Symmetric Stream Cipher using Triple Transposition Key Method and Base64 Algorithm for Security Improvement
Heri Nurdiyanto, Robbi Rahim, Nur Lili Nia Wulan · Journal of Physics Conference Series · 2017
Symmetric type cryptography algorithm is known many weaknesses in encryption process compared with asymmetric type algorithm, symmetric stream cipher are algorithm that works on XOR process between plaintext and key, to improve the security of symmetric stream cipher algorithm done improvisation by using Triple Transposition Key which developed from Transposition Cipher and also use Base64 algorithm for encryption ending process, and from experiment the ciphertext that produced good enough and very random.