# Quantum Security: Protecting the Future of Digital Data

## What Is Quantum Security?

Data breaches like those experienced by Yahoo, Aadhaar, and Alibaba demonstrate how easily cybercriminals can steal personal data.

While their methods for breaking systems remain effective, companies can protect themselves by upgrading security standards to reduce these attacks.

Quantum security is one means of accomplishing this. Unfortunately, its terminology – such as quantum-safe encryption, quantum-resistant encryption, and quantum cryptography – can often be confusing.

## Security protocols and systems developed to protect from future quantum computers

Quantum computing has dramatically transformed the cybersecurity landscape.

Quantum computers can solve mathematical problems at an astonishing speed, posing serious threats to traditional encryption and data protection methods.

Security professionals have therefore worked on developing quantum-resistant cryptographic algorithms.

Unfortunately, there is no set deadline for when practical quantum computers will become widely available, making it difficult for organizations to assess how urgently they must upgrade their infrastructure to protect against quantum breaches.

One approach is post-quantum cryptography. Post-quantum encryption uses algorithms capable of withstanding quantum computer attacks, making them more secure than existing algorithms and protecting sensitive information from being accessed illegally.

Furthermore, this technology can also help strengthen existing cryptosystems.

As well as post-quantum cryptography, businesses can utilize IBM Quantum Safe technology to mitigate against quantum threats and prepare for the future of cyber security.

This solution allows businesses to replace at-risk cryptography with quantum-safe alternatives while still having full visibility and control of their overall cybersecurity posture.

Businesses can protect themselves from sophisticated cyber attacks across their entire infrastructure by using advanced threat prevention, real-time global threat intelligence, unified policy management, SD-WAN security, and IoT security to combat advanced attacks with advanced prevention technology like advanced threat prevention, real-time global threat intelligence and SD-WAN/IoT security solutions.

This helps lower costs while improving security while increasing agility.

## Algorithms like Shor?s algorithm

Peter Shor wasn’t trying to hack the Internet when he developed an algorithm for factoring large numbers into prime factors, but this strategy would have had devastating repercussions for one key aspect of Internet security: quantum computers’ exponentially faster ability to solve certain mathematical problems poses an immediate threat to popular asymmetric cryptographic protocols like RSA found online today.

Quantum computers take advantage of a property known as superposition, which allows them to carry out multiple calculations at the same time – making them far more efficient than classical computers, which can only do one calculation at a time.

Shor’s algorithm takes full advantage of this property and significantly boosts its efficiency.

Peter Shor, a mathematician from Canada, developed an algorithm that could potentially be implemented on a quantum computer to efficiently find prime factors of large numbers – which poses a threat to popular encryption methods relying on the difficulty of factoring large numbers – such as the RSA cryptosystem and other similar approaches.

Although there are numerous textbook quantum algorithms with exponential speedups, Shor’s algorithm stands out due to its potential applications to real world problems.

Unfortunately, practical quantum computers are still several years away from running Shor’s and other quantum algorithms efficiently as traditional computers due to environmental noise that destroys qubit states, rendering operation ineffective; improved error correction would help but may not completely eradicate this issue.

## Future quantum computers could compromise traditional cryptographic methods

As quantum computer research progresses, quantum computers could soon be capable of cracking modern encryption methods – posing a real danger to businesses that must factor into their cybersecurity planning.

Quantum computers could solve complex mathematical problems much more quickly than classical ones and reduce break time from years down to minutes, leaving popular cryptographic algorithms like RSA and Elliptic Curve vulnerable to attacks.

Traditional cryptographic systems employ public and private keys to encrypt data.

One party uses the other party’s public key for encryption before decrypting it using their associated private key; this type of encryption can be used to secure email, and online transactions and to verify identity; however, if cybercriminals use quantum computing to breach such systems they could gain access to sensitive information.

Researchers are actively developing post-quantum cryptography methods that are resistant to quantum computing to address this potential threat, known as lattice-based encryption, code-based cryptography, and multivariate polynomial cryptography.

Such encryption will protect businesses and governments’ data stored from attack once quantum computing becomes widespread – the key is regularly reviewing your cryptographic practices while keeping abreast of developments related to quantum computing technology.

## Shor?s algorithm is a good example of a quantum algorithm

Shor’s algorithm is a quantum algorithm designed to solve integer factorization faster than classical computers can.

Based on quantum Fourier transform and modular exponentiation techniques, as well as quantum parallelism to perform multiple calculations simultaneously.

As such, it makes solving large numbers quickly–including even difficult ones–possible.

This algorithm can quickly factor large composite numbers using polynomial time instead of exponential time required by classical algorithms, and has become a symbol for quantum computing’s immense power and has generated much interest in post-quantum cryptography – the study of creating cryptographic methods resistant to attacks from quantum computers.

Implementing the Shor algorithm on a large scale would require using many qubits, the fundamental units of quantum computing.

Unfortunately, environmental noise often compromises these delicate states, leading to their destruction during operations and adding significant complexity overhead to an algorithm’s computational complexity.

Error correction techniques may help mitigate noise but this adds further overhead to any given implementation.

Researchers have developed several approaches that can enhance the performance of the Shor algorithm, including adiabatic quantum computing and compilation techniques that reduce computational demands by decreasing Pauli measurements required to uniquely identify qubit states.

These advances are helping accelerate the development of quantum computers capable of running this algorithm.