Quantum computers are expected to break modern public key cryptography owing to Shor's
algorithm. As a result, these cryptosystems need to be replaced by quantum-resistant …

Quantum cryptography exploits principles of quantum physics for the secure processing of
information. A prominent example is secure communication, ie, the task of transmitting …

In this paper, we present several methods to improve the evaluation of homomorphic
functions in TFHE, both for fully and for leveled homomorphic encryption. We propose two …

Due to Shor's algorithm, quantum computers are a severe threat for public key cryptography.
This motivated the cryptographic community to search for quantum-safe solutions. On the …

In this paper, we present a hybrid encryption scheme that is chosen ciphertext secure in the
quantum random oracle model. Our scheme is a combination of an asymmetric and a …

We present a new scheme for quantum homomorphic encryption which is compact and
allows for efficient evaluation of arbitrary polynomial-sized quantum circuits. Building on the …

Classical cryptographic techniques are currently under the growing quantum computing
threat. New techniques that quantum computing algorithms cannot break are urgently …

Quantum information is well-known to achieve cryptographic feats that are unattainable
using classical information alone. Here, we add to this repertoire by introducing a new …

We present an implementation of Kuang and Bettenburg's Quantum Permutation Pad (QPP)
used to encrypt superposition states. The project was conducted on currently available IBM …

The emergence of practical quantum computers poses a significant threat to the most
popular public key cryptographic schemes in current use. While we know that the well …