Certificates that are not renewed and replaced before they expire can cause serious downtime and outages. This is not a trivial matter because certificates from a variety of sources are deployed in a variety of locations by different individuals and teams - it's simply not possible to rely on a list from a single certificate authority. The starting point in any certificate and private key management strategy is to create a comprehensive inventory of all certificates, their locations and responsible parties. ( June 2017) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources. It is the more challenging side of cryptography in a sense that it involves aspects of social engineering such as system policy, user training, organizational and departmental interactions, and coordination between all of these elements, in contrast to pure mathematical practices that can be automated. Successful key management is critical to the security of a cryptosystem. This is in contrast to key scheduling, which typically refers to the internal handling of keys within the operation of a cipher. Key management concerns keys at the user level, either between users or systems. It includes cryptographic protocol design, key servers, user procedures, and other relevant protocols. This includes dealing with the generation, exchange, storage, use, crypto-shredding (destruction) and replacement of keys. Key management refers to management of cryptographic keys in a cryptosystem. ( June 2022) ( Learn how and when to remove this template message) Several templates and tools are available to assist in formatting, such as Reflinks ( documentation), reFill ( documentation) and Citation bot ( documentation). Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. This article uses bare URLs, which are uninformative and vulnerable to link rot.
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