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Published Jun. 30, 2025

How to change the number of digits in the CSRF token parameter "p_auth

Written By

Shimada Taro

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Issue

  • Can I change the number of digits in the CSRF token parameter "p_auth"?

Environment

  • DXP 7.0+

solution

  • The number of digits of the relevant parameter is controlled by the following property, which can be changed.
    However, as described in the property description, performance effects may occur as tokens become longer.
    https://github.com/liferay/liferay-portal/blob/master/portal-impl/src/portal.properties#L3779-L3785
  • This parameter is only aauthorizedtoken and will not function withoutauthentication status.
    The token is invalidated when the session expires or when the user logs out.
    Also, attempts to reuse past tokens will result in an authentication error.

    Since this parameter only works after authentication, it is recognized that the default setting has no particular effect on security.
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