In this paper, we propose a novel secure image communication system that integrates quantum key distribution and hyperchaotic encryption techniques to ensure enhanced security for both key distribution and plaintext encryptio... | Find, read and cite all the research you need on Tech Science Press
In the digital era, data communication security is one of the main challenges. This research proposes a new method for secure image communication, which is a mixed triple logistic map and BB84 quantum key distribution. This approach combines the strengths of classical and quantum cryptographic systems to improve security. BB84 quantum key distribution protocol for securely distributing encryption keys. The resulting key is then processed into a hash value using the SHA-256 algorithm. These hash values are converted into ASCII values, which are used to generate three key sequences using the modified logistic map. The three key sequences are combined to form a keystream used in image encryption. Several security metrics are used to evaluate encryption security, including entropy, the Chi-Square test, and pixel correlation. The analysis results show that the encrypted image has an entropy close to eight. In addition, all chi-square values smaller than 293 indicate a uniform distribution. The correlation of nearby pixels in the encrypted image is also very low, where all values are less than 0.01, which indicates the loss of local patterns in the encrypted image. These results demonstrate that the proposed method effectively secures image communications, providing high security and resistance to conventional and quantum cryptographic attacks.
Secure image transmission is increasingly vital in the digital era, especially against emerging quantum threats. This study proposes a hybrid image encryption scheme that integrates Quantum Key Distribution (QKD) using the BB84 protocol with a combination of 7-dimensional (7D) and 2-dimensional (2D) hyperchaotic systems to achieve robust security. The BB84 protocol facilitates quantum-assisted key exchange, ensuring resistance to eavesdropping, while the hyperchaotic systems provide high entropy and complex randomness, utilized in a layered permutation-substitution encryption framework. The initial seeds for chaotic sequences are derived using a SHA-512 hash of both the input image and quantum-generated key, ensuring uniqueness and sensitivity. Experimental validation was conducted using several benchmark images. The information entropy values of the ciphered images reached up to 7.9993, indicating excellent randomness. Differential analysis showed high resistance to small perturbations, with NPCR exceeding 99.61% and UACI averaging around 33.47%, which meet standard security thresholds. Histogram and chi-square tests confirmed the uniform pixel distribution, with chi-square values below 280, satisfying the randomness criterion for 8-bit images. Furthermore, correlation coefficients of adjacent pixels dropped to near zero, evidencing effective decorrelation. The encryption scheme also demonstrated robustness to data loss, as shown by the successful decryption of partially corrupted cipher images. Robustness testing under partial data loss (200×200-pixel blocks) also demonstrated visual recoverability and algorithm resilience. Overall, the proposed BB84-assisted dual-hyperchaotic encryption scheme offers a secure and computationally effective solution for protecting sensitive image data, making it suitable for post-quantum secure communications.
Safeguarding image confidentiality is a crucial communication concern due to the valuable information that must remain inaccessible to unauthorized users. However, the imminent emergence of quantum computers has introduced pressing security concerns to current cryptography. This paper proposes a quantum-resistant cryptosystem integrating a three-qubit entanglement-based Quantum Key Distribution protocol with a chaotic Henon map to develop an image transmission system resilient to classical and quantum adversaries. This QKD employs bidirectional qubit transmission to entangle three qubits, resulting in a quantum-secured key that is double that of the E91 protocol and demonstrates exceptional eavesdropper detection capabilities via the CHSH inequality violation. A 2D Henon map is utilized to address the intrinsic vulnerabilities related to key size and security in one-dimensional logistic maps. The expanded key generates a more complex sequence employing the Henon map, ensuring the utmost security of the encryption by integrating the chaotic randomness with the cryptographic properties embedded in entanglement. The findings from various security assessments indicate that the proposed encryption is both reliable and effective. It exhibits robust resistance to differential analysis, showing NPCR at 99.6% and UACI near 50%. A colossal 10220 key space thwarts brute-force attempts, while near-zero correlation and uniform pixel-intensity distribution confirm strong statistical security, highlighting the advantages of quantum–classical cryptography protocols.
This paper presents a new quantum image encryption (QIE) algorithm that integrates a newly developed 4D Quantum Logistic-Jerk Hyperchaotic System (4D-QLJHS) with a quantum image representation (QIR) model, enabling secure and efficient image transmission.By reducing qubit usage and circuit depth, the proposed QIE framework significantly improves quantum resource efficiency.Additionally, incorporating the enhanced 4D-LJHS map strengthened security and resistance against both quantum and classical attacks, surpassing the robustness and scalability of current quantum image encryption techniques.The new 4D-QLJHS is created by combining a logistic map and a jerk system, and then converted to a quantum hyperchaotic system using a Hamiltonianbased method.These systems help create a Quantum Pseudo-Random Number Generator (QPRNG) that generates random bit sequences used to alter and rearrange data at the quantum bit-plane level during the encryption process.The quantum encryption method uses the Quantum Image Representation based on Bit Planes (QIRBP) model, which enables modifying individual pixels and color channels via CNOT and SWAP gates.We evaluate various statistical tests to confirm the security and efficiency of our system.The experiments demonstrate that the system is highly secure, featuring adequate randomness, robust protection against specific attacks, and uniform distribution in the encrypted image data.Experimental simulations of some images indicate that the system provides a satisfactory level of security for image encryption, given the computational costs.This makes it suitable for real-time image communication where security is a priority.
This paper explores a double quantum images representation (DNEQR) model that allows for simultaneous storage of two digital images in a quantum superposition state. Additionally, a new type of two-dimensional hyperchaotic system based on sine and logistic maps is investigated, offering a wider parameter space and better chaotic behavior compared to the sine and logistic maps. Based on the DNEQR model and the hyperchaotic system, a double quantum images encryption algorithm is proposed. Firstly, two classical plaintext images are transformed into quantum states using the DNEQR model. Then, the proposed hyperchaotic system is employed to iteratively generate pseudo-random sequences. These chaotic sequences are utilized to perform pixel value and position operations on the quantum image, resulting in changes to both pixel values and positions. Finally, the ciphertext image can be obtained by qubit-level diffusion using two XOR operations between the position-permutated image and the pseudo-random sequences. The corresponding quantum circuits are also given. Experimental results demonstrate that the proposed scheme ensures the security of the images during transmission, improves the encryption efficiency, and enhances anti-interference and anti-attack capabilities.
The emergence of quantum computing has introduced unprecedented security challenges to conventional cryptographic systems, particularly in the domain of optical communications. This research addresses these challenges by innovatively combining quantum key distribution (QKD), specifically the E91 protocol, with logistic chaotic maps to establish a secure image transmission scheme. Our approach utilizes the unpredictability of chaotic systems alongside the robust security mechanisms inherent in quantum entanglement. The scheme is further fortified with an eavesdropping detection mechanism based on CHSH inequality, thereby enhancing its resilience against unauthorized access. Through quantitative simulations, we demonstrate the effectiveness of this scheme in encrypting images, achieving high entropy and sensitivity to the original images. The results indicate a significant improvement in encryption and decryption efficiency, showcasing the potential of the scheme as a viable solution against the vulnerabilities posed by quantum computing advancements. Our research offers a novel perspective in secure optical communications, blending the principles of chaos theory with QKD to create a more robust cryptographic framework.