- 专利标题: SECURE DRM-AGNOSTIC KEY ROTATION
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申请号: US15361904申请日: 2016-11-28
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公开(公告)号: US20180150620A1公开(公告)日: 2018-05-31
- 发明人: Debra Hensgen , Charles Stevens
- 申请人: OpenTV, Inc.
- 主分类号: G06F21/10
- IPC分类号: G06F21/10 ; G06F21/60 ; G06F21/62 ; H04L9/08 ; H04L29/06
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
- US10437968B2 Secure DRM-agnostic key rotation 公开/授权日:2019-10-08
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