Loop cards are a great game that can be played individually or as a class. They are perfect for review key vocabulary or questions at the end of a topic or when revising for an exam.
Instructions
Cut out the cards from the paper horizontally (but don't cut them in half!) and then shuffle them.
Now start joining each question on the right hand side of the card to the matching answer on the next card.
Carry on until all the cards loop together and you have competed the game!
Hint: Make sure that you set your paper to portrait to print 4 cards per sheet of A4 paper.
A cipher that replaces each plaintext letter or symbol with a different letter or symbol to create the ciphertext.
Autokey Cipher
"A polyalphabetic cipher similar to the Vigenere Cipher, but using the plaintext itself as part of the key sequence in order to overcome a weakness observed in the original Vigenere Cipher."
Brute Force Attack
A cryptanalytic technique that involves trying every possible key until the correct one is found. This is usually only feasible for small key sizes.
Decryption
The process of converting encoded text to its original form by employing a deciphering algorithm and the identical confidential key utilized during encryption.
Polyalphabetic Cipher
A cipher that uses multiple substitution alphabets to encrypt the plaintext. The Vigenere Cipher is an example of this type of cipher.
Cryptanalysis
The study and practice of breaking codes and ciphers, usually with the goal of deciphering encrypted messages without knowledge of the secret key.
Rail Fence Cipher
A transposition cipher that is created by writing the plaintext horizontally in a zigzag pattern, and then reading off the ciphertext vertically.
Vigenere Cipher
A method of encrypting alphabetic text using a series of different Caesar ciphers based on the letters of a keyword.
Frequency Analysis
A technique used to analyze and decipher encrypted messages by studying the frequency of occurrence of letters or symbols in the ciphertext.
Kasiski Examination
A cryptanalytic technique used to try and discover the length of the keyword used in a Vigenere Cipher by detecting repeating patterns in the ciphertext.