Question
Create a text file that is at least 64 bytes long. Encrypt the file using the AES-128 cipher. Unfortunately, a single bit of the 30th
Create a text file that is at least 64 bytes long.
Encrypt the file using the AES-128 cipher.
Unfortunately, a single bit of the 30th byte in the encrypted file got corrupted. You can achieve this corruption using a hex editor.
Decrypt the corrupted file (encrypted) using the correct key and IV.
1. How much information can you recover by decrypting the corrupted file, if the encryption mode is ECB, CBC, CFB, or OFB, respectively?
2. Please explain why.
3. What are the implication of these differences?
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1 How much information can you recover by decrypting the corrupted file if the encryption mode is ECB CBC CFB or OFB respectively In ECB mode only one block is affected when any problem in a cipher te...
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A Balanced Introduction to Computer Science
Authors: David Reed
3rd edition
132166755, 978-0132166751
