Implementasi algoritma Advanced Encryption Standard (AES) dan Elliptic Curve Cryptography (ECC) pada keamanan layanan pesan

Nurrohman, Ibnu Aziz (2021) Implementasi algoritma Advanced Encryption Standard (AES) dan Elliptic Curve Cryptography (ECC) pada keamanan layanan pesan. Sarjana thesis, UIN Sunan Gunung Djati Bandung.

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Abstract

The issue of messaging service security has always been an important concern in today's digital era. Sending message over the internet allows someone to steal message data in the middle of the transmission. Encryption is one of the methods used to secure data. To overcome the shortcomings of the security of the message service, it is necessary to have a cryptographic method. Encryption converts readable data (plaintext) into unreadable data (ciphertext) using a specific algorithm. Advanced Encryption Standard (AES) is a symmetric encryption algorithm that requires the same key for encryption and decryption. The AES-128 algorithm is often used to secure large data, because of its speed and efficiency, but it lacks complex and insecure management. Elliptic Curve Cryptography (ECC) is an asymmetric algorithm that requires different keys for encryption and decryption. ECC has good key management and security but is only suitable for small data sizes. The method implemented in this research is combining AES-128 and ECC methods in website-based applications by means of encrypted message data using the AES-128 algorithm with key obtained from ECC algorithm, then chipertext is obtained and good encryption results. The key used is the key taken from the curve provided by the modul. The testing method uses black box testing where black box testing is a method used to find errors and demonstrate the system's functionality when it is operated. After passing the testing phase on the implementation of message service security, it can be concluded that the user message data security system using the AES-128 and ECC algorithms has been successfully built.

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