Packaged sets of cryptographic countermeasures for protecting data transmission are ________.

• A. Cryptographic standards
• B. Metacryptographic systems
• C. Cryptographic systems
• D. All of the above

Answer: (C)

Packaged sets of cryptographic countermeasures for protecting data transmission refer to a cryptographic system. This is the complete package that brings together algorithms, modes of operation, key management, and the associated protocols to provide confidentiality, integrity, and authenticity for data in transit. Standards describe specifications and interfaces used to achieve interoperability, but they are not the assembled protection package itself. The term metacryptographic systems isn’t a standard way to describe such packaged solutions. So, the best fit is cryptographic system because it captures the full, integrated solution used to secure data as it moves across networks.