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SSCP · Question #628

What principle focuses on the uniqueness of separate objects that must be joined together to perform a task? It is sometimes referred to as "what each must bring" and joined together when getting…

The correct answer is C. Split knowledge. Split knowledge is the principle where a secret (such as a cryptographic key or safe combination) is divided into separate parts, each given to a different individual. No single person possesses the complete secret - only when all parts are combined does the full secret exist…

Submitted by femi9· Apr 18, 2026Security Concepts and Practices

Question

What principle focuses on the uniqueness of separate objects that must be joined together to perform a task? It is sometimes referred to as "what each must bring" and joined together when getting access or decrypting a file. Each of which does not reveal the other?

Options

  • ADual control
  • BSeparation of duties
  • CSplit knowledge
  • DNeed to know

How the community answered

(52 responses)
  • A
    6% (3)
  • B
    2% (1)
  • C
    88% (46)
  • D
    4% (2)

Explanation

Split knowledge is the principle where a secret (such as a cryptographic key or safe combination) is divided into separate parts, each given to a different individual. No single person possesses the complete secret - only when all parts are combined does the full secret exist. This is distinct from dual control (which requires two people present simultaneously but each may know the full secret) and separation of duties (which divides job responsibilities to prevent fraud). Split knowledge is commonly used in key ceremonies and high-security environments.

Topics

#Security Principles#Split Knowledge#Cryptography

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