- Tytuł:
- Privacy preservation for transaction initiators: stronger key image ring signature and smart contract-based framework
- Autorzy:
-
Odoom, Justice
Huang, Xiaofang
Danso, Samuel
Nyarko, Benedicta Nana Esi - Powiązania:
- https://bibliotekanauki.pl/articles/27312881.pdf
- Data publikacji:
- 2023
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
- Tematy:
-
blockchain
double spending
privacy
ring signature
smart contract
transaction initiator
lightweight - Opis:
- Recently, blockchain technology has garnered a great deal of support; however, an attenuating factor to its global adoption in certain use cases is privacypreservation (owing to its inherent transparency). A widely explored cryptographic option to address this challenge has been a ring signature that, aside from its privacy guarantee, must be double-spending resistant. In this paper, we identify and prove a catastrophic flaw for double-spending attacks in a lightweight ring signature scheme and proceed to construct a new fortified commitment scheme that uses a signer’s entire private key. Subsequently, we compute a stronger key image to yield a double-spending-resistant signature scheme that is solidly backed by formal proof. Inherent in our solution is a novel, zero-knowledge-based, secure, and cost-effective smart contract for public key aggregation. We test our solution on a private blockchain as well as a Kovan testnet along with a performance analysis that attests to its efficiency and usability – and, we make the code publicly available on GitHub.
- Źródło:
-
Computer Science; 2023, 24 (1); 75--96
1508-2806
2300-7036 - Pojawia się w:
- Computer Science
- Dostawca treści:
- Biblioteka Nauki
Artykuł