Definition ∞ A key refresh protocol is a cryptographic process designed to periodically update or replace the secret keys used in a security system without disrupting ongoing operations. In digital asset security, this protocol helps mitigate the risk associated with long-term key exposure or potential compromises. By regularly generating new keys, it limits the window of vulnerability for private keys controlling digital assets. This enhances the overall security posture against persistent adversaries.
Context ∞ Key refresh protocols are an advanced security measure becoming more relevant for digital asset custodians and users managing significant holdings. The challenge lies in implementing these protocols seamlessly and securely, especially in multi-signature or distributed custody setups. News on cryptographic advancements often highlights the benefits of such protocols in preventing sophisticated attacks and improving the longevity of cryptographic security for digital assets.