Test your basic knowledge |

CISSP Crypto Domain

Subjects : certifications, it-skills, cissp

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. OCSP; OSPF- routing protocol; Online Vulnerability Assessment Language; Orthogonal Frequency Division Multiplexing

2. Broken
initialization vector/salt
Knapsack
monoalphabetic
symmetric algorithms types

3. key storage;escrow;archival;recovery agend;multiple key pairs
RiJndael(AES)
cryptovariable
key mgmt tasks
Block Cipher

4. Integrity
Hash
steganography
message hashing
DES ECB

5. Provided by mixing key values during repeated rounds of encryption
collision
Hash Function Uses
confusion
DES CFB

6. First public key exchange system - users exchange keys over insecure medium.
modular mathematics
Asymmetric Enc provides
Diffie-Hellman Algorithm
key mgmt tasks

7. Message Authentication codes; aka message integrity code; modification detection code; cryptographic checksum; generated by running message through secret key(DES CBC) MAC is the last block generated by algorithm 64 bit
signature
Common Hash Algorithms
Exclusive Or(XOR)
CBC MAC

8. Data in readable format- red side
Diffe Helman
key archival
steganography
plaintext

9. Based on Dif Hel; provides encrypt; dig sig; and key exchange; discrete logarithms-easy to reverse engineer; main drawback is performance- slower than other algorithms
el gamal
Cipher Feedback Mode
ciphertext
cert contents

10. Cannot deny ownership / origination.
Knapsack
non-repudiation
Hash
end to end enccryption

11. Data Encryption Standard (DES) 5 Block Modes; Trple DES runs through it three times; Blowfish; IDEA; RC4; RC5
el gamal
polyalphabetic
symmetric algorithms types
cryptography

12. Relies on finding weaknesses in the hashing algorithm
brute force attack on hashing
LUC
El Gamal
IDEA

13. MD5 - SHA1
PKI
plaintext
hybrid encrypt features
Common Hash Algorithms

14. Encryption - decryption - signing - verifying
steganography
transposition cipher
Asymmetric uses
symmetric algorithms types

15. Rivest-Shamir-Adleman - factorization - used for encryption - key exchange and digital signature.
Signature
Diffe Helman
RSA
Electronic Code Book

16. characters are substituted or shifted
modular mathematics
substitution cipher
monoalphabetic
digital signatures

17. Advanced Encryption Standard
key clustering
RiJndael(AES)
symmetric Crypto
digital signatures

18. Provided by mixing up the location of plaintext throughout the cipher
cryptanalysis
symmetric algorithms types
diffusion
cryptovariable

19. Authenticity - integrity - digital signatures - storing passwords.
Hash Function Uses
initialization vector/salt
Electronic Code Book
cert contents

20. NIST and NSA - 160 bit digest
OCSP
blowfish
SHA1
RSA

21. Single authority trust; heirarchal trust; web of trust; hybrid cross certificationusesd in businesses to trust each others CA's; and DISA Model Root; intermediate; leaf at the local levels
HAVAL
trust model types
data transmission
REED D asym algorithms

22. Keys needed to decrypt cyphertext so an authorized third party can gain access
polyalphabetic
vernam cipher
scytale
key escrow

23. Both parties have same key(kept secret) exchage keys before comms begins; faster than asymmetric crypto; best suited for bulk encryption; N(N-1)/2 is the number of keys needed; File Encryption Key (FEK)
Hash
zero knowledge proof
symmetric Crypto
Hybrid Encryption

24. Has authority to remove keys from escrow;
Digital Signature Standard Algorithms
recovery agent
Knapsack
birthday paradox

25. Integrity Check Value-makes the hash with the hash algorithm
symetric
Symmetric Algorithms
ICV
running key

26. Measar cipher
monoalphabetic
modular mathematics
recovery agent
cryptography

27. Storage of keys and certs for extended period of time-normally performed by CA a trusted third party; or key holder
key archival
Knapsack
historical highlights
OCSP

28. Digital signature standard; performs integrity by SHA; uses DSA; RSA;Elyp CurveDSA
SHA1
plaintext
FIPS 186
CRL

29. Large set of possible values used to construct keys
symmetric algorithms types
certificate practice statement
cryptography
key space

30. RC(x) - 32 - 64 - 128 bit blocks - key max at 2048 bits
Rivest Cipher
key clustering
AES
Key zeroization

31. NIST 1991 - outlines authorized algorithms
Digital Signature Standard
symetric synonyms
initialization vector/salt
MD5

32. Function that takes a variable length string; and compresses and transforms it into a fixed length- output called a hash or message digest
hashing algorithm
ECC
hashing algorithm strengths
Lucifer

33. Cipher Feedback Emulates stream cipher data encrypted in smaller units than block size; plaintext pattersn concealed in XOR; previous ciphertext block is encrypted and output produced is conbined with plaintext block using XOR-to produce next ciphert
DES CFB
ICV
message hashing
cert contents

34. Published document describing: howa CA is structured;which standards are used and how certs are managed
Blowfish
CAST
Asymmetric uses
certificate practice statement

35. Easily transportable;cannot be initiated by something else; can be automatically time stamped;provides integrity by encrypting hash value;hash value generated with senders private key
DES
link encryption
digital signatures
key archival

36. Rives Shamir; adleman- based on factoring of large prime numbers-encrypt-dig sig- and key exchange variable key length 512 to 4096- strong but slow; 100 times slower than software; 1000-10000 slower than hardware encryption
RSA
hashing algorithm strengths
3DES
prime factorization

37. Based on diffie-hellman - encryption - digital signatures and key exchange.
Signature
confusion
El Gamal
Trap Door Function

38. Science of breakin the code
prime factorization
historical highlights
cryptanalysis
key escrow

39. Hides data in images - usually by LSB (least significant bit)
Hybrid Encryption
HAVAL
Public Key Infrastructure
steganography

40. 64 bit blocks of data; variable key lengths
CA
key mgmgt defined
HMAC
blowfish

41. RSA
prime factorization
IDEA
signature
REED D asym algorithms

42. SHA - RSA - Eliptical Curve (ECDSA)
Diffe Helman
Digital Signature Standard Algorithms
Common Hash Algorithms
algorithm

43. Pro's: key management cons: speed/file size
asymmetric key encryption
diffusion
Asymmetric uses
Digital Signature Standard

44. Modified md5 - v means "variable"
Asymmetric uses
Digital Signature Standard Algorithms
key space
HAVAL

45. variable block and key sizes 128; 192; 256; uses a variable number of rounds; has low memory requirements; easy to defend against timing attacks; implemented in software; hardware is costly.
AES
Common Hash Algorithms
Asymmetric uses
cryptology

46. Stream based - errors do not propagate across blocks
hashing algorithm strengths
asymmetric algorithms
Common Hash Algorithms
Output Feedback Mode

47. Symmetric for Bulk Encrypt; assym for key encapsulation- used in SSL; Email; key exchange
hybrid encrypt features
DES
Knapsack
substitution cipher

48. One-way - difficult to solve - uses factorization - private key can compute the public key
link encryption
DES
initialization vector/salt
Trap Door Function

49. Letters represented by numerical place in the alphabet
modular mathematics
Knapsack
IDEA
Asymmetric Enc provides

50. Authentication and integrity - needed when... At rest and in transit.
key mgmgt defined
caesar cipher
vigenere cipher
signature