‘WOTSwana: The generalization of Sleeve’ on ICISC 2022
Published in 25th Annual International Conference on Information Security and Cryptology, 2022
Recommended citation: Mario Larangeira. (2022). "Reputation at Stake! A Trust Layer overDecentralized Ledger for Multiparty Computation and Reputation-Fair Lottery." ICISC 2022. http://www.icisc.org/mainp
We had two accepted works for ICISC 2022.
One is a my first single-author paper (YES!) . The other is WOTSwana which is the generalization of Tweakable Sleeve and the original Sleeve.
There are several improvements in this work. The one that draws more attention is that our construction (in fact we have two constructions) allows multiple proofs of ownership. The original inspiration for Sleeve is to add an ‘trick’ in case the secret key is leaked, and this trick allows you to prove that you are the rightful owner to the leaked key. The previous works allow you to do it only once. It was a single shot. WOTSwana allows you to do it multiple times without reveling the secret ECDSA key.
There is a funny story that explains the name of the scheme and it is related to the post quantum signature scheme we rely for our constructions: the WOTS+. While in the first steps of development of the scheme we considered to submit the work to a conference in Africa. Thus we brainstormed a name that reminds an African country: Botswana.
Unfortunately we missed the deadline, however the name stuck.
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