What is quantum safe cryptography?

Quantum-safe cryptography refers to efforts to identify algorithms that are resistant to attacks by both classical and quantum computers, to keep information assets secure even after a large-scale quantum computer has been built.

How do quantum keys work?

QKD works by transmitting millions of polarized light particles (photons) over a fiber optic cable from one entity to another. The photons that were read using the wrong beam splitter are discarded, and the resulting sequence of bits becomes a unique optical key that can be used to encrypt data.

Who invented quantum cryptography?

Stephen Wiesner
Quantum cryptography was proposed first by Stephen Wiesner, then at Columbia University in New York, who, in the early 1970s, introduced the concept of quantum conjugate coding.

What is the difference between quantum cryptography and post-quantum cryptography?

While quantum cryptography describes using quantum phenomena at the core of a security strategy, post-quantum cryptography (sometimes referred to as quantum-proof, quantum-safe or quantum-resistant) refers to cryptographic algorithms (usually public-key algorithms) that are thought to be secure against an attack by a …

What is a simple explanation of quantum cryptography?

Quantum cryptography is a technology that uses quantum physics to secure the distribution of symmetric encryption keys. A more accurate name for it is quantum key distribution (QKD). It works by sending photons, which are “quantum particles” of light, across an optical link.

What is quantum cryptography used for?

in: Quantum cryptography. Quantum cryptography describes the use of quantum mechanical effects (in particular quantum communication and quantum computation) to perform cryptographic tasks or to break cryptographic systems.

How secure is quantum cryptography?

One aspect of quantum key distribution is that it is secure against quantum computers. Its strength does not depend on mathematical complexity, like post-quantum cryptography, but on physical principles.

What is quantum-based cryptography?

Quantum cryptography is a way of securing information based on the principle of uncertainty in quantum physics. An encryption based on such physics would in theory be ‘unbreakable’, since intercepting a message causes the encryption process to shatter like the Universe’s most delicate lock.