Implementation of RSA 2048-bit and AES 128-bit for Secure e-learning web-based application

E-learning systems today focuses on wide accessibility which is relatively contradictive to security. But as the cyber landscape has changed, so is the cyber security threat that follows. Security is needed to prevent from cyber threat such as data theft, modification, and fabrication, especially in a web-based environment. In this research, RSA 2048-bit algorithm, AES 256-bit and SHA 256 will be implemented in PHP and Javascript programming. Secure Electronic Learning System (SELS) application is designed to accommodate security services, such as confidentiality, integrity, authentication, and non-repudiation. Encryption to provide confidentiality services in file exchange process. Digital signature used to provide integrity, authentication, and non-repudiation in the access control and file exchange processes. Moreover, application can give information about file modification with notification to users. We demonstrated the implementation of cryptography in SELS can prevent data theft, illegal access, data modification or fabrication and is proven on the test.