公开(公告)号：US20230306090A1

公开(公告)日：2023-09-28

申请号：US17701828

申请日：2022-03-23

申请人： Synamedia Limited

发明人： Moshe Elad ,  David Livshits ,  Itai Ephraim Zilbershtein

IPC分类号： G06F21/12 ,  G06F21/10 ,  G06F21/31 ,  H04L9/08

CPC分类号： G06F21/121 ,  G06F21/105 ,  G06F21/31 ,  H04L9/0825 ,  H04L9/0866

摘要： Techniques for preventing rendering content from content delivery network (CDN) to unauthorized users are described herein. In accordance with various embodiments, a CDN includes one or more processors and a non-transitory memory. The CDN receives a request from a client device for a media content item, where the request indicates an identifier of a client. The CDN further provisions an encrypted media content item corresponding to the media content item for the client, where at least a portion of the encrypted media content item is encrypted using at least one personalized key assigned to the client. The CDN also facilitates obtaining a manifest corresponding to the encrypted media content item, where the manifest specifies encryption metadata for retrieving the at least one personalized key by the client. The CDN additionally sends the encrypted media content item and the manifest to the client device.

公开(公告)号：US20220417028A1

公开(公告)日：2022-12-29

申请号：US17585529

申请日：2022-01-26

申请人： Synamedia Limited

发明人： Itai Ephraim Zilbershtein ,  Moshe Elad ,  Ezra Darshan ,  David Livshits ,  Michael Joseph Burns ,  Assaf Yosef Tamir

IPC分类号： H04L9/32 ,  H04L9/40

摘要： Techniques for server control of client authorization proof of possession are described herein. In various embodiments, a first server provisions client authorization proof of possession for a client device a real-world time, a client public key, and a client private key. The first server generates provisioning response message(s) including the client public key, the client private key, the real-world time, and/or an assertion object, and sends the message(s) to the client device. In various embodiments, a client device obtains an authorization proof token generated based on a client public key, a client private key, and a real-world time provisioned by a first server. The client device generates a request and sends the request to a second server, the request includes the authorization proof token and an assertion object from the first server signed by a server private key and an expiration time and a reference to the client public key.

公开(公告)号：US12010394B2

公开(公告)日：2024-06-11

申请号：US17523587

申请日：2021-11-10

申请人： Synamedia Limited

发明人： Dan Ariel Elbert ,  Vadim Kharitonsky ,  Anatoly Seldin ,  Zorach Reuven Wachtfogel ,  Ian John Bastable ,  Gareth John Bowen ,  Peter Gibbs ,  Moshe Elad ,  Max Sorkin

IPC分类号： H04N21/633 ,  H04N21/235 ,  H04N21/266 ,  H04N21/6334

CPC分类号： H04N21/63345 ,  H04N21/2351 ,  H04N21/266

摘要： Techniques for a trusted system for secure content distribution and trusted recording of content consumption are described. In some embodiments, the trusted system transcodes and transcrypts a media content item using a key obtained from a content provider and one or more keys based on an entitlement from a service provider to generate an encrypted media content item. The trusted system further receives a request to provide the media content item to a client device. The trusted system also obtains a signed audit token recording the request upon an authorization by the service provider based on the entitlement and a confirmation by the content provider, where the signed audit token is signed by the content provider and the service provider. The trusted system additionally provides the one or more keys for decrypting the encrypted media content item and reports the signed audit token.

公开(公告)号：US11954185B2

公开(公告)日：2024-04-09

申请号：US17701828

申请日：2022-03-23

申请人： Synamedia Limited

发明人： Moshe Elad ,  David Livshits ,  Itai Ephraim Zilbershtein

IPC分类号： G06F21/12 ,  G06F21/10 ,  G06F21/31 ,  H04L9/08

CPC分类号： G06F21/121 ,  G06F21/105 ,  G06F21/31 ,  H04L9/0825 ,  H04L9/0866

摘要： Techniques for preventing rendering content from content delivery network (CDN) to unauthorized users are described herein. In accordance with various embodiments, a CDN includes one or more processors and a non-transitory memory. The CDN receives a request from a client device for a media content item, where the request indicates an identifier of a client. The CDN further provisions an encrypted media content item corresponding to the media content item for the client, where at least a portion of the encrypted media content item is encrypted using at least one personalized key assigned to the client. The CDN also facilitates obtaining a manifest corresponding to the encrypted media content item, where the manifest specifies encryption metadata for retrieving the at least one personalized key by the client. The CDN additionally sends the encrypted media content item and the manifest to the client device.

公开(公告)号：US20230142278A1

公开(公告)日：2023-05-11

申请号：US17523587

申请日：2021-11-10

申请人： Synamedia Limited

发明人： Dan Ariel Elbert ,  Vadim Kharitonsky ,  Anatoly Seldin ,  Zorach Reuven Wachtfogel ,  Ian John Bastable ,  Gareth John Bowen ,  Peter Gibbs ,  Moshe Elad ,  Max Sorkin

IPC分类号： H04N21/6334 ,  H04N21/266 ,  H04N21/235

CPC分类号： H04N21/63345 ,  H04N21/266 ,  H04N21/2351

摘要： Techniques for a trusted system for secure content distribution and trusted recording of content consumption are described. In some embodiments, the trusted system transcodes and transcrypts a media content item using a key obtained from a content provider and one or more keys based on an entitlement from a service provider to generate an encrypted media content item. The trusted system further receives a request to provide the media content item to a client device. The trusted system also obtains a signed audit token recording the request upon an authorization by the service provider based on the entitlement and a confirmation by the content provider, where the signed audit token is signed by the content provider and the service provider. The trusted system additionally provides the one or more keys for decrypting the encrypted media content item and reports the signed audit token.

公开(公告)号：US20220417241A1

公开(公告)日：2022-12-29

申请号：US17585522

申请日：2022-01-26

申请人： Synamedia Limited

发明人： Itai Ephraim Zilbershtein ,  Moshe Elad ,  Ezra Darshan ,  David Livshits ,  Michael Joseph Burns ,  Assaf Yosef Tamir

IPC分类号： H04L9/40 ,  H04L9/08 ,  H04L9/12

摘要： Techniques for server control of client authorization proof of possession are described herein. In various embodiments, a first server provisions client authorization proof of possession for a client device a real-world time, a client public key, and a client private key. The first server generates provisioning response message(s) including the client public key, the client private key, the real-world time, and/or an assertion object, and sends the message(s) to the client device. In various embodiments, a client device obtains an authorization proof token generated based on a client public key, a client private key, and a real-world time provisioned by a first server. The client device generates a request and sends the request to a second server, the request includes the authorization proof token and an assertion object from the first server signed by a server private key and an expiration time and a reference to the client public key.