Security+Q3

Changing the original text to a secret message using cryptography is known as which of the following?

• encryption

• hashing

• algorithm

• coding

A mathematical value entered into the algorithm to produce ciphertext, or text that is “scrambled” is known as which of the following?

• cipher

• cleartext

• key

• blocktext

The process of proving that a user performed an action, such as sending an email message, is known as which of the following?

• steganography

• obfuscation

• availability

• non-repudiation

Which cryptography algorithm was approved by the NIST in late 2000 as a replacement for DES?

• RC1

• AES

• IDEA

• Blowfish

Cryptography can also be applied to entire disks. This is known as which of the following?

• Elliptic Curve Cryptography

• Digital Signature Algorithm

• Trusted Platform Module

• Full disk encryption

Which encryption option is essentially a chip on the motherboard of the computer that provides cryptographic services?

• SED

• TPM

• FDE

• PGP

____ cryptographic algorithms use the same single key to encrypt and decrypt a message.

Whereas cryptography scrambles a message so that it cannot be viewed, steganography does not hide the existence of the data.

• true

• false

Asymmetric cryptographic algorithms is also known as private key cryptography.

• true

• false

Cryptography is the science of transforming information into an unintelligible form while it is being transmitted or stored so that unauthorized users cannot access it.

• true

• false