Advances in computing technology pose a significant threat to the classical cryptographic systems that currently secure our digital communications and data. The core of this threat lies in quantum computers' ability to solve certain mathematical problems far more efficiently than classical computers.
One of the most well-known quantum algorithms that highlights this threat is Shor's algorithm. Developed by mathematician Peter Shor in 1994, this algorithm can factorize large integers exponentially faster than the best-known classical algorithms. The security of many classical cryptographic systems, such as RSA (Rivest-Shamir-Adleman), relies on the difficulty of factoring large prime numbers.
This impending risk has led to significant research in the field of post-quantum cryptography to develop cryptographic algorithms that are secure against both classical and quantum attacks. National Institute of Standards and Technology (NIST) of the US has led the efforts to standardize algorithms paving the way for practical migration of Quantum Safe data security products.
As quantum computing continues to progress, it is crucial for organizations to transition to Quantum Secure systems employing Post Quantum Cryptography to prepare for a future where classical cryptographic systems may no longer provide adequate security.
As the threat from quantum computers becomes more imminent, a new term, Y2Q (Years to Quantum), has emerged to emphasize the urgency of transitioning from classical cryptographic systems to post-quantum cryptographic (PQC) systems.
A significant security threat known as "Harvest Now, Decrypt Later" (HNDL) has emerged. This threat involves adversaries intercepting and storing encrypted data today with the intention of decrypting it in the future when quantum computers become powerful enough to break current cryptographic algorithms underscoring the need to start transitioning to PQC based systems.
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