smackx.bob.ContentId;
 
 /**
  * Bits of Binary IQ class.
@@ -41,28 +41,40 @@ public class BoBIQ extends IQ {
      */
     public static final String NAMESPACE = BoBManager.NAMESPACE;
 
-    private final BoBHash bobHash;
+    private final ContentId cid;
     private final BoBData bobData;
 
     /**
      * Bits of Binary IQ constructor.
      *
-     * @param bobHash TODO javadoc me please
+     * @param cid TODO javadoc me please
      * @param bobData TODO javadoc me please
      */
-    public BoBIQ(BoBHash bobHash, BoBData bobData) {
+    public BoBIQ(ContentId cid, BoBData bobData) {
         super(ELEMENT, NAMESPACE);
-        this.bobHash = bobHash;
+        this.cid = cid;
         this.bobData = bobData;
     }
 
     /**
      * Bits of Binary IQ constructor.
      *
-     * @param bobHash TODO javadoc me please
+     * @param cid TODO javadoc me please
      */
-    public BoBIQ(BoBHash bobHash) {
-        this(bobHash, null);
+    public BoBIQ(ContentId cid) {
+        this(cid, null);
+    }
+
+    /**
+     * Get the BoB hash.
+     *
+     * @return the BoB hash
+     * @deprecated use {@link #getContentId()} instead.
+     */
+    // TODO: Remove in Smack 4.5.
+    @Deprecated
+    public ContentId getBoBHash() {
+        return cid;
     }
 
     /**
@@ -70,8 +82,8 @@ public class BoBIQ extends IQ {
      *
      * @return the BoB hash
      */
-    public BoBHash getBoBHash() {
-        return bobHash;
+    public ContentId getContentId() {
+        return cid;
     }
 
     /**
@@ -85,7 +97,7 @@ public class BoBIQ extends IQ {
 
     @Override
     protected IQChildElementXmlStringBuilder getIQChildElementBuilder(IQChildElementXmlStringBuilder xml) {
-        xml.attribute("cid", bobHash.getCid());
+        xml.attribute("cid", cid.getCid());
 
         if (bobData != null) {
             xml.optIntAttribute("max_age", bobData.getMaxAge());
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBDataExtensionProvider.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBDataExtensionProvider.java
new file mode 100644
index 000000000..a633c8b07
--- /dev/null
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBDataExtensionProvider.java
@@ -0,0 +1,41 @@
+/**
+ *
+ * Copyright 2020 Florian Schmaus
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.bob.provider;
+
+import java.io.IOException;
+
+import org.jivesoftware.smack.packet.XmlEnvironment;
+import org.jivesoftware.smack.provider.ExtensionElementProvider;
+import org.jivesoftware.smack.util.Pair;
+import org.jivesoftware.smack.xml.XmlPullParser;
+import org.jivesoftware.smack.xml.XmlPullParserException;
+import org.jivesoftware.smackx.bob.BoBData;
+import org.jivesoftware.smackx.bob.ContentId;
+import org.jivesoftware.smackx.bob.element.BoBDataExtension;
+
+public class BoBDataExtensionProvider extends ExtensionElementProvider<BoBDataExtension> {
+
+    @Override
+    public BoBDataExtension parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment)
+                    throws XmlPullParserException, IOException {
+        Pair<ContentId, BoBData> parserResult = BoBProviderUtil.parseContentIdAndBobData(parser, initialDepth,
+                        xmlEnvironment);
+
+        return new BoBDataExtension(parserResult.getFirst(), parserResult.getSecond());
+    }
+
+}
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBIQProvider.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBIQProvider.java
index 36f820256..a1e9f92f3 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBIQProvider.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBIQProvider.java
@@ -20,12 +20,12 @@ import java.io.IOException;
 
 import org.jivesoftware.smack.packet.XmlEnvironment;
 import org.jivesoftware.smack.provider.IQProvider;
-import org.jivesoftware.smack.util.ParserUtils;
+import org.jivesoftware.smack.util.Pair;
 import org.jivesoftware.smack.xml.XmlPullParser;
 import org.jivesoftware.smack.xml.XmlPullParserException;
 
 import org.jivesoftware.smackx.bob.BoBData;
-import org.jivesoftware.smackx.bob.BoBHash;
+import org.jivesoftware.smackx.bob.ContentId;
 import org.jivesoftware.smackx.bob.element.BoBIQ;
 
 /**
@@ -39,22 +39,10 @@ public class BoBIQProvider extends IQProvider<BoBIQ> {
 
     @Override
     public BoBIQ parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException {
-        String cid = parser.getAttributeValue("", "cid");
-        BoBHash bobHash = BoBHash.fromCid(cid);
+        Pair<ContentId, BoBData> parserResult = BoBProviderUtil.parseContentIdAndBobData(parser, initialDepth,
+                        xmlEnvironment);
 
-        String dataType = parser.getAttributeValue("", "type");
-        int maxAge = ParserUtils.getIntegerAttribute(parser, "max-age", -1);
-
-        String base64EncodedData = parser.nextText();
-
-        BoBData bobData;
-        if (dataType != null) {
-            bobData = new BoBData(dataType, base64EncodedData, maxAge);
-        } else {
-            bobData = null;
-        }
-
-        return new BoBIQ(bobHash, bobData);
+        return new BoBIQ(parserResult.getFirst(), parserResult.getSecond());
     }
 
