Implementación de servicios de cómputo y seguridad : implementación de firmas electrónicas mediante Python con bibliotecas libres.

Abstract

This report details the development of a system for the implementation of electronic signatures using Python and open-source libraries. This component focuses on the creation of digital certificates to facilitate the digital signing of documents in applications such as Adobe Acrobat. The advanced capabilities of libraries available in the OpenSSL software community are leveraged to ensure document authentication and validation in the digital environment. The system not only meets rigorous security and legal standards, but also easily adapts to various professional and academic environments. The report begins with a detailed description of the system developed to implement electronic signatures. It explains how the system uses Python and open-source libraries, especially OpenSSL and the Cryptography library, to generate cryptographic keys, create digital certificates, and manage their export and renewal. The main objective is to provide a secure, efficient and easy to integrate solution for digital document signing. In the theoretical framework section, the foundations of asymmetric cryptography and electronic signatures are reviewed. It delves into the process of generating public and private keys, as well as the role of certification authorities (CA) in the issuance and validation of digital certificates. Relevant international regulations and standards are highlighted to guarantee the security and legality of electronic signatures. In the results section, the practical application of the developed system is presented. Examples of digitally signed PDF documents using the generated digital certificates are included. Screenshots illustrating the applied signatures are shown and the results of validation tests performed in Adobe Acrobat are discussed, emphasizing the authenticity and security of the implemented digital signatures. The conclusions summarize the main findings of the study and highlight the importance of implementing secure and effective electronic signatures in today's digital environment. The objectives achieved are reviewed and the contribution of the developed system to compliance with security and legality standards in the digital signing of documents is highlighted. Finally, recommendations are offered for those interested in using or expanding the developed system. It is suggested to explore new applications and contexts for the implementation of electronic signatures, as well as to continue improving the integration and security of the system in different platforms and environments for professional and academic use. This report provides a comprehensive and detailed view of the development and implementation of electronic signatures with Python and open-source libraries, demonstrating their usefulness and applicability in the modern digital era.