diff --git a/scm-core/src/main/java/sonia/scm/xml/EncryptionUtil.java b/scm-core/src/main/java/sonia/scm/xml/EncryptionUtil.java
new file mode 100644
index 0000000000..43cebc8d68
--- /dev/null
+++ b/scm-core/src/main/java/sonia/scm/xml/EncryptionUtil.java
@@ -0,0 +1,51 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.xml;
+
+import com.google.common.base.Strings;
+import sonia.scm.security.CipherUtil;
+
+
+public class EncryptionUtil {
+
+  private static final String PREFIX = "{enc}";
+
+  public static String decrypt(String value) {
+    if (!value.startsWith(PREFIX)) {
+      //Return value if not encrypted yet
+      return value;
+    }
+
+    return CipherUtil.getInstance().decode(value.substring(PREFIX.length()));
+  }
+
+  public static String encrypt(String value) {
+    return PREFIX.concat(CipherUtil.getInstance().encode(value));
+  }
+
+  public static boolean isEncrypted(String value) {
+    return !Strings.isNullOrEmpty(value) && value.startsWith(PREFIX);
+  }
+}
diff --git a/scm-core/src/main/java/sonia/scm/xml/XmlEncryptionAdapter.java b/scm-core/src/main/java/sonia/scm/xml/XmlEncryptionAdapter.java
new file mode 100644
index 0000000000..f24a9ce589
--- /dev/null
+++ b/scm-core/src/main/java/sonia/scm/xml/XmlEncryptionAdapter.java
@@ -0,0 +1,48 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.xml;
+
+import javax.xml.bind.annotation.adapters.XmlAdapter;
+
+public class XmlEncryptionAdapter extends XmlAdapter<String, String> {
+
+  @Override
+  public String marshal(String v) {
+    if (!EncryptionUtil.isEncrypted(v)) {
+      v = EncryptionUtil.encrypt(v);
+    }
+
+    return v;
+  }
+
+  @Override
+  public String unmarshal(String v) {
+    if (EncryptionUtil.isEncrypted(v)) {
+      v = EncryptionUtil.decrypt(v);
+    }
+
+    return v;
+  }
+}
diff --git a/scm-core/src/test/java/sonia/scm/xml/EncryptionUtilTest.java b/scm-core/src/test/java/sonia/scm/xml/EncryptionUtilTest.java
new file mode 100644
index 0000000000..57db6b8075
--- /dev/null
+++ b/scm-core/src/test/java/sonia/scm/xml/EncryptionUtilTest.java
@@ -0,0 +1,67 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.xml;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class EncryptionUtilTest {
+
+  private final static String API_TOKEN = "113bb79d12c179301b93e9ff1ad32181a0";
+
+  @Test
+  void shouldEncrypt() {
+    String encryptedToken = EncryptionUtil.encrypt(API_TOKEN);
+
+    assertThat(API_TOKEN).isNotEqualTo(encryptedToken);
+    assertThat(encryptedToken).startsWith("{enc}");
+  }
+
+  @Test
+  void shouldReturnDecryptedApiToken() {
+    String encryptedToken = EncryptionUtil.encrypt(API_TOKEN);
+    String decryptedToken = EncryptionUtil.decrypt(encryptedToken);
+
+    assertThat(decryptedToken).isEqualTo(API_TOKEN);
+  }
+
+  @Test
+  void shouldReturnApiTokenIfNotEncrypted() {
+    String token = EncryptionUtil.decrypt(API_TOKEN);
+
+    assertThat(token).isEqualTo(API_TOKEN);
+  }
+
+  @Test
+  void shouldCheckIfTokenIsEncrypted() {
+    String encryptedToken = EncryptionUtil.encrypt(API_TOKEN);
+    boolean encrypted = EncryptionUtil.isEncrypted(encryptedToken);
+    boolean notEncrypted = EncryptionUtil.isEncrypted(API_TOKEN);
+
+    assertThat(encrypted).isEqualTo(true);
+    assertThat(notEncrypted).isEqualTo(false);
+  }
+}
diff --git a/scm-core/src/test/java/sonia/scm/xml/XmlEncryptionAdapterTest.java b/scm-core/src/test/java/sonia/scm/xml/XmlEncryptionAdapterTest.java
new file mode 100644
index 0000000000..a185878151
--- /dev/null
+++ b/scm-core/src/test/java/sonia/scm/xml/XmlEncryptionAdapterTest.java
@@ -0,0 +1,60 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020-present Cloudogu GmbH and Contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package sonia.scm.xml;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class XmlEncryptionAdapterTest {
+
+  private final static String API_TOKEN = "113bb79d12c179301b93e9ff1ad32181a0";
+
+  private final XmlEncryptionAdapter xmlEncryptionAdapter = new XmlEncryptionAdapter();
+
+  @Test
+  void shouldEncryptTokenOnMarshalling() {
+    String marshalledToken = xmlEncryptionAdapter.marshal(API_TOKEN);
+
+    assertThat(marshalledToken).isNotEqualTo(API_TOKEN);
+    assertThat(marshalledToken).startsWith("{enc}");
+  }
+
+  @Test
+  void shouldUnmarshallEncryptedToken() {
+    String marshalledToken = xmlEncryptionAdapter.marshal(API_TOKEN);
+
+    String unmarshalledToken = xmlEncryptionAdapter.unmarshal(marshalledToken);
+
+    assertThat(unmarshalledToken).isEqualTo(API_TOKEN);
+  }
+
+  @Test
+  void shouldUnmarshallNotEncryptedToken() {
+    String unmarshalledToken = xmlEncryptionAdapter.unmarshal(API_TOKEN);
+
+    assertThat(unmarshalledToken).isEqualTo(API_TOKEN);
+  }
+}