Unit 1: Cryptograpy

Which of the following options correctly defines the Brute force attack?

• Brutally forcing the user to share the useful information like pins and passwords.

• Trying every possible key to decrypt the message.

• One entity pretends to be some other entity

• The message or information is modified before sending it to the receiver.

a secret or disguised way of writing; a code.

• cipher

• decrypt

• Vigenere

the number of characters to shift the cipher alphabet

• Morse Code

• cipher

• decrypt

• key

Change a message written in code into plaintext or into the understandable language

• cipher

• enigma machine

• brute force

• decrypt

convert (information or data) into a cipher or code, especially to prevent unauthorized access.

• Vigenere

• Turing

• decipher

• encrypt

a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet

• Vigenere

• Caesar Cipher

• CRIBS

• cryptography

Looking for how often certain letters appear in ciphertext and matching it with the patterns of our language.

• brute force

• CRIBS

• frequency analysis

• Morse Code

a method of encrypting alphabetic text by using a series of interwoven Caesar ciphers, based on the letters of a keyword. It employs a form of polyalphabetic substitution.

• Caesar cipher

• Vignere

• Key

• brute force

the art of writing or solving codes.

• decipher

• brute force

• key

• cryptography

A string of text that has been converted to a secure form using encryption.

• encryption

• decryption

• ciphertext

• plaintext