Generalize the RSig function
Created by: claucece
As we are currently implementing the revision number 2 of the OTRv4 specification, we need to include a consistent way of using the RSig function.
Please, refer to the "Ring Signature Authentication" section of the OTRv4 spec and issue 99 of it.
- Check how RSig and RVerf are working on the auth.c file.
- Check if those functions can be generalized and do so if needed.
- Check if this can be part of otrv4 toolkit.
- Generalize it for the Prekey Server as well.
- Is this part of the otrv4 toolkit?