US Patent 10223538 Preventing persistent storage of cryptographic information

Organizations maintain and generate large amounts of sensitive information using computer hardware resources and services of a service provider. Furthermore, there is a need to be able to delete large amounts of data securely and quickly by encrypting the data with a key and destroying the key. To ensure that information stored remotely is secure and capable of secure deletion, cryptographic keys used by the organization should be prevented from being persistently stored during serialization operations. A variety of methods may be used to protect access to keying material and prevent the keying material from being stored persistently.