WGU - Intro to Cryptography - D334 ( 35 questions with 100% correct answers )

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35 Terms

1
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DES block size and key size?

64bit block size, 56bit key size

2
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3DES block size and key size?

64bit block size, 112bit key size

3
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AES block size and key size?

128bit block size, 128, 192, or 256bit key size

4
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IDEA block size and key size?

64bit block size, 128bit key size

5
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Skipjack block size and key size?

64bit block size, 80bit key size

6
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Blowfish block size and key size?

64bit block size, 32-448bit key size (commonly 128, 192, or 256)

7
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Twofish block size and key size?

128bit block size, 1-256bit key size (commonly 128, 192, or 256)

8
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RC5 block size and key size?

32, 64 or 128bit block size, 0-2048bit key size

9
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RC2 block size and key size?

64bit block size, 1-128bit key size (recommended minimum 40)

10
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RC6 block size and key size?

Variable bit block size (commonly 128), variable bit key size (commonly 128, 192 or 256)

11
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XTEA block size and key size?

64bit block size, 128bit key size

12
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MD2 hash value?

128bit

13
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MD5 hash value?

128bit

14
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MD4 hash value?

128bit

15
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MD6 hash value?

1-512bit

16
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SHA-1 hash value?

160bit

17
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SHA-2 hash value?

256, 384, or 512bit

18
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SHA-3 hash value?

Variable

19
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SHA-256 hash value?

256bit

20
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SHA-512 hash value?

512bit

21
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List symmetric block ciphers:

3DES, DES, AES, Twofish, IDEA, RC2/RC5/RC6, Blowfish, Skipjack, Camelia, XTEA

22
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List symmetric stream ciphers:

RC4 & ChaCha

23
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List asymmetric ciphers:

DH, ECC, El Gamal, RSA

24
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What should you use to import/export .509 certificates that are a part of a chain of trust?

PKCS #12

25
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What certificate mgmt process includes key recovery?

Issued

26
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What algorithm is used to generate the thumbprint of a certificate?

SHA-1

27
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What is the maximum length of encryption keys using WEP?

40bits

28
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What cipher is used with WEP?

RC4

29
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How does TKIP improve WPA over WEP?

Hashes the IV and secret key

30
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Which cipher uses a grid to map letters to numeric values?

Bifid

31
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Which cipher uses a 5x5 matrix?

Playfair

32
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Who broke the Vigenere cipher?

Kasiski

33
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What is the key size for RC4 with WEP?

40 bits

34
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Wireless security standard that uses a 128bit RC4 stream cipher?

WPA

35
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NIST specification for the encryption of electronic information?

AES