Storing authentication data in repositories has become simpler with a new encryption method. To use this method, first generate a 22 character passphrase using `pwgen` and then encrypt your secret file using `gpg`. The encrypted file can be stored in the repository without compromising security. This solution is particularly useful for projects that rely on Firebase services, where authentication data is typically stored in a sensitive file called `google-services.json`. Instead of uploading this file to Bitrise or downloading it during the build process, users can now store the encrypted version in their repository and decrypt it using the `Decrypt file step` on Bitrise. This approach simplifies the process of storing sensitive data while maintaining security.