Quantum computing is considered among the next big leaps in computer science. While a
fully functional quantum computer is still in the future, there is an ever-growing need to …

In this paper, we propose some new quantum circuit implementations of SM4 block cipher
and SM3 hash function, which are based on the following ideas. Firstly, we propose an …

In this paper, we propose a quantum circuit for the SPEEDY block cipher for the first time and
estimate its security strength based on the post-quantum security strength presented by …

To build a secure cryptography system in the post-quantum era, one must find the minimum
security parameters against quantum attacks by estimating the quantum resources of a fault …

As the prevalence of quantum computing is growing in leaps and bounds over the past few
years, there is an ever-growing need to analyze the symmetric-key ciphers against the …

This paper presents an optimized quantum circuit for the scrypt cryptographic algorithm. We
applied various optimization techniques to reduce the DW cost, which is the product of the …

Hash algorithms are among the most crucial algorithms in cryptography. The SM3 algorithm
is a hash cryptographic standard of China. Because of the strong collision resistance and …

This paper explores the optimization of quantum circuits for Argon2, a memory-hard function
used in password hashing applications. With the rise of quantum computers, the security of …

Quantum computing (QC) holds the promise of revolutionizing problem-solving by exploiting
quantum phenomena like superposition and entanglement. It offers exponential speed-ups …

The advent of quantum computers threatens the security of existing hash functions. In this
paper, we confirmed the implementation results of quantum circuits for …