Nøglerotation

Nøglerotation is a term used in various contexts, primarily in computer security and access control, to describe the process of systematically changing secret keys or credentials over time. The core principle is to limit the exposure of any single key and to ensure that if a key is compromised, its period of usefulness for an attacker is finite. This helps to mitigate the risk associated with long-lived secrets.

In cryptography, nøglerotation refers to the regular replacement of cryptographic keys. This can involve generating new keys, securely distributing them, and decommissioning old keys. The frequency of rotation often depends on the sensitivity of the data being protected and the perceived threat level. For example, keys used for encrypting highly sensitive data might be rotated more frequently than those used for less critical applications.

Within access control systems, nøglerotation applies to the changing of passwords, API keys, or other authentication tokens. Instead of using a single, static credential indefinitely, users or systems are prompted or automatically required to update their keys at set intervals. This practice is a fundamental security measure to reduce the window of opportunity for attackers who might gain access to a user's credentials. Implementing a robust nøglerotation policy is a key component of a comprehensive security strategy.