Implementation of Vigenere Cipher as Cryptographic Algorithm in Securing Text Data Transmission

Data theft is the process of stealing digital information from victims who do not know it in order to jeopardize privacy or obtain confidential information. Data theft becomes a problem for individual computer users, as well as large companies. Every individual has not covered the possibility of information theft because of someone's negligence. In safeguarding data, we need a technique that can help someone in keeping the data a secret. Data theft is unavoidable, but data security can be improved to prevent data misuse. Vigenere algorithm, which is a cryptographic technique, can help secure data from data misuse. This algorithm works by shifting each character in the plaintext for the key provided. The key used can be a series of characters or are words that are difficult to guess by people who want to commit a crime. Implementing the Vigenere Cipher algorithm will guarantee data security