1			12
			2											15
	3
																					17
										14
			4			13
	10
																		16
						5
	6		11
					7
					8
9

Across

1. A cipher that encrypts a block of plaintext at a time and produces a corresponding block of ciphertext

2. The original message before being encrypted by a cipher

3. A cryptanalysis technique that involves analyzing the frequency of letters or characters in ciphertext to identify patterns

4. The process of converting plaintext into ciphertext using a cipher

5. The total number of possible keys that can be used by a cipher

6. A cipher that rearranges the order of the plaintext without changing the actual letters or characters

7. Communication that is encrypted and protected from unauthorized access

8. The vertical lines of the zigzag pattern used to read off the ciphertext for the Rail Fence Cipher

9. A cryptanalysis technique that involves trying every possible key to break a cipher

Down

10. The process of converting ciphertext into plaintext using a cipher

11. A set of rules or steps that describe how to solve a problem or perform a task

12. The encrypted message produced by applying a cipher to plaintext

13. The horizontal lines of the zigzag pattern used to write the plaintext for the Rail Fence Cipher

14. A pattern that moves in a back-and-forth motion like a zigzag

15. The size or length of the key used by a cipher

16. A transposition cipher that rearranges plaintext by writing it in a zigzag pattern over a predetermined number of rows before reading off the ciphertext from the columns.

17. The practice of analyzing and breaking codes and ciphers

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