Smartcard encryption cycling

A method for encrypting multiple television channels, the method comprising:

• designating, by the television service provider system, a first television channel of a plurality of television channels to be protected via a first entitlement control message using a first encryption scheme, wherein the plurality of television channels are transmitted using a single transponder stream;
• designating, by the television service provider system, a second television channel of the plurality of television channels to be protected via a second entitlement control message encrypted using a second encryption scheme while the first television channel of the plurality of television channels is protected using the first encryption scheme;
• and transmitting, by the television service provider system, the first entitlement control message encrypted using the first encryption scheme and a second entitlement control message encrypted using the second encryption scheme to a plurality of television receivers, wherein:
• data from the first entitlement control message is used for descrambling of the first television channel by the plurality of television receivers, and data from the second entitlement control message is used for descrambling of the second television channel by the plurality of television receivers;
• and
• after the television service provider has transmitted the first entitlement control message and the second entitlement control message:
• designating, by the television service provider system, the first television channel of the plurality of television channels to be protected via a third entitlement control message encrypted using the second encryption scheme;
• designating, by the television service provider system, the second television channel of the plurality of television channels to be protected via a fourth entitlement control message encrypted using the first encryption scheme while the first television channel of the plurality of television channels is protected using the second encryption scheme;
• and transmitting, by the television service provider system, the third entitlement control message encrypted using the second encryption scheme and the fourth entitlement control message encrypted using the first encryption scheme, wherein:
• the third entitlement control message is used for decryption
• of the first television channel, and the fourth entitlement control message is used for decryption of the second television channel.

A non-transitory processor-readable medium for encrypting multiple television channels, comprising processor-readable instructions configured to cause one or more processors to:

• designate a first television channel of a plurality of television channels to be protected via a first entitlement control message using a first encryption scheme, wherein the plurality of television channels are transmitted using a single transponder stream;
• designate a second television channel of the plurality of television channels to be protected via a second entitlement control message encrypted using a second encryption scheme while the first television channel of the plurality of television channels is protected using the first encryption scheme;
• and cause the first entitlement control message encrypted using the first encryption scheme and a second entitlement control message encrypted using the second encryption scheme to be transmitted to a plurality of television receivers, wherein:
• data from the first entitlement control message is used for descrambling of the first television channel by the plurality of television receivers, and data from the second entitlement control message is used for descrambling of the second television channel by the plurality of television receivers;
• wherein the processor-readable instructions, when executed by the one or more processors, cause the one or more processors to:
• after the television service provider has transmitted the first entitlement control message and the second entitlement control message:
• designate the first television channel of the plurality of television channels to be protected via a third entitlement control message encrypted using the second encryption scheme;
• designate the second television channel of the plurality of television channels to be protected via a fourth entitlement control message encrypted using the first encryption scheme while the first television channel of the plurality of television channels is protected using the second encryption scheme;
• and cause the third entitlement control message encrypted using the second encryption scheme and the fourth entitlement control message encrypted using the first encryption scheme to be transmitted, wherein:
• the third entitlement control message is used for decryption of the first television channel, and the fourth entitlement control message is used for decryption of the second television channel.