# Password Hashing for Windows When creating a new Phoenix project, you can add authentication by running: ```bash mix phx.gen.auth ``` If you do this on macOS or Linux, then Phoenix will use `bcrypt_elixir`. If you do this on a Windows machine, then it will use `pbkdf2_elixir`instead. You can find more on the pros and cons of choosing a hash system [here](https://hexdocs.pm/phoenix/Mix.Tasks.Phx.Gen.Auth.html#module-password-hashing). Petal Pro has been pre-generated with `bcrypt_elixir` - if you're on a Windows machine, you can switch by applying this recipe. This is much more convenient than trying to compile bcrypt on a Windows machine! ### How to use This recipe is available for version `1.8.0` and above. #### New projects You can choose to check out the branch or cherry pick it. ``` git clone https://github.com/petalframework/petal_pro.git cd petal_pro git checkout recipes//win-pass-hash ``` #### Cherry pick Follow the [cherry-pick instructions](/petal-pro-documentation/v2.2.0/recipes/how-to-apply-a-recipe-with-git-cherry-pick.md) with the branch `recipes//win-pass-hash`. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.petal.build/petal-pro-documentation/v2.2.0/recipes/password-hashing-for-windows.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.