Vigenere-Cipher

Example:

Plaintext: ATTACKATDAWN

Key: LEMONLEMONLE

Ciphertext: LXFOPVEFRNHR

To decrypt just enter the key you entered during encryption.

Playfair-Cipher

Example:

Plaintext: attackatdawn1

Key: 11111

Ciphertext: dqvc1ndq1bxmcu

To decrypt just enter the key you entered during encryption. (Decryption is not perfect and ideally would have to be fixed)

Hill-Cipher

Example:

Plaintext: TEXT

Key: HILLHILLHILLHILL

Ciphertext: 79iQ

To decrypt just enter the key you entered during encryption.