# AES in ECB mode

The Base64-encoded content [in this file](https://depp.brause.cc/cryptopals/01/07.txt) has been encrypted
via AES-128 in ECB mode under the key

    "YELLOW SUBMARINE".

(case-sensitive, without the quotes; exactly 16 characters; I like
"YELLOW SUBMARINE" because it's exactly 16 bytes long, and now you
do too).

Decrypt it. You know the key, after all.

Easiest way: use OpenSSL::Cipher and give it AES-128-ECB as the cipher.

## Do this with code.

You can obviously decrypt this using the OpenSSL command-line tool,
but we're having you get ECB working in code for a reason. You'll
need it *a lot* later on, and not just for attacking ECB.