Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system
First Claim
1. In a terminal of a conditional access system in which a user selects a service, the selected service being associated with a frequency, the terminal having a tuner and a secure element with at least one authorized entitlement unit number stored therein, a method of determining whether the terminal is authorized to receive the selected service, the method comprising steps of:
- receiving at least one encrypted entitlement control message corresponding to the service, wherein each entitlement control message includes a packet identifier (PID) and a payload;
decrypting each of the at least one encrypted entitlement control message in the secure element, each decrypted entitlement control message revealing at least one first entitlement number associated with the selected service, wherein the at least one authorized entitlement unit number is carried in the payload; and
determining that the terminal is authorized to receive the selected service when any first entitlement number of any decrypted entitlement control message represents any number of the at least one authorized entitlement unit number.
3 Assignments
0 Petitions
Accused Products
Abstract
A method for determining whether the terminal is authorized to receive the selected service is practiced in a terminal of a conditional access system in which a user selects a service, the selected service being associated with a frequency, the terminal having a tuner and a secure element with at least one authorized entitlement unit number stored therein. The method includes receiving at least one encrypted entitlement control message corresponding to the service, and decrypting each of the at least one encrypted entitlement control message in the secure element, each decrypted entitlement control message revealing at least one first entitlement number associated with the selected service. The method further includes determining that the terminal is authorized to receive the selected service when any first entitlement number of any decrypted entitlement control message represents any number of the at least one authorized entitlement unit number. Alternatively, the method includes receiving at least one entitlement control message corresponding to the service, and authenticating each of the at least one entitlement control message in the secure element, each authenticated entitlement control message revealing at least one first entitlement number associated with the selected service. The method further including determining that the terminal is authorized to receive the selected service when any first entitlement number of any authenticated entitlement control message represents any number of the at least one authorized entitlement unit number.
118 Citations
64 Claims
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1. In a terminal of a conditional access system in which a user selects a service, the selected service being associated with a frequency, the terminal having a tuner and a secure element with at least one authorized entitlement unit number stored therein, a method of determining whether the terminal is authorized to receive the selected service, the method comprising steps of:
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receiving at least one encrypted entitlement control message corresponding to the service, wherein each entitlement control message includes a packet identifier (PID) and a payload;
decrypting each of the at least one encrypted entitlement control message in the secure element, each decrypted entitlement control message revealing at least one first entitlement number associated with the selected service, wherein the at least one authorized entitlement unit number is carried in the payload; and
determining that the terminal is authorized to receive the selected service when any first entitlement number of any decrypted entitlement control message represents any number of the at least one authorized entitlement unit number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. In a terminal of a conditional access system in which a user selects a service, the selected service being associated with a frequency, the terminal having a tuner and a secure element with at least one authorized entitlement unit number stored therein, a method of determining whether the terminal is authorized to receive the selected service, the method comprising steps of:
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receiving at least one entitlement control message corresponding to the service, wherein each entitlement control message includes a packet identifier (PID) and a payload;
authenticating each of the at least one entitlement control message in the secure element, each authenticated entitlement control message revealing at least one first entitlement number associated with the selected service, wherein the at least one authorized entitlement unit number is carried in the payload; and
determining that the terminal is authorized to receive the selected service when any first entitlement number of any authenticated entitlement control message represents any number of the at least one authorized entitlement unit number. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. In a terminal of a conditional access system, the terminal including a tuner and a selector for selecting a service, the selected service being identified by a corresponding service number and frequency, a conditional access apparatus comprising:
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a processor having plural control modules, a first control module controlling the processor to receive at least one encrypted entitlement control message corresponding to the selected service; and
a secure element having at least one authorized entitlement unit number stored therein and having plural control modules, a second control module controlling the secure element to decrypt each of the at least one encrypted entitlement control message, each decrypted entitlement control message revealing at least one first entitlement number associated with the selected service, a third control module controlling the secure element to determine that the terminal is authorized to receive the selected service when any first entitlement number of any decrypted entitlement control message represents any number of the at least one authorized entitlement unit number. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. In a terminal of a conditional access system, the terminal including a tuner and a selector for selecting a service, the selected service being identified by a corresponding service number and frequency, a conditional access apparatus comprising:
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a processor having plural control modules, a first control module controlling the processor to receive at least one entitlement control message corresponding to the selected service; and
a secure element having at least one authorized entitlement unit number stored therein and having plural control modules, a second control module controlling the secure element to authenticate each of the at least one entitlement control message, each entitlement control message revealing at least one first entitlement number associated with the selected service, a third control module controlling the secure element to determine that the terminal is authorized to receive the selected service when any first entitlement number of any authenticated entitlement control message represents any number of the at least one authorized entitlement unit number. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification