In every day live, DES is using in many applications like to encrypt PIN (Personal Identity Number) in ATM and Banking transactions via internet. Since that, DES has been used in desimination information widely to protect data savely. DES algorithm is adopted as standard algorithm. This application will implementing the way of encryption and decription using DES. This cryptographic applications implementing encryption and decryption method using the DES algorithm.This research will presenting application design of crioptographic and its algorithm data of DES.

In this final project will be presented the design of cryptographic applications with cryptographic algorithm Data Encryption Standard. This technique is used to convert the data into a specific code, with the aim that the stored information can not be read by anyone except those who are eligible. By using a VPN, users can access the computer that is on the LAN even though the user is not in the same location with a LAN.Cryptography is a field of knowledge which uses a mathematical equation to perform the encryption and decryption process. While VPN is a secure way to access the Local Area Network that is in range, using the Internet or other public network to perform packet data transmission in private. LAN is a computers network that are connected to a computer server by using specific topologies, typically used in areas of the building or area a distance o f not more than 1 km (local area). To facilitate the management admin, then the application will be tested on the LAN network and VPN (Virtual Private Network) network. Furthermore, students who have paid practicum will be immediately incorporated into the classes that are available with regard to the number of students and GPA o f students per class, so it will obtain practical classes by the number o f students and the average GPA o f each class balanced.Concept application using client-server database, where the database is on the Local Area Network (LAN) STTA. MM algorithm works by determining many lab classes based on students who took the KRS. This makes the emergence of the idea to establish an MM algorithm is applied to a practical application o f automation systems.

Students are free to choose his own class, this often resulted in unbalanced number of students in the classroom lab that is consideredless effective way. Practicum registration systems that exist on campus STTA previously done manually, where students will sign up to the admin to bring proof of payment practicum.

Konsep algoritma pemrograman