Implementation of the paper: "David Pointcheval, Olivier Sanders: Short Randomizable Signatures" published in: Proceedings of the RSA Conference on Topics in Cryptology 2016, which is available through this link: https://dl.acm.org/doi/10.1007/978-3-319-29485-8_7

Description:

This file implements the four schemes:
- Single Message Signature
- Implemented in the class PS_SigSingleMessage
- Tested in the function single_message_main
- Multi Messages Signature
- Implemented in the class PS_SigMultiMessage
- Tested in the function multi_message_main
- Blinded Single Message Signature
- Implemented in the class PS_BlindSingleMessageSig
- Tested in the function blinded_single_message_main
- Blinded Multi Messages Signature
- Implemented in the class PS_SigMultiMessage
- Tested in the function blinded_multi_message_main