---
title: Select WS-Trust encryption algorithm
description: This step is only necessary if WS-Trust is being used.
component: dynamicscrm
page_id: dynamicscrm:pingfederate_configuration:pf_dynamicscrm_integration_select_ws_trust_encryption_algorithm
canonical_url: https://docs.pingidentity.com/integrations/dynamicscrm/pingfederate_configuration/pf_dynamicscrm_integration_select_ws_trust_encryption_algorithm.html
revdate: July 3, 2024
section_ids:
  about-this-task: About this task
  steps: Steps
---

# Select WS-Trust encryption algorithm

## About this task

|   |                                                        |
| - | ------------------------------------------------------ |
|   | This step is only necessary if WS-Trust is being used. |

## Steps

1. On the **Select XML Encryption Certificate** screen, select **AES-256** as the Block Encryption Algorithm.

2. Select the encryption certificate for Dynamics CRM claims encryption from the drop-down list.

   This is the same encryption certificate used in [Dynamics CRM configuration](../pf_dynamicscrm_integration_dynamics_crm_configuration.html).

   |   |                                                                                                   |
   | - | ------------------------------------------------------------------------------------------------- |
   |   | If AES-256 is unavailable, make sure the high-level encryption libraries were imported correctly. |