- 专利标题: Secure DRM-agnostic key rotation
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申请号: US17302523申请日: 2021-05-05
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公开(公告)号: US11550882B2公开(公告)日: 2023-01-10
- 发明人: Debra Hensgen , Charles Stevens
- 申请人: OpenTV, Inc.
- 申请人地址: US CA San Francisco
- 专利权人: OpenTV, Inc.
- 当前专利权人: OpenTV, Inc.
- 当前专利权人地址: US CA San Francisco
- 代理机构: Schwegman Lundberg & Woessner, P.A.
- 主分类号: H04L9/08
- IPC分类号: H04L9/08 ; G06F21/10 ; H04N21/262 ; H04N21/266 ; H04N21/8355 ; G06F21/60 ; G06F21/62 ; H04L9/40
摘要:
Systems and methods for managing provisioning of keys prior to a key rotation are provided. A license server generates a license that is associated with a renewal time. The renewal time is a time that is prior to a key rotation time, and triggers a receiver device to send a renewal request prior to the key rotation time. The renewal time may be a randomized time prior to the key rotation time that differs for different receiver devices. The license is transmitted to the receiver device. The license server then receives a renewal request from the receiver device that is triggered at the renewal time. The license server generates a next license that comprises a next key, whereby the next key is a decryption key for decrypting the encrypted signal after the key rotation time. The next license is transmitted to the receiver device prior to the key rotation time.
公开/授权文献
- US20210256098A1 SECURE DRM-AGNOSTIC KEY ROTATION 公开/授权日:2021-08-19
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