Penyembunyian Data Teks Terenkripsi One Time Pad Pada Citra Digital Dengan Menggunakan Metode Redundant Pattern Encoding

Abstract

To be able to secure maximum data, we need a method in cryptographic techniques with a combination of steganography techniques. The cryptographic algorithm that can be used to secure data is one time pad (OTP). This algorithm works by combining each plaintext character with a key character (in this case the length of the key and plaintext must be the same) so as to produce an incomprehensible form (ciphertext). One of the steganographic methods that can be used is redundant pattern encoding (RPE). This method works by inserting the data to be hidden into the image, then extracting it to view the data again. The results of the research conducted by the author, by applying cryptographic techniques and combining them with steganography techniques, obtained a data security system that can secure data optimally.