System and method for using a streaming protocol
First Claim
1. A distribution point configured to use a broadcaster component of a streaming protocol that enables a broadcaster to establish a stream on the distribution point, the distribution point comprising:
- a protocol interface structured and arranged to establish distribution of the stream on the distribution point using a single establishment message, the single establishment message comprising;
an expectation parameter indicating how the distribution point should respond if the streaming message is accepted, a user agent parameter enabling software on the broadcaster to self identify, a protocol identifier, a broadcaster identifier, and a content type identifier; and
a stream distribution engine structured and arranged to enable one or more listeners to access the stream.
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Accused Products
Abstract
An initialization vector (IV) is employed to decrypt a block of a stream that has been encrypted with Cypher Block Chaining (CBC) encryption, without requiring decryption of previous blocks within the stream. For example, a listener who accesses a distribution point to retrieve encrypted content authenticates himself to an application server that regulates access to encrypted content on the distribution point, and responsively receives a key. The listener then requests access to a reference point within the encrypted content stream somewhere after its beginning (e.g., using preview clips). The distribution point relates the reference point to a corresponding block of the encrypted stream, and identifies an IV previously used for encryption of that block. The distribution point provides the associated encrypted block of content and the IV to the listener to enable mid-stream rendering of the encrypted content, without requiring the listener to decrypt previous blocks within the encrypted stream.
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Citations
21 Claims
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1. A distribution point configured to use a broadcaster component of a streaming protocol that enables a broadcaster to establish a stream on the distribution point, the distribution point comprising:
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a protocol interface structured and arranged to establish distribution of the stream on the distribution point using a single establishment message, the single establishment message comprising;
an expectation parameter indicating how the distribution point should respond if the streaming message is accepted, a user agent parameter enabling software on the broadcaster to self identify, a protocol identifier, a broadcaster identifier, and a content type identifier; and
a stream distribution engine structured and arranged to enable one or more listeners to access the stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A distribution point configured to use a listener component of a streaming protocol that enables a listener to access a stream being distributed on the distribution point, the distribution point comprising:
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a protocol interface structured and arranged to establish distribution of the stream on the distribution point in response to a listener request, the listener request comprising;
a path identifier, a host identifier, a user agent identifier, a protocol identifier, an accept code, and a time code; and
a stream distribution engine structured and arranged to enable one or more listeners to access the stream. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification