Download the ciphertext linked to this question. Upload it as a file in OpenSSL on Cryptool Online. Using the 'Encrypt & Decrypt' tab, decrypt this file using the aes-256-ctr symmetrical cipher. Ensure the passphrase is cryptography and leave the Initialization Vector (IV) to be Automatic (PBKDF2). Ensure the options: Salt and Base64 are selected.

The ciphertext can be found by the quiz link on the Module Moodle homepage and the file name is "ciphertext_4.data".

NB: If you're unable to download the file, then open it and copy the contents into a blank text file. Save and use that.