Final answer:
In the context of the CIA triad, encrypted information being accessible only with the correct cryptographic key reflects the principle of confidentiality, which is fundamental in cybersecurity.
Step-by-step explanation:
The aspect of the CIA triad described by the statement that encrypted information is only viewable by authorized users who have the correct key to decrypt is confidentiality. Confidentiality ensures that sensitive information is accessible only to those who are authorized to access it, preventing unauthorized disclosure or viewing. In the contexts of cybersecurity and information assurance, this is one of the core principles alongside integrity and availability.