Protection of Important Data and Information using Gronsfeld Cipher
Andysah Putera Utama Siahaan · 2018
Data security is a way to ensure that stored data is safe from corruption and that access to it is accordingly controlled. Data security helps to ensure privacy. It also helps protect personal data from theft. Data theft is one that often occurs on global computer networks. It includes criminal acts in the internet world. Chronology of theft is that an intruder enters a system and retrieves essential information without the owner's knowledge. Intruders use data that has been taken for various crimes. Various ways that intruders take to retrieve the data. This action is proven by the amount of internet traffic that is looking for a gap to infiltrate a system. Cryptography is needed to protect essential data. One of the classic algorithms used is Gronsfeld Cipher. This algorithm works by exchanging characters in messages using substitution tables. The key used is a number that determines the shift of plaintext and key. The resulting ciphertext is the result of plaintext substitution with the key table. This algorithm is constructive for users to secure their essential information when it will be sent through a global network.