With the development of quantum computers, the question of the security of existing cryptographic systems, including blockchain and cryptocurrencies, arises. In this article, we will examine how quantum computing may affect the security of blockchain in 2025 and what measures are being taken to protect it.
1. Quantum threat to cryptography:
• Quantum computers are capable of solving certain problems significantly faster than classical computers, which threatens traditional cryptographic algorithms.
• Quantum computing algorithms are not universal and do not provide advantages in problems that require exhaustive search.
2. Impact on blockchain and bitcoin:
• The performance of existing quantum computers is not that high, and quantum computing algorithms are not universal — they do not provide an advantage in problems that require exhaustive search.
• The electronic signature scheme based on elliptic curves is more vulnerable.
3. Security measures:
• Development of quantum-resistant cryptographic algorithms.
• Transition to alternative signature schemes that do not provide advantages to quantum computers in hacking.
Despite the potential threats from quantum computing, the blockchain industry is actively working on enhancing security. Investors and users are advised to keep track of technological developments and updates in the field of cryptography.