Exam 5: Cryptography

Explain two ways encryption was done in ancient times without computers.

Encrypting a message by simply rearranging the order of the letters is a function of the

The process for protecting intellectual property from unauthorized use is called _______________

A collision attack is type of denial-of-service flooding attack that causes the number of collisions on the network to increase and thus bring down the network.

All of the following are cryptographic applications EXCEPT:

Bob connects to a company web site.His browser indicates that the digital certificate of the web site is valid.This application of encryption is an example of

When a message sent by a user is digitally signed with a private key,the person will not be able to deny sending the message.This application of encryption is an example of

All of the following are asymmetric encryption algorithms EXCEPT:

_______________ puts the plaintext through a simplified cipher to try to deduce what the key is likely to be in a full version of the cipher.

_______________ are functions that difficult to process without the key but easy to process when you have the key.

Which of the following is NOT a hashing algorithm

Hiding a text file in a jpg file is an example of steganography.

Hashing functions are special mathematical functions that performs a two-way encryption.

All of the following are symmetric encryption algorithms EXCEPT:

DES,AES,RSA,and ECC are all examples of symmetric encryption.

_______________ is a form of cryptography technology that can detect the interception of transmitted key bits.

The Vigenère cipher is a polyalphabetic substitution cipher.

The Vigenère cipher works as a

The art of secret writing that enables an individual to hide the contents of a message from all but the intended recipient is called

Decryption is the process of creating ciphertext from plaintext.