Next, BoomBox AES-encrypts the host information string above using the hardcoded encryption key “123do3y4r378o5t34onf7t3o573tfo73” and initialization vector (IV) value “1233t04p7jn3n4rg”. To masquerade the data as contents of a PDF file, BoomBox prepends and appends the magic markers for PDF to the AES-encrypted host information string above