openssl enc -aes-128-cbc -d -in task3-encrypted-cbc.txt -out task3-decrypted-cbc.txt \
-K 00112233445566778889aabbccddeeff \
-iv 0102030405060708
openssl enc -aes-128-ecb -d -in task3-encrypted-ecb.txt -out task3-decrypted-ecb.txt \
-K 00112233445566778889aabbccddeeff \
-iv 0102030405060708
openssl enc -aes-128-cfb -d -in task3-encrypted-cfb.txt -out task3-decrypted-cfb.txt \
-K 00112233445566778889aabbccddeeff \
-iv 0102030405060708
openssl enc -aes-128-ofb -d -in task3-encrypted-ofb.txt -out task3-decrypted-ofb.txt \
-K 00112233445566778889aabbccddeeff \
-iv 0102030405060708