Definition ∞ A hybrid cryptosystem combines the strengths of both symmetric and asymmetric encryption methods to secure data. It uses asymmetric encryption for the secure exchange of a symmetric key, which is then used for the bulk encryption of the actual data. This approach leverages the efficiency of symmetric encryption for large data volumes and the secure key distribution capabilities of asymmetric encryption. Such systems offer a practical balance of speed and security.
Context ∞ Hybrid cryptosystems are foundational for securing communications and data within many digital asset platforms and blockchain applications. The ongoing discussion concerns the post-quantum security of the asymmetric components as cryptographic research advances. A critical future development involves adapting these systems to resist attacks from quantum computers, ensuring long-term data protection in the digital economy.
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