# New Functionality for Moodle E-Learning Platform: Files Communication by Chat Window
## 1 Introduction
[9], they set out to achieve many goals, such as reducing the processing time for transferring files to the other party and reducing overall expenses, as files are only transferred through the blockchain network without the need for files to be uploaded and downloaded to the drive. Maximum security is achieved by using an important algorithm that takes into account a critical part of the cryptography field to robustly encrypt files. The latter ensures that no individual, except the receiver, can access the files. Also, sufficient speed was achieved when transferring files, compared to other similar environments based on the manipulation of calculations with references. Another study by [PERSON] & [PERSON] et al. [10] set out to find a secure file transfer system to reliably protect and transfer their sensitive, business-critical data. Secure file transfer is a method of sharing data through a secure and reliable delivery method. Cryptography is a technique they used to secure information and communication in the presence of third parties. They used this technique to ensure that only those people to whom the intended information was addressed could read it. Thus, to improve the security process for storing and sharing data, they created a web application that uses a cryptographic approach to secure user data. They were also able to improve the proposed algorithm for encrypting and decrypting larger files. Push notifications and shareable links were also added that will expire after a set time. In addition, they were able to add other authentications, such as GitHub and Twitter. Another study by [PERSON] et al. [11] aimed to reveal teachers' perceptions of online platforms such as Google Classroom and WhatsApp used during the COVID-19 pandemic. This research applies the qualitative descriptive method and involves English teachers from Bitung, a growing port and city in North Sulawesi in eastern Indonesia, as the research respondents. The data were obtained from semi-structured interviews. The data was then analyzed according to [PERSON] and [PERSON] triangulation. They concluded that teachers perceive Google Classroom and the WhatsApp application from a positive perspective. They think that both platforms have made a good contribution to the learning process. Teachers need to be able to choose the best platforms for their virtual learning, as the types of digital platform are diverse. These are considered effective ways for teachers to keep in touch with students and conduct online teaching, including sending videos, conducting group chats,and organizing video conferences. The fourth study, by [PERSON] et al. [12] observed that in the online learning environment, much of the learning is self-directed and there are generally fewer opportunities to receive help in real time. Email and discussion forums are the most common ways to seek help in these environments. The study explored students' perceptions of the use of live chat technology for seeking academic help online in higher education, with a focus on comparing students' online and blended perspectives. The implications of this study are that it demonstrated the effectiveness of live chat as an online tool for seeking help in higher education between teacher and student. The tool has been well-received by both online and blended learners, especially for its ability to provide help instantly and conveniently, in real time. As an online, synchronous, private help-seeking tool between students and teachers, these findings provide a strong recommendation for the use of live chat in higher education. Collectively, these studies converge on the challenges of communication as well as the sending of documents between learners while maintaining a high level of security on e-learning platforms. They identify complex problems and propose innovative solutions to improve the learning process.