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

Across

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

2. The practice of analyzing and breaking codes and ciphers

3. Communication that is encrypted and protected from unauthorized access

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

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

6. 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.

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

8. The original message before being encrypted by a cipher

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

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

Down

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

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

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

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

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

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

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

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