Refactor XOR CSRF Token Encoding into Separate Encoder Class with Unit Tests #17969
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Moved XOR-based CSRF token encoding/decoding logic into a new public class `XorCsrfTokenEncoder` that implements the `CsrfTokenEncoder` interface. This improves testability, readability, and separation of concerns. - Created `CsrfTokenEncoder` interface to define encoding/decoding contract - Implemented `XorCsrfTokenEncoder` with secure random masking logic - Updated `XorCsrfTokenRequestAttributeHandler` to delegate to the encoder - Added support for injecting custom `SecureRandom` instance - Preserved existing behavior and encoding mechanism This refactor enables easier unit testing and future extensibility. Signed-off-by: Cheol Jeon <nieuwmijnleven@outlook.com>
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Description
This PR refactors the XOR-based CSRF token encoding and decoding logic out of the XorCsrfTokenRequestAttributeHandler class into a new dedicated class named XorCsrfTokenEncoder.
Key Changes
Extracted XOR encode/decode logic into the XorCsrfTokenEncoder class with public methods
Updated XorCsrfTokenRequestAttributeHandler to delegate encoding and decoding to the new encoder
Introduced a CsrfTokenEncoder interface to define the encoding/decoding contract
Added comprehensive unit tests for XorCsrfTokenEncoder to ensure reliability
Supported injection of a custom SecureRandom instance for improved flexibility
Preserved existing behavior and encoding mechanism
This refactor improves code modularity and testability, making maintenance easier and future enhancements more straightforward.
Closes #17968