The key size of DES is

  1. Home

Question:
The key size of DES is

1.56 bits

2.64 bits

3. 128 bits

4.168 bits

Posted Date:-2022-05-25 01:36:11

More MCQS Questions and answers

  1. A cryptographic hash function has variable output length.
  2. A set of numbers is called as super increasing if
  3. CDMA rejects
  4. CDMA uses
  5. Cipher system can be solved effectively by statistically using
  6. Data compression includes
  7. Encryption transformations are known as
  8. Euler’s totient function is determined by
  9. Examples of hash functions are
  10. For digital signatures private key cryptosystem is used.
  11. For n input bits the number of substitution patterns are
  12. Frequency planning is very essential in
  13. In a trapdoor function, the functions are easy to go in
  14. In cipher feedback method, encryption is done on
  15. In digital communication, interaction between ______ is possible.
  16. In public key cryptosystem _____ keys are used for encryption and decryption.
  17. In public key cryptosystem which is kept as public?
  18. In stream encryption, the key sequence repeats itself.
  19. In this Merkle Hellman method same key is used for encryption and decryption.
  20. In transposition, the plaintext letters are
  21. In which method, key-stream is generated independently?
  22. Knapsack problem can be solved by
  23. Merkle hellman is a symmetric cryptosystem.
  24. PGP offers _____ block ciphers for message encryption.
  25. PGP system uses
  26. Pretty good privacy (PGP) security system uses
  27. Pretty good privacy program is used for
  28. Private key algorithm is used for _____ encryption and public key algorithm is used for _____ encryption.
  29. Processing gain is the ratio of message bandwidth to signal bandwidth.
  30. Public key cryptosystem is also known as
  31. Public key cryptosystem is used for the encryption of
  32. Public key cryptosystem uses same key for both encryption and decryption.
  33. Some advantages of spread spectrum are
  34. Synchronous ciphers uses
  35. The key size of DES is
  36. The substitution of the letters are done
  37. These three ciphers can operate of ______ of plaintext and cipher text.
  38. What is the key size allowed in PGP?
  39. Which algorithm can be used to sign a message?
  40. Which algorithm is used for public key encryption?
  41. Which are called the block ciphers?
  42. Which block cipher has key length of 128 bits?
  43. Which has a key length of 128 bits?
  44. Which is better for avoiding jamming?
  45. Which is more bandwidth efficient?
  46. Which is more simpler to implement?
  47. Which is more suitable when large number of transmitters are used?
  48. Which operation is used in encryption using IDEA?
  49. Which should be kept as a secret in public key cryptosystem?
  50. Which uses orthogonal codes?
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!