Question 1

On what principle did Julius Caesar's cryptographic messages function?

Accepted Answer

A)  Each alphabetic letter was replaced by a corresponding number
B)  Each alphabetic letter was represented by a seemingly random symbol
C)  Each alphabetic letter was shifted three places down in the alphabet
D)  Each alphabetic letter was shifted 5 places up in the alphabet.E) A) and B)
F) None of the above

Question 2

Match the following terms to the appropriate definitions
-A temporary key that is used only once before it is discarded.​

Accepted Answer

A)  Advanced Encryption Standard (AES) 
B)  Block cipher
C)  Ciphertext
D)  Data Encryption Standard (DES) 
E)  Diffie-Hellman (DH) F) Elliptic curve cryptography (EC
C)  G) Ephemeral keyH) Private keyI) Public keyJ) Stream cipherK) F) and J)
L) E) and I)

Question 3

What type of cryptography uses two keys instead of just one, generating both a private and a public key?

Accepted Answer

A)  Symmetric
B)  Asymmetric
C)  Shared
D)  OpenE) C) and D)
F) A) and C)

Question 4

After the DES cipher was broken and no longer considered secure, what encryption algorithm was made as its successor?

Accepted Answer

A)  AES
B)  Twofish
C)  3DES
D)  RSAE) None of the above
F) All of the above

Question 5

What cryptographic method, first proposed in the mid-1980s, makes use of sloping curves instead of large prime numbers?

Accepted Answer

A)  FCC
B)  RSA
C)  ECC
D)  IKEE) B) and C)
F) A) and C)

Question 6

Match the following terms to the appropriate definitions
-​A symmetric cipher that was approved by the NIST in late 2000 as a replacement for DES

Accepted Answer

A)  Advanced Encryption Standard (AES) 
B)  Block cipher
C)  Ciphertext
D)  Data Encryption Standard (DES) 
E)  Diffie-Hellman (DH) F) Elliptic curve cryptography (EC
C)  G) Ephemeral keyH) Private keyI) Public keyJ) Stream cipherK) C) and D)
L) A) and E)

Question 7

Match the following terms to the appropriate definitions
-​A symmetric block cipher that uses a 56-bit key and encrypts data in 64-bit blocks

Accepted Answer

A)  Advanced Encryption Standard (AES) 
B)  Block cipher
C)  Ciphertext
D)  Data Encryption Standard (DES) 
E)  Diffie-Hellman (DH) F) Elliptic curve cryptography (EC
C)  G) Ephemeral keyH) Private keyI) Public keyJ) Stream cipherK) E) and I)
L) A) and B)

Question 8

The asymmetric cryptography algorithm most commonly used is:

Accepted Answer

A)  AES
B)  RSA
C)  Twofish
D)  BlowfishE) B) and D)
F) None of the above

Question 9

In information technology, ____________________ is the process of proving that a user performed an action, such as sending an e-mail message or a specific document.
​Match the following terms to the appropriate definitions.​

Accepted Answer

The answer of In information technology, ____________________ is the process...

Question 10

Match the following terms to the appropriate definitions
-Data that has been encrypted.​

Accepted Answer

A)  Advanced Encryption Standard (AES) 
B)  Block cipher
C)  Ciphertext
D)  Data Encryption Standard (DES) 
E)  Diffie-Hellman (DH) F) Elliptic curve cryptography (EC
C)  G) Ephemeral keyH) Private keyI) Public keyJ) Stream cipherK) E) and I)
L) C) and D)

Question 11

Discuss how HMAC works.

Accepted Answer

HMAC begins with a shared secret key tha...

Question 12

Describe the RIPEMD hash.

Accepted Answer

Another hash was developed by the Resear...

Question 13

Explain hashing.

Accepted Answer

Hashing is a process for creating a uniq...

Question 14

A(n) ____________________ is a method used by operating systems to store, retrieve, and organize files.

Accepted Answer

The answer of A(n) ____________________ is a method used by...

Question 15

If using the MD5 hashing algorithm, what is the length to which each message is padded?

Accepted Answer

A)  32 bits
B)  64 bits
C)  128 bits
D)  512 bitsE) All of the above
F) B) and D)

Question 16

The SHA-1 hashing algorithm creates a digest that is how many bits in length?

Accepted Answer

A)  ​96 bits
B)  ​128 bits
C)  ​160 bits
D)  ​192 bitsE) B) and C)
F) A) and D)

Question 17

Which of the following is not one of the functions of a digital signature?

