Triple

Target class: cryptographic scheme family
Context triple: [Curve25519-based schemes, instanceOf, cryptographic scheme family]

• A. cryptographic parameter set family
  A cryptographic parameter set family is a collection of related parameter sets, typically varying in size or security level, that define the mathematical and operational settings for a class of cryptographic algorithms.
• B. encryption scheme
  An encryption scheme is a systematic method that transforms readable data into an unreadable form using algorithms and keys to ensure confidentiality, integrity, and secure communication.
• C. cryptographic primitive
  A cryptographic primitive is a low-level, well-defined algorithm or protocol (such as a hash function, block cipher, or digital signature scheme) that serves as a basic building block for constructing more complex cryptographic systems and protocols.
• D. cryptographic protocol
  A cryptographic protocol is a precisely defined sequence of operations and message exchanges that uses cryptographic primitives to achieve security goals such as confidentiality, integrity, authentication, and non-repudiation between parties.
• E. cryptographic protocol framework
  A cryptographic protocol framework is a structured set of tools, abstractions, and rules that enables the design, specification, analysis, and implementation of secure communication protocols.
• F. None of above. chosen