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In this project, you are required to write the java program RC4.javato implement stream cipher RC4. Specifically, your program reads thekey, plaintext and ciphertext from a file named input. txt (under the same directory of the program).Then your program encrypts the plaintext and decrypts the ciphertext. Finally, your program creates a file named output. txt (under the same directory)and writes the encryption and decryption results to the file. Please check the attached sample filesinput. text and output. txt. In input. txt: 1. First line is the key, represented by integers(base-10),separated by one blank space.
2. Second Line isthe plaintext, represented by (even number of) hexadecimal digits.
3. Third line is the ciphertext, represented by (even number of) hexadecimal digits.

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