Modelo computacional para cadeia de custódia digital: identificação e coleta com base em tecnologia blockchain

Abstract

Legal actions in relation to the digital chain of custody become increasingly important considering the emergence of the number of cybercrime activities. In a forensic investigation it is necessary to follow several laws in order to guarantee procedural transparency and the right of defense of the parties, in this way, the chain of custody is a procedure to carry out the documentation of evidence in chronological events. It is possible to verify that there are already several initiatives related to the physical control of evidence, however, in the cases of crimes, logical data are often crucial for the resolution of a conflict or the correct application of the penalty provided for in the legislation. The General Data Protection Law (LGPD) harmonizes and regulates the protection of privacy and personal data in Brazil. It was inspired by the discussions that culminated in data protection according to the European Union (GDPR) and aims not only to give people greater control over their data, but to deal with the most innovative business models based on the use of personal data. The transition to electronic documentation supported by blockchain technology improves the readability, authenticity and usefulness of documents and therefore improves communication between stakeholders within due process. This work gives an overview of the extent to which problems and challenges are faced in the digital chain of custody and proposes a solution for identifying digital evidence based on blockchain technology.