EC-Council
312-50V9 · Question #256
312-50V9 Question #256: Real Exam Question with Answer & Explanation
The correct answer is A: Has to be unforgeable, and has to be authentic.. A valid digital signature must be unforgeable - tied cryptographically to the signer - and authentic, meaning it verifiably originates from the claimed signer.
Question
What two conditions must a digital signature meet?
Options
- AHas to be unforgeable, and has to be authentic.
- BHas to be legible and neat.
- CMust be unique and have special characters.
- DHas to be the same number of characters as a physical signature and must be unique.
Explanation
A valid digital signature must be unforgeable - tied cryptographically to the signer - and authentic, meaning it verifiably originates from the claimed signer.
Common mistakes.
- B. Legibility and neatness are physical handwriting attributes and have no meaning in a cryptographic digital signature context.
- C. Digital signatures do not have a 'character count' or 'special character' requirement; their structure is defined by mathematical operations on key pairs.
- D. Digital signatures have no relationship to the length of a physical signature, and 'uniqueness' alone without unforgeability is insufficient as a security property.
Concept tested. Digital signature security properties
Reference. https://csrc.nist.gov/publications/detail/fips/186/5/final
Community Discussion
No community discussion yet for this question.