What is Quantum Cryptology And How It Works

Cyber threat issues are on the rise in the field of computing all around the globe. Your data is more vulnerable to access by unauthorized hands. There is more need for your data to be encrypted and kept safe from criminals’ access. A third party can hack your data easily if the device used does not guarantee 100% security. Innovations in technology have brought about new solutions in cybersecurity. Quantum encryption companies have enabled quantum computers to solve data risks, which is a safer alternative to the classical way of communicating.

Quantum cryptology is a method of securing data through encryption where a plain text is converted into a form only a party will the correct key can understand. Quantum mechanical attributes are employed to carry out cryptology tasks. The role played by the quantum principles makes it impossible for data to be hacked.

How Does It Work

Quantum encryption secures data by enabling sharing of secret keys. Without this key, nobody can encrypt or decrypt data. A quantum encryption company will offer symmetric and asymmetric keys packages for encryption. Symmetric keys can be applied when encrypting actual data, while an asymmetric key is applicable when sharing. A private or public key is generated and used in the system. Both keys are safe to use. In any case, secret keys must be shared to access the content. In the asymmetric process, the public key is available to anyone who intends to send you a text, but a person with the private key will not disclose it to avoid access maliciously. There is a variety of applications in quantum cryptography, as discussed below;

Quantum key distribution

Quantum key distribution is the most popular in the field of quantum cryptology. It allows two individuals or parties to communicate without a third party eavesdropping in the conversation. Quantum application, in this case, establishes a shared key that can only make sense to the intended persons, that is, the sender or the receiver. If the third-party somehow manages to hack the information, they cannot interpret the message.

If the intruder tries to learn about the key so that they can use it to analyze the data, it changes its form, alerting the intended parties that someone is trying to access their secret. Its security is proven using mathematical methods and no implication on the third-party who tried to access information. The protection offered is unconditional. Where parties do not trust each other, coin flipping, commitment, or mistrustful quantum cryptology is applied.


Quantum principle, in this case, is applied to ensure that one party does not take advantage of another party and cheat in the communication process. It is possible to generate a series of photons randomly to be shared with another party. In coin flipping, the receiver cannot understand the qubit and will be forced to measure it to understand. Measuring properties in a fraction of the photons’ number will help the receiver determine the secret key. Once it has been calculated, it cannot be relied on to give similar results the second or third time. Coin flipping encryption is a secure way of sharing information as the receiver can read qubit once meaningfully. If a third party tries to measure the proton, a second-time alarm is raised.

Mistrustful quantum cryptology

Quantum systems can be applied to determine whether the principle of quantum physics has been violated. If one party broke the laws, the other party could not trust the cryptology process’s output. Each party wants to be guaranteed that the opposite party did not cheat. A party can fail to use the suitable protocol as provided in the quantum mechanics when they want to influence the outcome’s effect.

Commitment quantum cryptology

In quantum commitment, a party encrypts a message and adds a value they cannot change, and the receiving party cannot detect it’s there unless the sending party informs them. By fixing the value in the coded text, the party is committing themselves to the quantum protocol. This system allows distrustful members to be detected, and the right measure is taken.

Location-based quantum cryptology

Photons will be transferred from one end to the other through an optic fiber cable. The encryption process can be implemented so that a person out of a particular geographical position cannot read the text. You can only get authentication if you are within the given geographical area. Suppose you tried to access the information while out of specified location verification would be denied. If a person tries to read or copy a photon from the wrong position, the verifier can detect the wrong endpoint, and necessary measures are taken.


Quantum devices can be vulnerable to hacking when online. A party can choose to overlook the common assumption and choose a device-independent protocol when using quantum cryptology. The protocols are designed internally and ensure that the devices used are honest. Sensitive data is secured from malicious attacks if the instruments used are also accurate.

Quantum encryption is the necessary solution in the struggle of safeguarding vital information. It is important to note that post-quantum cryptology is different from quantum cryptology.

Post-quantum encryption describes algorithms assumed to be secure against attack from a quantum device. Old and traditional computers can take a long time to penetrate the complex algorithm applied. It is not entirely safe as it can easily be broken into if the quantum computer used is stronger. On the contrary, quantum cryptology is impenetrable by hackers and therefore considered more secure.

Quantum encryption has a guarantee of protection for over a century. It is safe for governments and large organizations to keep data without worry about the loss of data. The protocols and algorithms applied to make it impossible for hackers to use quantum computers to attack the secured data. The quantum mechanics involved are simple to implement. They are used to detect eavesdropping early enough before any damage is done and parties can protect themselves. Quantum cryptology is cost-effective as limited resources are required in maintaining it. Do not take any chances that would otherwise compromise the security of your data.