FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 8: Cryptography

Show Answer

Share

---

All types

Filters

Study Flashcards

Question 21

Short Answer

Review LaterAdd Note

Review Later

In the context of a PKI, a(n) ____________________ authority operates under the trusted collaboration of the certificate authority and can be delegated day-to-day certification functions, such as verifying registration information about new registrants, generating end-user keys, revoking certificates, and validating that users possess a valid certificate.

Correct Answer

verified

Show Answer

Question 22

Multiple Choice

Review LaterAdd Note

Review Later

Digital signatures should be created using processes and products that are based on the __________.

A) DSS
B) NIST
C) SSL
D) HTTPS

E) A) and B)
F) A) and C)

Correct Answer

verified

Show Answer

Question 23

True/False

Review LaterAdd Note

To encipher means to decrypt, decode, or convert ciphertext into the equivalent plaintext. _________________________

A cryptovariable is a value representing the application of a hash algorithm on a message.

Internet Protocol Security is designed to protect data integrity, user confidentiality, and authenticity at the IP packet level. _________________________

Within a PKI, a(n) registration authority issues, manages, authenticates, signs, and revokes users' digital certificates, which typically contain the user name, public key, and other identifying information. _________________________

In a book cipher, the key consists of a list of codes representing the page number, line number, and word number of the plaintext word. _________________________

A __________ is a key-dependent, one-way hash function that allows only specific recipients (symmetric key holders) to access the message digest.

Also known as the one-time pad, the ____________________ cipher, which was developed at AT&T, uses a set of characters only one time for each encryption process.

S-HTTP is an extended version of Hypertext Transfer Protocol that provides for the encryption of protected e-mail transmitted via the Internet between a client and server. _________________________

Encryption is the process of converting the ciphertext message back into plaintext so that it can be readily understood. _________________________

____________________ is the process of making and using codes to secure the transmission of information.

Digital ____________________ are public-key container files that allow computer programs to validate the key and identify to whom it belongs.

A digital ____________________ is an electronic document or container file that contains a key value and identifying information about the entity that controls the key.

In 1917, Gilbert S. Vernam, an AT&T employee, invented a polyalphabetic cipher machine that used a non-repeating random key.

In transport mode the entire IP packet is encrypted and is then placed as the content portion of another IP packet. _________________________

__________ is the current federal information processing standard that specifies a cryptographic algorithm used within the U.S. government to protect information in federal agencies that are not a part of the national defense infrastructure.

The ____________________ cipher simply rearranges the values within a block to create the ciphertext.

A message ____________________ is a fingerprint of the author's message that is compared with the recipient's locally calculated hash of the same message.

You cannot combine the XOR operation with a block cipher operation.