Which of the following types of keys is found in a key escrow?
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A. B. C. D.B.
In cryptography, key escrow is a process in which a third party holds a copy of a cryptographic key that is used to decrypt data. The purpose of key escrow is to ensure that encrypted data can still be accessed in case the original key is lost or unavailable.
Key escrow can involve different types of keys, but the most common one is the private key. In a typical scenario, a user generates a private key to encrypt their data, and then provides a copy of the key to a trusted third party, such as a government agency or a trusted service provider. The third party stores the key securely and can release it to the user in case of need.
Therefore, the correct answer to the question is B. Private, as private keys are commonly used in key escrow arrangements. Public keys, on the other hand, are often freely distributed and do not need to be kept in escrow. Shared keys and session keys are also not typically used in key escrow arrangements.
It is worth noting that the use of key escrow is controversial, as it raises concerns about privacy, security, and the potential for abuse by the third party holding the key. Therefore, key escrow is subject to regulations and standards, and its use is often limited to specific scenarios, such as in government or law enforcement investigations.