A Cryptography Algorithm Using Quantum Wavelet S-Transform Muhammad Sholehuddin Yusuf(a*), Mohammad Ilham Dwi Firmansyah(a), Subiono(a)
a) Faculty of Mathematics, Sepuluh Nopember Institute of Technology
Surabaya, Indonesia
*msholehuddinyusuf[at]gmail.com
Abstract
Cryptography is instrumental in the advancement of information and communication technologies, particularly in maintaining information security. In general, cryptography is divided into classical and modern cryptography. Current cryptography is threatened to be solved by quantum cryptography, which is a cryptographic algorithm based on quantum phenomena such as superposition and entanglement. This paper discusses how to construct a cryptographic algorithm using quantum wavelet s-transforms. Encryption is based on analysis of the quantum wavelet s-transform, and decryption is based on the synthesis process of the quantum wavelet s-transform. The encryption key is based on many transformations and levels. The decryption key consists of three parts, namely the encryption key, binary code, and permutation matrix code. Based on the test results and analysis, it is found that this cryptographic algorithm is good based on the correlation between plaintext and ciphertext, the quality of encryption, and the size of the key space. It is also time efficient because it has a quantum complexity of O(n) or linear complexity.
