Message-Level Encryption

Message-Level Encryption (MLE)
enables you to store information or communicate with other parties while helping to prevent uninvolved parties from understanding the stored information. MLE is optional and supported only for payments services.
Before configuring MLE in the module, ensure you have created the .p12 certificate and securely stored the password. This certificate is required to authenticate and encrypt messages.
The following steps are required for MLE
Key Directory Path
The path to the directory where you have stored the .p12 certificate
Key File Name
The name of your .p12 certificate
Key Password
The password to the .p12 you set when creating the certificate
Key Alias
Enter the .p12 certificate alias
Enable Message-Level Encryption
Turn MLE on
See
Create a P12 Certificate
in the Getting Started with REST Developer Guide. for guidance on how to create a .p12 certificate.