Digital Signatures MCQs

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1. : What is the main purpose of a digital signature?





2. : Which algorithm is commonly used for generating digital signatures?





3. : Who verifies a digital signature?





4. : A digital signature is created using which key?





5. : A digital signature is verified using which key?





6. : Which of the following ensures non-repudiation in communication?





7. : Digital signatures are based on the principle of:





8. : Which hashing algorithm was widely used with digital signatures but now considered weak?





9. : What is signed in a digital signature?





10. : Which organization first standardized digital signatures?





11. : What is the main difference between a digital signature and a handwritten signature?





12. : Which of the following is a digital signature standard?





13. : Which cryptographic method does DSS (Digital Signature Standard) primarily use?





14. : Which of the following is NOT a property of digital signatures?





15. : In which year did the U.S. adopt the Digital Signature Standard (DSS)?





16. : What is the role of a Certification Authority (CA) in digital signatures?





17. : Which document format most commonly uses digital signatures?





18. : What does a digital certificate contain?





19. : Which of the following attacks aims at forging a digital signature?





20. : Which public key infrastructure (PKI) element verifies digital signatures?





21. : Which of the following provides higher security for digital signatures?





22. : Which key is kept secret in digital signatures?





23. : Which feature of digital signatures helps prove the identity of the sender?





24. : Which country first legally recognized digital signatures?





25. : What does PKCS stand for in the context of digital signatures?





26. : Which signature scheme is widely used in Bitcoin?





27. : Which of the following is considered the strongest digital signature algorithm?





28. : What is the output length of SHA-256 used in digital signatures?





29. : Which factor directly affects the speed of digital signature creation?





30. : Which process is involved before applying a digital signature?





31. : Which is considered more efficient for mobile devices in digital signatures?





32. : Which is a drawback of digital signatures?





33. : Which of these verifies whether a digital certificate is valid?





34. : Which of the following is NOT required for a digital signature system?





35. : In blockchain systems, what role do digital signatures play?





36. : Which of the following verifies if a digital certificate is still active?





37. : Which is NOT an example of a digital signature algorithm?





38. : What is the first step in verifying a digital signature?





39. : Which of the following adds legal enforceability to digital signatures?





40. : Which of the following standards specify electronic signatures in Europe?





41. : Which type of attack focuses on breaking weak hash functions in digital signatures?





42. : What is the key length commonly used for RSA digital signatures today?





43. : Which of these ensures that a signed message has not been altered?





44. : What is the main benefit of using elliptic curve cryptography for signatures?





45. : In digital signatures, who generates the hash of the message?





46. : Which hash algorithm is most recommended for new digital signature systems?





47. : Which of these is the strongest guarantee provided by digital signatures?





48. : Which law in the U.S. gives legal recognition to digital signatures?





49. : Which part of the PKI hierarchy ultimately trusts all digital certificates?





50. : Which is an advanced digital signature scheme that supports multiple signers?





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