 }
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBProviderUtil.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBProviderUtil.java
new file mode 100644
index 000000000..81c166b45
--- /dev/null
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/bob/provider/BoBProviderUtil.java
@@ -0,0 +1,48 @@
+/**
+ *
+ * Copyright 2020 Florian Schmaus
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.bob.provider;
+
+import java.io.IOException;
+
+import org.jivesoftware.smack.packet.XmlEnvironment;
+import org.jivesoftware.smack.util.Pair;
+import org.jivesoftware.smack.util.ParserUtils;
+import org.jivesoftware.smack.xml.XmlPullParser;
+import org.jivesoftware.smack.xml.XmlPullParserException;
+import org.jivesoftware.smackx.bob.BoBData;
+import org.jivesoftware.smackx.bob.ContentId;
+
+public class BoBProviderUtil {
+
+    public static Pair<ContentId, BoBData> parseContentIdAndBobData(XmlPullParser parser, int initialDepth,
+                    XmlEnvironment xmlEnvironment) throws IOException, XmlPullParserException {
+        String cid = parser.getAttributeValue("", "cid");
+        ContentId contentId = ContentId.fromCid(cid);
+
+        String dataType = parser.getAttributeValue("", "type");
+        Integer maxAge = ParserUtils.getIntegerAttribute(parser, "max-age");
+
+        String base64EncodedData = parser.nextText();
+
+        BoBData bobData = null;
+        if (dataType != null) {
+            bobData = new BoBData(dataType, base64EncodedData, maxAge);
+        }
+
+        return Pair.create(contentId, bobData);
+    }
+}
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/xhtmlim/packet/XHTMLExtension.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/xhtmlim/packet/XHTMLExtension.java
index 75ebd5bdf..a49020f68 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/xhtmlim/packet/XHTMLExtension.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/xhtmlim/packet/XHTMLExtension.java
@@ -37,7 +37,7 @@ import org.jivesoftware.smack.util.XmlStringBuilder;
  *
  * @author Gaston Dombiak
  */
-public class XHTMLExtension implements ExtensionElement {
+public final class XHTMLExtension implements ExtensionElement {
 
     public static final String ELEMENT = "html";
     public static final String NAMESPACE = "http://jabber.org/protocol/xhtml-im";
diff --git a/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.providers b/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.providers
index 6d7ebc38c..19c19a305 100644
--- a/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.providers
+++ b/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.providers
@@ -500,6 +500,12 @@
     </extensionProvider>
 
     <!-- XEP-0231: Bits of Binary -->
+    <extensionProvider>
+        <elementName>data</elementName>
+        <namespace>urn:xmpp:bob</namespace>
+        <className>org.jivesoftware.smackx.bob.provider.BoBDataExtensionProvider</className>
+    </extensionProvider>
+
     <iqProvider>
         <elementName>data</elementName>
         <namespace>urn:xmpp:bob</namespace>
diff --git a/smack-extensions/src/test/java/org/jivesoftware/smackx/bob/BoBIQTest.java b/smack-extensions/src/test/java/org/jivesoftware/smackx/bob/BoBIQTest.java
index bc17dd23e..63c2d0183 100644
--- a/smack-extensions/src/test/java/org/jivesoftware/smackx/bob/BoBIQTest.java
+++ b/smack-extensions/src/test/java/org/jivesoftware/smackx/bob/BoBIQTest.java
@@ -41,7 +41,7 @@ public class BoBIQTest extends SmackTestSuite {
 
     @Test
     public void checkBoBIQRequest() throws Exception {
-        BoBHash bobHash = new BoBHash("8f35fef110ffc5df08d579a50083ff9308fb6242", "sha1");
+        ContentId bobHash = new ContentId("8f35fef110ffc5df08d579a50083ff9308fb6242", "sha1");
 
         BoBIQ createdBoBIQ = new BoBIQ(bobHash);
         createdBoBIQ.setStanzaId("sarasa");
@@ -55,7 +55,7 @@ public class BoBIQTest extends SmackTestSuite {
     public void checkBoBIQResponse() throws Exception {
         BoBIQ bobIQ = PacketParserUtils.parseStanza(sampleBoBIQResponse);
 
-        BoBHash bobHash = new BoBHash("8f35fef110ffc5df08d579a50083ff9308fb6242", "sha1");
+        ContentId bobHash = new ContentId("8f35fef110ffc5df08d579a50083ff9308fb6242", "sha1");
         BoBData bobData = new BoBData("image/png", "sarasade2354j2".getBytes(StandardCharsets.UTF_8), 86400);
 
         BoBIQ createdBoBIQ = new BoBIQ(bobHash, bobData);
@@ -63,8 +63,8 @@ public class BoBIQTest extends SmackTestSuite {
         createdBoBIQ.setTo(JidCreate.from("doctor@shakespeare.lit/pda"));
         createdBoBIQ.setType(Type.result);
 
-        assertEquals(bobIQ.getBoBHash().getHash(), createdBoBIQ.getBoBHash().getHash());
-        assertEquals(bobIQ.getBoBHash().getHashType(), createdBoBIQ.getBoBHash().getHashType());
+        assertEquals(bobIQ.getContentId().getHash(), createdBoBIQ.getContentId().getHash());
+        assertEquals(bobIQ.getContentId().getHashType(), createdBoBIQ.getContentId().getHashType());
         assertEquals(bobIQ.getBoBData().getMaxAge(), createdBoBIQ.getBoBData().getMaxAge());
         assertEquals(bobIQ.getBoBData().getType(), createdBoBIQ.getBoBData().getType());
         assertEquals(bobIQ.getBoBData().getContentBase64Encoded(), createdBoBIQ.getBoBData().getContentBase64Encoded());