EuroCrypt is a Conditional Access System used to protect television content from viewing-piracy by controlling access to channels for only paid-subscribers. EuroCrypt was used with analogue television transmissions and was most widely used in the Scandinavian countries up until mid-2006. EuroCrypt evolved into the Viaccess Conditional Access Systems for digital television broadcasts that currently enjoys wide use in Europe.
EuroCrypt could be used by both receivers with embeeded keys, and receivers that contained card slots for users to decode the protected content. EuroCrypt was partially-compromised by the use of hacked or cloned smart cards, a practice that was widely used.