AES Encryption and Decryption In Python Assignment

Assignment Task

Question

1. The provided source AES encryption/decryption programs are doing AES encryptions in ECB mode. Please change the source code files of the AES encryption/decryption programs, so that the encryption/decryption program is working in CBC mode (You can use the cryptopp library functions directly). Then compile, and execute the AES encryption/decryption programs. Verify the decrypted file is identical to the original plaintext file (You can use “diff” to show the difference of two files (the original file, and the decrypted file) under the linux environment.) Put the screenshots of the verification into the report.

2. Please change the source code files of the AES encryption/decryption programs, so that the encryption/decryption program is working in Counter mode (You can use the cryptopp library functions directly). Then compile, and execute the AES encryption/decryption programs. Verify the decrypted file is identical to the original plaintext file (You can use “diff” to show the difference of two files (the original file, and the decrypted file) under the linux environment.) Put the screenshots of the verification into the report.

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