signer.Signer(secret_key, salt=None, sep=’.’, key_derivation=None, di- gest_method=None, algorithm=None) This class can sign and unsign bytes, validating the signature provided. Salt can be used to namespace or re-using a salt value across different parts of your application where the same signed value in one part can mean something different in another part is a security risk. See The Salt for an example example of what the salt is doing and how you can utilize it. New in version 0.18: algorithm was added as an argument to the class constructor. New in version 0.14: key_derivation and digest_method were added

@enduml TODO: FIXME PlantUML Language Reference Guide (1.2023.11) 303 / 550 14 SALT (WIREFRAME) 14 Salt (Wireframe) Salt is a subproject included in PlantUML that may help you to design graphical interface simple and sample windows. You can use either @startsalt keyword, or @startuml followed by a line with salt keyword. 14.1 Basic widgets A window must start and end with brackets. You can then define: • Button @endsalt Note: PlantUML Language Reference Guide (1.2023.11) 304 / 550 14.3 Open, close droplist 14 SALT (WIREFRAME) • the dot (.) to fill up vertical space; • the last line of space (" ") to make the

legend end legend * r ** d1 ** d2 @endwbs TODO: DONE [Corrected on V1.2020.17] 15.7.13 Wireframe (SALT) @startsalt header some header PlantUML Language Reference Guide (1.2020.23) 207 / 310 15.8 Appendice: is only good for Sequence diagram • title, caption and legend are good for all diagrams except for salt diagram TODO: FIXME ￿ • Now (test on 1.2020.18-19) header, footer are not good for all other diagrams legend end legend * r ** d1 ** d2 @endwbs 15.8.13 Wireframe (SALT) TODO: FIXME Fix all (title, caption, legend, header, footer) for salt. TODO: FIXME @startsalt