Tesis y Tesistas 2020 - Postgrado - Fac. de Informática - UNLP

MAESTRÍA
redes de datos
Mg. Hugo Ortega
e-mail
hortega@herrera.unt.edu.ar
Advisor
Dr. Patricia Alejandra Bazán
Codirector
Mg. Nicolás del Río
Thesis defense date
October 2, 2020
SEDICI
http://sedici.unlp.edu.ar/handle/10915/110076
Crypto-Events. Towards a model
that guarantees in perpetuity the
integrity of the information
registered for audit purposes,
by the electronics of a data network
Keywords: Blockchain, Ledger, Event Log, Hyperledger Fabric
Motivation
The integrity of the information contained in an event log,
originating from the components of a network, conditions
the success of an audit. In all cases, the data provided by
the event logs are critical when proving criminal acts.
The increased use of cryptocurrencies has generated a lot
of interest in its underlying technology, namely Blockchain.
The central component in a Blockchain is a distributed
and shared ledger. A ledger comprises a series of blocks,
which in turn contain a series of transactions. All nodes in
a blockchain network store an identical copy of the ledger.
The main goal of designing a blockchain-based solution is to
preserve the integrity and security of the ledger. Therefore,
there are usually built-in validation mechanisms that take
advantage of cryptography to ensure the validity of incoming
blocks before committing them to the general ledger.
This paper aims to contribute to the maintenance of the
integrity over time of the information contained in the event
logs of the components of a network. Hyperledger Fabric, an
open-source and authoritative blockchain platform, which is
experiencing constant growth and has great support from
the community, is proposed to implement a solution.
Thesis contributions
Blockchain is a technology that has changed the paradigm
of data protection and the traceability of transactions
through its characteristics: immutability, transparency,
cryptographic encryption techniques, etc. From this new
set of knowledge, it is possible to develop decentralized
solutions for data protection.
Based on the objective of preserving the integrity of the audit
records, this thesis develops the following contributions:
first, the design of a formal model. This model describes in
deep the process of capturing and storing the audit records
of a network, using a data structure based on blockchains.
Second, the development of the effective implementation
of it, using free-to-use programming language and opensource
blockchain tools.
Finally, the resulting documentation written in Spanish is
considered an extra contribution to undergraduate students,
who, out of pragmatism, often prefer to do the first reading
on a subject in Spanish, especially if it is unknown. A
detailed description of the Hyperledger Fabric open-source
platform was developed, including components, operation,
and the relationship between them.
Future Research Lines
From this work, the following lines of research are suggested
that will help the evolution of the proposed solution:
• Develop an improved prototype that implements record
rotation with the goal of lowering storage costs
• Investigate the implementation of Open Authorization
(OAuth) systems for the identification of nodes; this will
favor the performance of the system.
• Evaluate the possibility of interacting with another DLT
platform using the “Interledger Protocol” (ILP is a set
of open protocols to send payments through different
accounting books). Hyperledger implements ILP through the
Hyperledger Quilt tool.
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