Protokol Keamanan Dokumen Digital pada Sistem E-Procurement menggunakan AES, RSA, dan SHA1

Abstract

Digital signature is an authentic evidence and also has a function like a signature on the printed document, but its use in digital documents. Documents that was sent through the internet, should be ensured their source and destination. This research is decided to implement a security protokol on file transfer process on e-procurement system using AES, RSA, and SHA1 algorithm. Data used in this research is a compressed digital document with ZIP format. The result of this research indicate that the system has been created already capable of generating and verify digital signature. The security services that owned by this system such as confidentiality, entity authentication, data origin authentication, integrity, and non repudiation. The testing process is performed on these security services including confidentiality test, authentication test, integrity test, and non repudiation test. Confidentiality is guaranteed by the encryption process using AES algorithm. In addition, authentication, integrity, and non repudiation service is guaranteed by the digital signature mechanism.