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Post quantum cryptography

What is Post Quantum Cryptography – Research

Ankit Chaubey, 18, January 202318, January 2023

Post-quantum cryptography (PQC) refers to cryptographic methods that are secure against potential attacks by quantum computers. Quantum computers are powerful computing devices that use quantum-mechanical phenomena to perform certain types of computations much faster than classical computers. They possess the ability to solve complex mathematical problems by using quantum algorithms, which can be faster than their classical counterparts.

One of the most significant implications of this is the ability to break many of the encryption methods used today. RSA and Elliptic-Curve Cryptography (ECC) are popular encryption methods that are used in various applications such as online banking, e-commerce, and secure communication. However, a sufficiently powerful quantum computer could potentially break these encryption methods in a relatively short amount of time. This is a significant concern for the security of digital communications in the future.

To address this problem, post-quantum cryptography aims to develop cryptographic methods that are secure against attacks by quantum computers. Some examples of post-quantum cryptographic methods include:

TABLE OF CONTENTS

  • 1 Lattice-based cryptography
  • 2 Code-based cryptography
  • 3 Multivariate-quadratic-equations based cryptography
  • 4 Hash-based cryptography
    • 4.1 Conclusion
    • 4.2 Useful links
    • 4.3 About The Author
      • 4.3.1 Ankit Chaubey
    • 4.4 Related

Lattice-based cryptography

This method uses the properties of high-dimensional mathematical structures called lattices to encrypt and decrypt messages. Lattice-based cryptography is considered to be one of the most promising post-quantum cryptographic methods. It is based on the difficulty of solving the shortest vector problem (SVP) and the closest vector problem (CVP) in high-dimensional lattices. These problems are known to be hard for quantum computers, making lattice-based cryptography secure against quantum attacks.

Code-based cryptography

This method uses error-correcting codes to encrypt and decrypt messages. Code-based cryptography is based on the difficulty of decoding a linear code, which is known to be hard for quantum computers. This makes code-based cryptography secure against quantum attacks.

Multivariate-quadratic-equations based cryptography

This method uses mathematical equations to encrypt and decrypt messages. Multivariate-quadratic-equations based cryptography is based on the difficulty of solving systems of multivariate quadratic equations, which is known to be hard for quantum computers. This makes multivariate-quadratic-equations based cryptography secure against quantum attacks.

Hash-based cryptography

This method uses cryptographic hash functions to encrypt and decrypt messages. Hash-based cryptography is based on the difficulty of inverting a cryptographic hash function, which is known to be hard for quantum computers. This makes hash-based cryptography secure against quantum attacks.

It is important to note that post-quantum cryptography is still a relatively new field of research, and many of these methods are still in the early stages of development. There is ongoing research to improve the security and efficiency of post-quantum cryptographic methods, and it will take time to develop and standardize these methods.

However, it’s also important to note that post-quantum cryptography is not a panacea and it will not provide protection against all types of attacks. For example, post-quantum cryptography will not protect against attacks on the physical layer, such as eavesdropping on a communication channel. Additionally, post-quantum cryptography will not protect against implementation errors or other implementation-related security issues.

Conclusion

In summary, post-quantum cryptography is an important field of research that aims to develop cryptographic methods that are secure against attacks by quantum computers. There are several post-quantum cryptographic methods that have been proposed, including lattice-based cryptography, code-based cryptography, multivariate-quadratic-equations based cryptography and hash-based cryptography. While these methods are still in the early stages of development, they hold promise for maintaining the security of digital communications in the face of the growing threat of quantum computing.

Useful links

  • Required skill for entry level Cybersecurity job
  • Madware/Adware How to avoid?
  • What is Encryption? | Why is data encryption necessary?
  • 7 Most Common Password Hacking Techniques used by Hakers:Learn How to Protect.

About The Author

Ankit Chaubey

See author's posts

    Related

    Cyber Security Hacking Reveals Code-based cryptographyCyber SecurityHash-based cryptographyLattice-based cryptographyMultivariate-quadratic-equations based cryptographyPost Quantum CryptographyQuantum Encryption

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