How to configure liferay to invoke web services with Digest Auth

Issue

• How to configure Liferay to invoke web services with Digest Auth and use it in a client. As example we'll use POSTMAN
  

Environment

• Liferay DXP 7.1+

Resolution

• As example, we are going to configure the access to http://localhost:8080/api/jsonws/company/get-companies method in POSTMAN:
  
  1. Configure Digest Authentication:
     • System Settings > API Authentication > Digest Authentication
       • Force Digest Authentication: True
       • Enabled: True
       • Hosts Allowed: n/a
       • URLs Excludes: n/a
       • URLs Includes: /api/jsonws/company/*
  2. Configure a new System Access Policy:
     • Name: COMPANY_ACCESS
     • Enabled: true
     • Default: false
     • Title: COMPANY_ACCESS
     • Allowed Service Signatures:
       • Service Class:
       • Method Name: n/a
  3. Open a session in POSTMAN:
  4. Create a new request this way (select Digest Auth and add the user and pass)
  5. Uncheck the "Yes disable retrying" option
  6. Test that results are returned: