Which of the following statements is true regarding the handling of PKI keys?

Keeping keys confidential at all times is fundamental to the security of a Public Key Infrastructure (PKI). The confidentiality of keys is paramount because these keys are essential for encrypting and decrypting sensitive data, establishing trust in digital communications, and ensuring the integrity of digital signatures. If keys become exposed or compromised, it can lead to unauthorized access, data breaches, and a total compromise of security within the PKI framework.

Given this context, stating that keys must be kept confidential aligns with best practices in cybersecurity and PKI management. Maintaining this confidentiality helps prevent malicious actors from intercepting communications or fraudulently impersonating individuals or entities.

The other statements do not accurately reflect the importance of key management in a PKI environment. For instance, while authorized personnel may be involved in key management, the handling of keys is a sensitive task that generally requires specific training and protocols to ensure security, negating the idea that any authorized personnel can handle them. Training is never optional for key management; it is a vital component to ensure proper handling and security measures are understood and applied. Sharing keys is also against best practices unless under strictly controlled circumstances, ensuring that confidentiality and integrity are not compromised.