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Symmetric Stream Cipher using Triple Transposition Key Method and Base64 Algorithm for Security Improvement

2017; IOP Publishing; Volume: 930; Linguagem: Inglês

10.1088/1742-6596/930/1/012005

1742-6596

Heri Nurdiyanto, Robbi Rahim, Nur Wulan,

Coding theory and cryptography

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.