Accepted Answer

A)  Verification of the sender
B)  Prevention of the sender from disowning the message
C)  Prove the integrity of the message
D)  Protect the public keyE) None of the above
F) B) and C)

Question 18

Which type of cryptographic algorithm takes an input string of any length, and returns a string of any requested variable length?

Accepted Answer

A)  Substitution
B)  Block
C)  Loop
D)  SpongeE) A) and B)
F) A) and C)

Question 19

A key that is generated by a symmetric cryptographic algorithm is said to be a:

Accepted Answer

A)  private key
B)  public key
C)  symmetric key
D)  shared keyE) A) and D)
F) All of the above

Question 20

Describe how Message Digest2 (MD2) works.

Accepted Answer

Message Digest 2 (MD2) takes plaintext o...

Exam 5: Basic Cryptography

Describe how Message Digest2 (MD2) works.

Correct AnswerverifiedMessage Digest 2 (MD2) takes plaintext o...View AnswerShow Answer

Describe the RIPEMD hash.

Correct AnswerverifiedAnother hash was developed by the Resear...View AnswerShow Answer

The SHA-1 hashing algorithm creates a digest that is how many bits in length?

Correct AnswerverifiedShow Answer

A key that is generated by a symmetric cryptographic algorithm is said to be a:

Correct AnswerverifiedShow Answer

After the DES cipher was broken and no longer considered secure, what encryption algorithm was made as its successor?

Correct AnswerverifiedShow Answer

What cryptographic method, first proposed in the mid-1980s, makes use of sloping curves instead of large prime numbers?

Correct AnswerverifiedShow Answer

What type of cryptography uses two keys instead of just one, generating both a private and a public key?

Correct AnswerverifiedShow Answer

Match the following terms to the appropriate definitions -Data that has been encrypted.​

Correct AnswerverifiedShow Answer

The asymmetric cryptography algorithm most commonly used is:

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Which of the following is not one of the functions of a digital signature?

Correct AnswerverifiedShow Answer

Discuss how HMAC works.

Correct AnswerverifiedHMAC begins with a shared secret key tha...View AnswerShow Answer

On what principle did Julius Caesar's cryptographic messages function?

Correct AnswerverifiedShow Answer

Match the following terms to the appropriate definitions -​A symmetric block cipher that uses a 56-bit key and encrypts data in 64-bit blocks

Correct AnswerverifiedShow Answer

In information technology, ____________________ is the process of proving that a user performed an action, such as sending an e-mail message or a specific document. ​Match the following terms to the appropriate definitions.​

Correct AnswerverifiedShow Answer

Which type of cryptographic algorithm takes an input string of any length, and returns a string of any requested variable length?

Correct AnswerverifiedShow Answer

A(n) ____________________ is a method used by operating systems to store, retrieve, and organize files.

Correct AnswerverifiedShow Answer

If using the MD5 hashing algorithm, what is the length to which each message is padded?

Correct AnswerverifiedShow Answer

Match the following terms to the appropriate definitions -​A symmetric cipher that was approved by the NIST in late 2000 as a replacement for DES

Correct AnswerverifiedShow Answer

Match the following terms to the appropriate definitions -A temporary key that is used only once before it is discarded.​

Correct AnswerverifiedShow Answer

Explain hashing.

Correct AnswerverifiedHashing is a process for creating a uniq...View AnswerShow Answer

Correct Answer
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Message Digest 2 (MD2) takes plaintext o...
View Answer

Correct Answer
verified
Another hash was developed by the Resear...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Match the following terms to the appropriate definitions -Data that has been encrypted.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
HMAC begins with a shared secret key tha...
View Answer

Correct Answer
verified

Match the following terms to the appropriate definitions -A symmetric block cipher that uses a 56-bit key and encrypts data in 64-bit blocks

Correct Answer
verified

In information technology, ____________________ is the process of proving that a user performed an action, such as sending an e-mail message or a specific document. Match the following terms to the appropriate definitions.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Match the following terms to the appropriate definitions -A symmetric cipher that was approved by the NIST in late 2000 as a replacement for DES

Correct Answer
verified

Match the following terms to the appropriate definitions -A temporary key that is used only once before it is discarded.

Correct Answer
verified

Correct Answer
verified
Hashing is a process for creating a uniq...
View Answer