Exam 21: Cryptography and Security

Symmetric encryption is generally thought to be more secure than asymmetric encryption.

A(n)____________________ is a special word,phrase,or binary number that is used during encryption or decryption to manipulate the data.

A JPG image is a complex data structure containing compressed DCT coefficients for ____ blocks of pixels.

____ is a fascinating and possibly dangerous technique for hiding one form of information inside another.

Match each item with a statement below. -Involves taking encrypted information and putting it back into the original form

The ____________________ of the WAV file determines how much data can be hidden inside it.

Discuss the encryption strength of symmetric and asymmetric encryption.

A(n)____________________ cipher is an algorithm that encrypts or decrypts blocks of data,such as 64-bit or 128-bit chunks of information at a time.

Hashed data can be unhashed and turned back into their original form.

Symmetric encryption algorithms use one key for both encryption and decryption.

Describe symmetric encryption.

How is data hidden inside a WAV?

Asymmetric encryption algorithms use ____________________ keys to perform the encryption and decryption.

Match each item with a statement below. -Two keys are used to encrypt and decrypt the data

The power of a particular encryption technique is based on the ____.

The ____ determines the level of data protection provided by the encryption technique.

Match each item with a statement below. -Involves taking data and coding it into a different,unreadable form

____________________ is a technique to detect changes to information rather than encrypt and decrypt information.

Match each item with a statement below. -The process to change something easy to read into something that is difficult to read

Even the best encryption algorithm can be outdone by improper use.