Based on the provided knowledge sources, I cannot recommend issuing your own CSRF cookie after obtaining a Kratos browser client-side flow session. Ory Kratos already handles CSRF protection for its flows, and attempting to issue your own CSRF cookie could interfere with the built-in security measures. Instead, when using Ory Kratos for client-side (AJAX) browser flows, the proper approach is to use the CSRF token provided by Kratos. Here's how it works: 1. When initializing a flow (such as login or registration), Kratos sets a CSRF cookie automatically. This is evident from the API response headers, as shown in the [login flow documentation](https://www.ory.sh/docs/kratos/self-service/flows/user-login#login-for-client-side-ajax-browser-clients):

< set-cookie: aHR0cHM6Ly9wbGF5Z3JvdW5kLnByb2plY3RzLm9yeWFwaXMuY29tL2FwaS9rcmF0b3MvcHVibGlj_csrf_token=UlKMcLe00G8B9GjC7D1I5rvQ6P79Q0YpzKb4lo7uLtw=; Path=/api/kratos/public; Domain=<http://playground.projects.oryapis.com|playground.projects.oryapis.com>; Max-Age=31536000; HttpOnly; Secure; SameSite=None

2. The flow response also includes a CSRF token in the UI nodes, which you should include in your form submission. This token is typically found in a hidden input field named

csrf_token

, as shown in the [login submission documentation](https://www.ory.sh/docs/kratos/bring-your-own-ui/custom-ui-basic-integration#submit-login-flow):

json    {      "type": "input",      "group": "default",      "attributes": {        "name": "csrf_token",        "type": "hidden",        "value": "fEbwhQFcC/q5AkS9RsdqiX65Az7PTrC1tecZH4wNevAV7N/jSvVron06mYYs7y5HVedX/W2QbqGx3KvJpsvhNg==",        "required": true,        "disabled": false,        "node_type": "input"      },      "messages": [],      "meta": {}    }

3. When submitting the flow, you need to include both the CSRF cookie and the CSRF token from the form. For browser applications, you must send all cookies and include the CSRF token in the request body, as stated in the [submit login flow documentation](https://www.ory.sh/docs/kratos/bring-your-own-ui/custom-ui-basic-integration#submit-login-flow). By following this approach, you're using Kratos' built-in CSRF protection mechanism, which is designed to work securely with its flows. Issuing your own CSRF cookie is not necessary and could potentially cause conflicts or security issues. If you're experiencing specific problems with CSRF protection in your implementation, it would be better to troubleshoot those issues rather than trying to implement your own CSRF mechanism on top of Kratos.

I understand that you want to implement your own CSRF protection for requests unrelated to Kratos, while allowing Kratos to handle its own CSRF protection for its flows. This approach is reasonable, as long as you ensure that your custom CSRF implementation doesn't interfere with Kratos' built-in security measures. When implementing your own CSRF protection for non-Kratos requests, keep the following points in mind: 1. Separate concerns: Ensure that your CSRF protection mechanism is clearly separated from Kratos-related flows and endpoints. This will help prevent any potential conflicts. 2. Cookie naming: Choose a distinct name for your CSRF cookie to avoid any collision with Kratos' cookies. As shown in the [login flow documentation](https://www.ory.sh/docs/kratos/self-service/flows/user-login#login-for-client-side-ajax-browser-clients), Kratos uses a specific format for its CSRF cookie:

aHR0cHM6Ly9wbGF5Z3JvdW5kLnByb2plY3RzLm9yeWFwaXMuY29tL2FwaS9rcmF0b3MvcHVibGlj_csrf_token

Make sure your custom CSRF cookie name is clearly different. 3. Cookie attributes: When setting your CSRF cookie, consider using secure attributes similar to those used by Kratos. For example, set

HttpOnly

,

Secure

, and an appropriate

SameSite

policy. 4. Token generation and validation: Implement a robust method for generating and validating CSRF tokens for your non-Kratos requests. You can refer to the [OWASP CSRF Prevention Cheat Sheet](https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html) for best practices. 5. Consistent usage: Ensure that your custom CSRF protection is consistently applied to all relevant non-Kratos endpoints in your application. By implementing your own CSRF protection for non-Kratos requests while allowing Kratos to handle its own security, you can maintain a clear separation of concerns and ensure that both parts of your application are protected against CSRF attacks. Remember to thoroughly test your implementation to verify that it works correctly alongside Kratos and doesn't introduce any security vulnerabilities or usability issues.