If the directory/file paths specified in this guide do not exist in your WSO2 product, see Directory Structure of WSO2 Products to locate the paths applicable to your product.
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The capability of using symmetric encryption was introduced by the Carbon 4.4.3 release. Therefore, note that this feature is only applicable to products that are based on Carbon 4.4.3 or later versions.

WSO2 Carbon-based products use asymmetric encryption by default as explained in the previous section. From Carbon 4.4.3 onwards, you have the option of switching to symmetric encryption in your WSO2 product. Using symmetric encryption means that a single key will be shared for encryption and decryption of information. 

Follow the steps given below to enable symmetric encryption.

  1. Open the carbon.xml file from the <PRODUCT_HOME>/repository/conf directory.
  2. Add the following properties:

    • The IsEnabled property is used to set symmetric encryption to 'true' or 'false'.

    • The Algorithm property specifies the symmetric key algorithm used.
    • The SecureVaultAlias property is used to specify the secret alias if secure vault has been used to encrypt the secret key.
  3. Create a file named 'symmetric-key.properties' in the <PRODUCT_HOME>/repository/resources/security folder and enter the symmetric key using the symmetric.key property. See the following example where a plain text key is entered in the symmetric-key.properties file:


    If Secure Vault has been used for encrypting the symmetric key, this value will be replaced by the secret alias as shown below. For detailed instructions on how the secret key can be encrypted using Secure Vault, see Encrypting Passwords with Cipher Tool.

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