diff --git a/src/XML/element.registry.php b/src/XML/element.registry.php
index c83bd98c..9a55180d 100644
--- a/src/XML/element.registry.php
+++ b/src/XML/element.registry.php
@@ -46,7 +46,7 @@
         'AgreementMethod' => '\SimpleSAML\XMLSecurity\XML\xenc\AgreementMethod',
         'CipherData' => '\SimpleSAML\XMLSecurity\XML\xenc\CipherData',
         'CipherReference' => '\SimpleSAML\XMLSecurity\XML\xenc\CipherReference',
-//        'DHKeyValue' => '\SimpleSAML\XMLSecurity\XML\xenc\DHKeyValue',
+        'DHKeyValue' => '\SimpleSAML\XMLSecurity\XML\xenc\DHKeyValue',
         'EncryptedData' => '\SimpleSAML\XMLSecurity\XML\xenc\EncryptedData',
         'EncryptedKey' => '\SimpleSAML\XMLSecurity\XML\xenc\EncryptedKey',
         'EncryptionProperties' => '\SimpleSAML\XMLSecurity\XML\xenc\EncryptionProperties',
diff --git a/src/XML/xenc/AbstractDHKeyValueType.php b/src/XML/xenc/AbstractDHKeyValueType.php
new file mode 100644
index 00000000..66b60d81
--- /dev/null
+++ b/src/XML/xenc/AbstractDHKeyValueType.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SimpleSAML\XMLSecurity\XML\xenc;
+
+use DOMElement;
+use SimpleSAML\Assert\Assert;
+use SimpleSAML\XML\Exception\InvalidDOMElementException;
+use SimpleSAML\XML\Exception\MissingElementException;
+use SimpleSAML\XML\Exception\SchemaViolationException;
+use SimpleSAML\XML\Exception\TooManyElementsException;
+
+use function array_pop;
+
+/**
+ * A class implementing the xenc:AbstractDHKeyValueType element.
+ *
+ * @package simplesamlphp/xml-security
+ */
+abstract class AbstractDHKeyValueType extends AbstractXencElement
+{
+    /**
+     * DHKeyValueType constructor.
+     *
+     * @param \SimpleSAML\XMLSecurity\XML\xenc\XencPublic $xencPublic
+     * @param \SimpleSAML\XMLSecurity\XML\xenc\P|null $p
+     * @param \SimpleSAML\XMLSecurity\XML\xenc\Q|null $q
+     * @param \SimpleSAML\XMLSecurity\XML\xenc\Generator|null $generator
+     * @param \SimpleSAML\XMLSecurity\XML\xenc\Seed|null $seed
+     * @param \SimpleSAML\XMLSecurity\XML\xenc\PgenCounter|null $pgenCounter
+     */
+    final public function __construct(
+        protected XencPublic $xencPublic,
+        protected ?P $p = null,
+        protected ?Q $q = null,
+        protected ?Generator $generator = null,
+        protected ?Seed $seed = null,
+        protected ?PgenCounter $pgenCounter = null,
+    ) {
+        if ($p !== null || $q !== null || $generator !== null) {
+            Assert::allNotNull([$p, $q, $generator], SchemaViolationException::class);
+        } else {
+            Assert::allNull([$p, $q, $generator], SchemaViolationException::class);
+        }
+
+        if ($seed !== null || $pgenCounter !== null) {
+            Assert::allNotNull([$seed, $pgenCounter], SchemaViolationException::class);
+        } else {
+            Assert::allNull([$seed, $pgenCounter], SchemaViolationException::class);
+        }
+    }
+
+
+    /**
+     * Get the Public.
+     *
+     * @return \SimpleSAML\XMLSecurity\XML\xenc\XencPublic
+     */
+    public function getPublic(): XencPublic
+    {
+        return $this->xencPublic;
+    }
+
+
+    /**
+     * Get the P.
+     *
+     * @return \SimpleSAML\XMLSecurity\XML\xenc\P|null
+     */
+    public function getP(): ?P
+    {
+        return $this->p;
+    }
+
+
+    /**
+     * Get the Q.
+     *
+     * @return \SimpleSAML\XMLSecurity\XML\xenc\Q|null
+     */
+    public function getQ(): ?Q
+    {
+        return $this->q;
+    }
+
+
+    /**
+     * Get the Generator.
+     *
+     * @return \SimpleSAML\XMLSecurity\XML\xenc\Generator|null
+     */
+    public function getGenerator(): ?Generator
+    {
+        return $this->generator;
+    }
+
+
+    /**
+     * Get the Seed.
