Multi-party business processes rely on the collaboration of various players in a decentralized setting. Blockchain technology can facilitate the automation of these processes, even in cases where trust among participants is limited. Transactions are stored in a ledger, a replica of which is retained by every node of the blockchain network. The operations saved thereby are thus publicly accessible. While this enhances transparency, reliability, and persistence, it hinders the utilization of public blockchains for process automation as it violates typical confidentiality requirements in corporate settings. In this paper, we propose MARTSIA: A Multi-Authority Approach to Transaction Systems for Interoperating Applications. MARTSIA enables precise control over process data at the level of message parts. Based on Multi-Authority Attribute-Based Encryption (MA-ABE), MARTSIA realizes a number of desirable properties, including confidentiality, transparency, and auditability. We implemented our approach in proof-of-concept prototypes, with which we conduct a case study in the area of supply chain management. Also, we show the integration of MARTSIA with a state-of-the-art blockchain-based process execution engine to secure the data flow.

MARTSIA: Enabling Data Confidentiality for Blockchain-Based Process Execution / Marangone, Edoardo; DI CICCIO, Claudio; Friolo, Daniele; Nemmi, EUGENIO NERIO; Venturi, Daniele; Weber, Ingo. - 14367:(2023), pp. 58-76. (Intervento presentato al convegno Enterprise Design, Operations, and Computing - 27th International Conference, EDOC 2023 tenutosi a Groningen, The Netherlands) [10.1007/978-3-031-46587-1_4].

MARTSIA: Enabling Data Confidentiality for Blockchain-Based Process Execution

Marangone Edoardo
;
Di Ciccio Claudio;Friolo Daniele;Nemmi Eugenio Nerio;Venturi Daniele;
2023

Abstract

Multi-party business processes rely on the collaboration of various players in a decentralized setting. Blockchain technology can facilitate the automation of these processes, even in cases where trust among participants is limited. Transactions are stored in a ledger, a replica of which is retained by every node of the blockchain network. The operations saved thereby are thus publicly accessible. While this enhances transparency, reliability, and persistence, it hinders the utilization of public blockchains for process automation as it violates typical confidentiality requirements in corporate settings. In this paper, we propose MARTSIA: A Multi-Authority Approach to Transaction Systems for Interoperating Applications. MARTSIA enables precise control over process data at the level of message parts. Based on Multi-Authority Attribute-Based Encryption (MA-ABE), MARTSIA realizes a number of desirable properties, including confidentiality, transparency, and auditability. We implemented our approach in proof-of-concept prototypes, with which we conduct a case study in the area of supply chain management. Also, we show the integration of MARTSIA with a state-of-the-art blockchain-based process execution engine to secure the data flow.
2023
Enterprise Design, Operations, and Computing - 27th International Conference, EDOC 2023
multi-authority attribute based encryption; distributed ledger technology; interplanetary file system
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
MARTSIA: Enabling Data Confidentiality for Blockchain-Based Process Execution / Marangone, Edoardo; DI CICCIO, Claudio; Friolo, Daniele; Nemmi, EUGENIO NERIO; Venturi, Daniele; Weber, Ingo. - 14367:(2023), pp. 58-76. (Intervento presentato al convegno Enterprise Design, Operations, and Computing - 27th International Conference, EDOC 2023 tenutosi a Groningen, The Netherlands) [10.1007/978-3-031-46587-1_4].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1691957
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