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Which of the following would lead to revocation of the key if it were compromised?
Hashing Algorithm
Public Key
Digital Signature
Private Key
If the private key were compromised the key would need to be revoked as the thief can now use this private key to masquerade as the user and unencrypt the data. The user would need to make his/her public key available so that a sender can encrypt the data they intend to send to him/her so that the user's private key can unencrypt the data. A thief can now masquerade as the user utilizing their digital signature if they obtain the private key. However, this can only be done if the private key is compromised so digital signature is not correct. Finally, a hashing algorithm has nothing to do with this topic at all.
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