+     *
+     * @return \SimpleSAML\XMLSecurity\XML\xenc\Seed|null
+     */
+    public function getSeed(): ?Seed
+    {
+        return $this->seed;
+    }
+
+
+    /**
+     * Get the PgenCounter.
+     *
+     * @return \SimpleSAML\XMLSecurity\XML\xenc\PgenCounter|null
+     */
+    public function getPgenCounter(): ?PgenCounter
+    {
+        return $this->pgenCounter;
+    }
+
+
+    /**
+     * Initialize an DHKeyValue object from an existing XML.
+     *
+     * @param \DOMElement $xml
+     * @return static
+     *
+     * @throws \SimpleSAML\XML\Exception\InvalidDOMElementException
+     *   if the qualified name of the supplied element is wrong
+     * @throws \SimpleSAML\XML\Exception\MissingAttributeException
+     *   if the supplied element is missing one of the mandatory attributes
+     * @throws \SimpleSAML\XML\Exception\TooManyElementsException
+     *   if too many child-elements of a type are specified
+     */
+    public static function fromXML(DOMElement $xml): static
+    {
+        Assert::same($xml->localName, 'DHKeyValue', InvalidDOMElementException::class);
+        Assert::same($xml->namespaceURI, static::NS, InvalidDOMElementException::class);
+
+        $xencPublic = XencPublic::getChildrenOfClass($xml);
+        Assert::minCount($xencPublic, 1, MissingElementException::class);
+        Assert::maxCount($xencPublic, 1, TooManyElementsException::class);
+
+        $p = P::getChildrenOfClass($xml);
+        Assert::maxCount($p, 1, TooManyElementsException::class);
+
+        $q = Q::getChildrenOfClass($xml);
+        Assert::maxCount($q, 1, TooManyElementsException::class);
+
+        $generator = Generator::getChildrenOfClass($xml);
+        Assert::maxCount($generator, 1, TooManyElementsException::class);
+
+        $seed = Seed::getChildrenOfClass($xml);
+        Assert::maxCount($seed, 1, TooManyElementsException::class);
+
+        $pgenCounter = PgenCounter::getChildrenOfClass($xml);
+        Assert::maxCount($pgenCounter, 1, TooManyElementsException::class);
+
+        return new static(
+            array_pop($xencPublic),
+            array_pop($p),
+            array_pop($q),
+            array_pop($generator),
+            array_pop($seed),
+            array_pop($pgenCounter),
+        );
+    }
+
+
+    /**
+     * Convert this DHKeyValue object to XML.
+     *
+     * @param \DOMElement|null $parent The element we should append this DHKeyValue to.
+     * @return \DOMElement
+     */
+    public function toXML(DOMElement $parent = null): DOMElement
+    {
+        $e = $this->instantiateParentElement($parent);
+
+        $this->getP()?->toXML($e);
+        $this->getQ()?->toXML($e);
+        $this->getGenerator()?->toXML($e);
+        $this->getPublic()->toXML($e);
+        $this->getSeed()?->toXML($e);
+        $this->getPgenCounter()?->toXML($e);
+
+        return $e;
+    }
+}
diff --git a/src/XML/xenc/DHKeyValue.php b/src/XML/xenc/DHKeyValue.php
new file mode 100644
index 00000000..66ab7082
--- /dev/null
+++ b/src/XML/xenc/DHKeyValue.php
@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SimpleSAML\XMLSecurity\XML\xenc;
+
+/**
+ * A class implementing the xenc:DHKeyValue element.
