Quantum computing, very likely going to be a threat against current cryptographic systems especiallywith respect to war between nations, where secure communication and secured data access are very important.Conventional encrypting schemes such as RSA or ECC depend on mathematical problems that can easily besolved by quantum algorithms, typically Shor's, which makes such schemes vulnerable to attacks in the future.This research investigates how PQC is implemented to combat the looming threats of quantum cyber warfare sothat national security is assured. Among the most powerful PQC candidates are lattice based cryptographictechniques like NTRU Encrypt, Kyber and Dilithium, all representing quantum-resilient security. The researchlooks at the time taken for key generation relative to various security levels and quantum attack detection rates,analyzing in detail how these PQC algorithms stand in protecting military communications and criticalinfrastructure. The inference seems to be that though security levels increase, so does the computational overhead,calling for optimization strategies for realistic deployment. Also, a novel adaptive quantum attack detection systemcan be appended to render threat identification more efficient along the years. The joining of lattice-basedencryption with quantum-resistant cloud storage and secure communication protocols will thus yield a scalableefficient model for post-quantum cyber defense. Above all, the research states the need for quickly changingcryptographic standards to those which afford resistance to quantum attacks to secure sensitive data.
Quantum computing, very likely going to be a threat against current cryptographic systems especiallywith respect to war between nations, where secure communication and secured data access are very important.Conventional encrypting schemes such as RSA or ECC depend on mathematical problems that can easily besolved by quantum algorithms, typically Shor's, which makes such schemes vulnerable to attacks in the future.This research investigates how PQC is implemented to combat the looming threats of quantum cyber warfare sothat national security is assured. Among the most powerful PQC candidates are lattice based cryptographictechniques like NTRU Encrypt, Kyber and Dilithium, all representing quantum-resilient security. The researchlooks at the time taken for key generation relative to various security levels and quantum attack detection rates,analyzing in detail how these PQC algorithms stand in protecting military communications and criticalinfrastructure. The inference seems to be that though security levels increase, so does the computational overhead,calling for optimization strategies for realistic deployment. Also, a novel adaptive quantum attack detection systemcan be appended to render threat identification more efficient along the years. The joining of lattice-basedencryption with quantum-resistant cloud storage and secure communication protocols will thus yield a scalableefficient model for post-quantum cyber defense. Above all, the research states the need for quickly changingcryptographic standards to those which afford resistance to quantum attacks to secure sensitive data.
Not only is quantum computing a game changer but it is also an unprecedented threat to world security in cyberspace. Although quantum systems are expected to transform scientific computing, they are also endangering the very notion of classical cryptography, specifically, the public key system of RSA and elliptic curve cryptography (ECC). The problems in computation that such schemes are built on, including integer factorization and discrete logarithms, can be efficiently solved using quantum algorithms, including Shor. This makes the secured communication network by classical encryption susceptible to quantum attacks in the future. In turn, current quantum-resistant or post-quantum cryptographic algorithms (PQC) are resistant to classical and quantum adversaries. The article provides a general overview of significant families of PQC, such as lattice-based, code-based, multivariate polynomial, hash-based and isogeny-based, and discusses their relevance to the provisioning of communication networks. The work illuminates to some degree the advances toward standardization already being undertaken by the National Institute of Standards and Technology (NIST) by analysing its security underpinnings, trade-offs in its operation and its readiness to deploy. Experiments show that lattice based (CRYSTALS-Kyber, Dilithium) and code based (McEliece) are both well-theoretically secure as well as high performance, and that systems based on code (McEliece) have a long track record of reliability at the cost of large key-sizes. Other issues which have been talked about in the paper are interoperability issues, migration policies and side-channel attack defence. It finds conclusively that quantum-resistant cryptography is the next step that must be regarded as the most important to secure the secrecy and integrity of communication networks in the future.
The advent of quantum computing poses a significant threat to current cryptographic systems, particularly public-key algorithms such as RSA and ECC, which are vulnerable to quantum attacks like Shor's algorithm. Post-Quantum Cryptography (PQC) aims to develop and standardize quantum-resistant cryptographic algorithms to secure digital communications in the quantum era. This paper examines the current landscape of PQC, focusing on the evaluation and standardization efforts led by organizations such as the National Institute of Standards and Technology (NIST). We analyze the major families of quantum-resistant algorithms, including lattice-based, hash-based, code-based, multivariate, and isogeny-based cryptography, discussing their security guarantees, performance trade-offs, and implementation challenges. Furthermore, we review NIST's PQC standardization process, highlighting selected finalists and alternate candidates, and explore the ongoing transition challenges in adopting these algorithms across industries. Finally, we discuss future directions for PQC research, including hybrid cryptographic systems and the need for continued cryptanalysis to ensure long-term security. This work provides a comprehensive overview of the progress and challenges in deploying quantum-resistant cryptography to safeguard against emerging quantum threats.
