Result: 0x66E94BD4EF8A2C3B884CFA59CA342B2E

Result: 0x140F0F1011B5223D79587717FFD9EC3A

• The second parameter, if given, will be the name of an existing file. The program will then have produce in a new file the result of the encryption (case -e) or the decryption (case -d) of the given file. For this, the CBC operating mode will be used and the initialization vector chosen will be placed at the beginning of the product file. The key used will still be in this case that formed of 16 bytes zero.

Butokuden.jpg encryption in aes-butokuden.jpg $ ./AES -d aes-butokuden.jpg Decryption of aes-butokuden.jpg in aes-aes-butokuden.jpg

• If a third parameter is given, it will be considered as a password: the program as above, except for the choice of the key. This will be in this case the summary

The key used is: 0x163F0DDA0338E504F0A2FFC8ABAC45A2 Butokuden.jpg encryption in aes-butokuden.jpg

The key used is: 0x163F0DDA0338E504F0A2FFC8ABAC45A2 Decryption of aes-butokuden.jpg in aes-aes-butokuden.jpg