Definition ∞ Hash Based Signatures are digital signature schemes that rely on cryptographic hash functions for their security. Unlike traditional public-key cryptography, these signatures do not depend on difficult mathematical problems like factoring large numbers. They derive security from the collision resistance properties of hash functions. These schemes are considered a promising solution for post-quantum cryptography.
Context ∞ Hash Based Signatures are a significant area of research and development in post-quantum cryptography, offering resistance to attacks from quantum computers. Their implementation in digital asset systems is gaining attention as a protective measure against future security vulnerabilities. The challenge involves managing the relatively larger signature sizes and the one-time use nature of certain schemes compared to current methods.
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