Desarrollo de un prototipo para firma digital de archivos xml mediante tecnología blockchain: garantizando integridad y autenticidad de los datos

Abstract

Abstract: In this degree work, the application based on Blockchain technology is proposed as a prototype for signing XML documents in digital environments, a way to guarantee the authenticity and integrity of the data contained in the XML file is a digital signature, without this digital signature The XML data file may be subject to manipulation or alteration of data contained in the XML file. With this prototype, an alternative use is proposed compared to centralized digital signing. The tools that allow digital signing in the XML document are addressed. Each of the functionalities and components that make it up are described. The web application is developed and the web3 library is used to interact with the Blockchain, to generate the unique token that identifies the digital signature in the XML document through the decentralized network. The application will allow you to sign the XML document, check if an XML document is digitally signed and its data has not been altered by validating the digital signature inserted in the XML document. XML documents are very useful for exchanging data between disparate systems . The development has been done using the Laravel framework, where the PHP language predominates, with the web3 library for PHP for the interaction of XML documents with the Blockchain decentralized network. The prototype generates an XML document from a data form, digitally signs the generated XML document, the generated digital signature is published in a node of the decentralized Blockchain network, in addition to this the prototype has a digital signature validator of the document XML.