Update X509 Certificate Authenticator Docs

[ThaminduDilshan]

Document issue type

Type/Improvement (Suggest changes to enhance the clarity, usability, or accuracy of existing content)

Description

The x509 certificate documentation at [1] seems to be missing some steps and requires to be updated. The following points can be addressed as an improvement.

• The sub step c) of step 7 asks to add two properties to a openssl config file.
  • However the two file locations given can be changed based on the openssl installation method and is also OS dependent.
  • Also the file could be read only based on the OS (ex: the openssl.cnf file is read only in Mac OS) and would be better ask to take a copy of the file and edit it.
  • Also the property defined as x509\_extensions has a typo and could also be different based on the openssl installation method.
• Also instead of adding the certificate to a new keystore, it can be added to the default truststore of identity server. However need to clarify whether this is a mandatory step.
• Step 3 and 4 of "Configure the Authentication Endpoint" seems to be optional. However the documentation could be bit misleading.
• The requirement to perform "Add a claim mapping for the certificate" step depend on the choice for the above point.
• The browser steps given under "Import certificate" seems to be outdated with the latest browser versions. Need to add the correct steps or point to a browser documentation.
• Application registration steps under "Register an app" section needs to be updated as per the new UI.

[1] https://is.docs.wso2.com/en/latest/guides/authentication/mfa/add-x509-login/

Version

IS 7.1.0

[ThaminduDilshan]

Need to address the points mentioned in #21293 as well

[nilasini]

@ThaminduDilshan @himeshsiriwardana are we good to close this issue?

[himeshsiriwardana]

@ThaminduDilshan @himeshsiriwardana are we good to close this issue?

The PR is currently under review. Will close this once it is done.