Asymmetric key cryptography uses two distinct but mathematically linked keys for secure communication. One key is public and can be shared, while the other remains private, known only to its owner. This system enables secure data exchange, digital signatures, and user verification without needing to exchange secret keys beforehand. It underpins the security of many blockchain transactions and digital asset ownership.
Context
The ongoing discussion surrounding asymmetric key cryptography in the digital asset space centers on its resilience against quantum computing advancements. Researchers are actively developing post-quantum cryptographic methods to safeguard current systems. News often reports on breakthroughs or vulnerabilities related to this fundamental security component.
Expander Signatures, a novel cryptographic primitive, decouple heavy key generation from constant-size, lightweight verification, solving the key management burden for IoT devices on-chain.
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