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Computer Engineering
1 Encryption (a). Write a program that will utilise AES for encrypting and decrypting the data from a file as follows. Your program should take 3 arguments from the command line as input. The first input should be either 0 or 1 referring to encryption or decryption, respectively. The second input is the key filename. The third input is the either the plaintext or encrypted filename. If the first argument is 0: your program will read an AES key from a file titled key.txt (passed as second argument) and then will read the plaintext from a file titled plain- text.txt (passed as third argument), encrypt the contents of plaintext.txt using the key and save the ciphertext in a file titled encrypted.txt. If the first argument is 1, your program should decrypt the contents of encrypted.txt. Sample Command-line Inputs: java 0 key.txt plaintext.txt java 1 key.txt encrypted.txt

1 Encryption (a). Write a program that will utilise AES for encrypting and decrypting the data from a file as follows. Your program should take 3 arguments from the command line as input. The first input should be either 0 or 1 referring to encryption or decryption, respectively. The second input is the key filename. The third input is the either the plaintext or encrypted filename. If the first argument is 0: your program will read an AES key from a file titled key.txt (passed as second argument) and then will read the plaintext from a file titled plain- text.txt (passed as third argument), encrypt the contents of plaintext.txt using the key and save the ciphertext in a file titled encrypted.txt. If the first argument is 1, your program should decrypt the contents of encrypted.txt. Sample Command-line Inputs: java 0 key.txt plaintext.txt java 1 key.txt encrypted.txt

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1 Encryption (a). Write a program that will utilise AES for encrypting and decrypting the data from a file as follows. Your program should take 3 arguments from the command line as input. The first input should be either 0 or 1 referring to encryption or decryption, respectively. The second input is the key filename. The third input is the either the plaintext or encrypted filename. If the first argument is 0: your program will read an AES key from a file titled key.txt (passed as second argument) and then will read the plaintext from a file titled plain- text.txt (passed as third argument), encrypt the contents of plaintext.txt using the key and save the ciphertext in a file titled encrypted.txt. If the first argument is 1, your program should decrypt the contents of encrypted.txt. Sample Command-line Inputs: java 0 key.txt plaintext.txt java 1 key.txt encrypted.txt
Transcribed Image Text:1 Encryption (a). Write a program that will utilise AES for encrypting and decrypting the data from a file as follows. Your program should take 3 arguments from the command line as input. The first input should be either 0 or 1 referring to encryption or decryption, respectively. The second input is the key filename. The third input is the either the plaintext or encrypted filename. If the first argument is 0: your program will read an AES key from a file titled key.txt (passed as second argument) and then will read the plaintext from a file titled plain- text.txt (passed as third argument), encrypt the contents of plaintext.txt using the key and save the ciphertext in a file titled encrypted.txt. If the first argument is 1, your program should decrypt the contents of encrypted.txt. Sample Command-line Inputs: java 0 key.txt plaintext.txt java 1 key.txt encrypted.txt
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