+ *
+ * @package simplesamlphp/xml-security
+ */
+final class DHKeyValue extends AbstractDHKeyValueType
+{
+}
diff --git a/tests/XML/xenc/DHKeyValueTest.php b/tests/XML/xenc/DHKeyValueTest.php
new file mode 100644
index 00000000..7545a420
--- /dev/null
+++ b/tests/XML/xenc/DHKeyValueTest.php
@@ -0,0 +1,113 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SimpleSAML\XMLSecurity\Test\XML\xenc;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+use SimpleSAML\XML\DOMDocumentFactory;
+use SimpleSAML\XML\TestUtils\SchemaValidationTestTrait;
+use SimpleSAML\XML\TestUtils\SerializableElementTestTrait;
+use SimpleSAML\XMLSecurity\Utils\XPath;
+use SimpleSAML\XMLSecurity\XML\xenc\AbstractDHKeyValueType;
+use SimpleSAML\XMLSecurity\XML\xenc\AbstractXencElement;
+use SimpleSAML\XMLSecurity\XML\xenc\DHKeyValue;
+use SimpleSAML\XMLSecurity\XML\xenc\Generator;
+use SimpleSAML\XMLSecurity\XML\xenc\P;
+use SimpleSAML\XMLSecurity\XML\xenc\PgenCounter;
+use SimpleSAML\XMLSecurity\XML\xenc\Q;
+use SimpleSAML\XMLSecurity\XML\xenc\Seed;
+use SimpleSAML\XMLSecurity\XML\xenc\XencPublic;
+
+use function dirname;
+use function strval;
+
+/**
+ * Class \SimpleSAML\XMLSecurity\Test\XML\xenc\DHKeyValueTest
+ *
+ * @covers \SimpleSAML\XMLSecurity\XML\xenc\AbstractXencElement
+ * @covers \SimpleSAML\XMLSecurity\XML\xenc\AbstractDHKeyValueType
+ * @covers \SimpleSAML\XMLSecurity\XML\xenc\DHKeyValue
+ *
+ * @package simplesamlphp/xml-security
+ */
+#[CoversClass(AbstractXencElement::class)]
+#[CoversClass(AbstractDHKeyValueType::class)]
+#[CoversClass(DHKeyValue::class)]
+final class DHKeyValueTest extends TestCase
+{
+    use SchemaValidationTestTrait;
+    use SerializableElementTestTrait;
+
+    /**
+     */
+    public static function setUpBeforeClass(): void
+    {
+        self::$testedClass = DHKeyValue::class;
+
+        self::$schemaFile = dirname(__FILE__, 4) . '/resources/schemas/xenc-schema.xsd';
+
+        self::$xmlRepresentation = DOMDocumentFactory::fromFile(
+            dirname(__FILE__, 3) . '/resources/xml/xenc_DHKeyValue.xml',
+        );
+    }
+
+
+    /**
+     */
+    public function testMarshalling(): void
+    {
+        $xencPublic = new XencPublic('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $p = new P('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $q = new Q('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $generator = new Generator('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $seed = new Seed('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $pgenCounter = new PgenCounter('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+
+        $dhKeyValue = new DHKeyValue($xencPublic, $p, $q, $generator, $seed, $pgenCounter);
+
+        $this->assertEquals(
+            self::$xmlRepresentation->saveXML(self::$xmlRepresentation->documentElement),
+            strval($dhKeyValue),
+        );
+    }
+    /**
+     */
+    public function testMarshallingElementOrder(): void
+    {
+        $xencPublic = new XencPublic('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $p = new P('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $q = new Q('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $generator = new Generator('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $seed = new Seed('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+        $pgenCounter = new PgenCounter('/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=');
+
+        $dhKeyValue = new DHKeyValue($xencPublic, $p, $q, $generator, $seed, $pgenCounter);
+
+        // Marshall it to a \DOMElement
+        $dhKeyValueElement = $dhKeyValue->toXML();
+
+        $xpCache = XPath::getXPath($dhKeyValueElement);
+
+        // Test for an P
+        /** @var \DOMElement[] $pElements */
+        $pElements = XPath::xpQuery($dhKeyValueElement, './xenc:P', $xpCache);
+        $this->assertCount(1, $pElements);
+
+        // Test ordering of DHKeyValue contents
+        /** @var \DOMElement[] $dhKeyValueElements */
+        $dhKeyValueElements = XPath::xpQuery(
+            $dhKeyValueElement,
+            './xenc:P/following-sibling::*',
+            $xpCache,
+        );
+
+        $this->assertCount(5, $dhKeyValueElements);
+        $this->assertEquals('xenc:Q', $dhKeyValueElements[0]->tagName);
+        $this->assertEquals('xenc:Generator', $dhKeyValueElements[1]->tagName);
+        $this->assertEquals('xenc:Public', $dhKeyValueElements[2]->tagName);
+        $this->assertEquals('xenc:seed', $dhKeyValueElements[3]->tagName);
+        $this->assertEquals('xenc:pgenCounter', $dhKeyValueElements[4]->tagName);
+    }
+}
diff --git a/tests/resources/xml/xenc_DHKeyValue.xml b/tests/resources/xml/xenc_DHKeyValue.xml
new file mode 100644
index 00000000..68e0969f
--- /dev/null
+++ b/tests/resources/xml/xenc_DHKeyValue.xml
@@ -0,0 +1,8 @@
+<xenc:DHKeyValue xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
+  <xenc:P>/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=</xenc:P>
+  <xenc:Q>/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=</xenc:Q>
+  <xenc:Generator>/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=</xenc:Generator>
+  <xenc:Public>/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=</xenc:Public>
+  <xenc:seed>/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=</xenc:seed>
+  <xenc:pgenCounter>/CTj03d1DB5e2t7CTo9BEzCf5S9NRzwnBgZRlm32REI=</xenc:pgenCounter>
+</xenc:DHKeyValue>