What type of key must an administrator upload into QRadar to unhide data?

In QRadar, to unhide or decrypt data that has been protected, the administrator must upload a system-generated private key. This private key is essential because it acts as a means to access data that has been encrypted using a corresponding public key. Encryption within QRadar and similar systems relies on a pair of keys; the public key encrypts the data, while only the private key can decrypt or unhide it.

Uploading the correct private key allows QRadar to securely unlock the data and make it accessible for analysis, thereby ensuring that authorized personnel can utilize the information. Utilizing a system-generated private key also enhances security by ensuring that the key conforms to QRadar's internal standards and practices, which minimizes the risks associated with manually entered or externally generated keys.

Therefore, uploading the system-generated private key is a critical step in managing hidden data within QRadar, making it the appropriate and correct choice for this scenario.