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The theory of card sharing as a potential attack vector on pay TV encryption was provided in the book European Scrambling Systems by John McCormac in 1996 leading to the term "McCormac Hack" to be used to describe early card-sharing systems. Once a client receives this key, they can decrypt the encrypted content as though they were using their own subscription card.
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#Cccam box software#
Typically, a legitimate smart card is attached to a host digital television receiver, which is equipped with software to share the decrypted 64-bit "control word" key over a computer network, such as the Internet. This is achieved by electronically sharing a part of the legitimate conditional access smart card's output data, enabling all recipients to gain simultaneous access to scrambled DVB streams, held on the encrypted television network. JSTOR ( August 2014) ( Learn how and when to remove this template message)Ĭard sharing, also known as control word sharing, is a method of allowing multiple clients or digital television receivers to access a subscription television network with only one valid subscription card.Unsourced material may be challenged and removed.
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