The rapid growth of quantum computing poses a critical threat to classical cryptographic systems. That is due in large part to the fact that they represent efficient solutions for some of the most challenging mathematical problems such as integer factoring or finding discrete logarithms. Schemes currently in wide use including RSA, Diffie–Hellman, and elliptic curve cryptography are particularly susceptible to being attacked by quantum computers, using algorithms like Shor's Algorithm and Grover's Algorithm. The advent of post-quantum cryptography (PQC) provides a promising potential answer to providing longterm security from adversaries using quantum computing capabilities. This paper presents a comprehensive state-of-the-art review of various PQC techniques currently being researched, including lattice-based methods, code-based methods, multivariate methods, hash-based methods, and isogeny-based methods. key challenges that will need to be addressed include computational overhead, large key sizes and implementation complexity. Furthermore the study reviews the current standardization efforts by the National Institute of Standards and Technology related to PQC and discusses some of the very specific practical considerations that need to be considered before widely deploying these techniques. The paper concludes by a complete list of existing research challenges and proposed future work that will assist in the development of efficient and scalable systems that will resist attacks from quantum computers.
The advent of quantum computing poses a significant challenge to conventional cryptographic methods such as RSA, Elliptic Curve Cryptography (ECC), and Diffie-Hellman key exchange. Quantum algorithms, particularly Shor’s algorithm, have the potential to break these encryption techniques, making it essential to develop cryptographic approaches that can withstand quantum threats. Post-quantum cryptography (PQC) has emerged as a crucial area of research, aiming to establish cryptographic mechanisms that remain secure even in the presence of quantum adversaries. This study presents a detailed comparative analysis of five primary categories of quantum-resistant cryptographic algorithms: lattice-based, code-based, hash-based, multivariate polynomial, and isogeny-based encryption schemes. Each of these approaches offers distinct advantages and challenges in terms of security, efficiency, and implementation feasibility. Among them, lattice-based cryptography has gained significant attention due to its robust security properties and computational efficiency, making it a strong candidate for standardization. Conversely, code-based cryptography provides high security but is hindered by its large key sizes, affecting its practical deployment. The research includes a real-time performance assessment of selected PQC algorithms, analyzing key factors such as encryption speed, key size, and computational demands. Furthermore, the study examines the challenges associated with transitioning from classical encryption standards to quantum-resistant frameworks, including compatibility constraints, computational overhead, and the necessity for global standardization. Potential mitigation approaches, such as hybrid cryptographic techniques that integrate both classical and post-quantum encryption models, are also explored. Our findings emphasize that while quantum-resistant cryptography is still evolving, early adoption of PQC frameworks is essential for safeguarding future communication networks. This paper provides valuable insights for researchers, cybersecurity professionals, and policymakers on strategic measures to implement quantum-secure encryption systems effectively.
The advent of large-scale quantum computers poses a profound and imminent threat to the foundational public-key cryptographic systems that secure modern digital communication, including RSA and Elliptic Curve Cryptography (ECC). These widely deployed algorithms rely on the computational intractability of factoring large integers and solving discrete logarithm problems, which are known to be efficiently solvable by Shor's algorithm on a sufficiently powerful quantum computer. This paper explores the transition to a post-quantum cryptographic (PQC) era, with a particular focus on lattice-based cryptography as a leading candidate for quantum-resistant solutions. We provide a comprehensive overview of the quantum threat, delve into the mathematical underpinnings of lattice problems, and examine prominent lattice-based schemes such as Kyber, Dilithium, and NTRU. Through a detailed literature review, theoretical analysis, and comparison with other PQC families, we highlight the security properties, efficiency considerations, and implementation challenges of lattice-based cryptography. The paper discusses the ongoing standardization efforts, particularly by the US National Institute of Standards and Technology (NIST), and evaluates the suitability of lattice-based schemes for securing critical infrastructure in the face of quantum adversaries. We conclude by emphasizing the urgency of cryptographic migration and the pivotal role lattice-based solutions are poised to play in safeguarding digital security in the post-RSA era.
The looming threat of quantum attacks on the digital infrastructure protected by conventional cryptographic protocol has generated urgency in identifying and deploying countermeasures that can mitigate the threat. There is a need for stronger cryptographic schemes that combine the strengths of both classic and quantum technologies. Post-Quantum Cryptography (PQC) has emerged as a potential solution that can withstand the challenges posed by advances in quantum computing. Owing to the increasing importance of PQC, the present research is an attempt to assess the existing research done so far so that the existing gaps can be identified which can then strengthen the existing literature. The systematic literature review presented in this work has outlined six key categories of PQC, namely, lattice-based, code-based, hash-based, multivariate, isogeny-based, symmetric-key-based cryptosystems. The study concluded that the advances made in quantum computing will result in the development of quantum computers with superior computational power. Such highly efficient quantum computers will have the ability to break the currently available cryptography schemes most used in a variety of practical applications. With the advent of quantum computing, the computational capabilities of the potential cyber attackers would grow exponentially, which would render the traditional cyber security measures inadequate. This calls for techniques like PQC to be developed and strengthen.