👉 In the context of cryptography, a "sequestrator" refers to an entity that is used to encrypt data or information and then decrypts it. A sequestrator can be a hardware component such as a key ring, a cryptographic key, or even a software application that allows you to control which keys are available for use. For example, in the context of encryption algorithms, a sequestrator could be used to ensure that only authorized users have access to sensitive data. In