Digital right management method, apparatus, and system
AssigneesPeking University Founder Group Co., Ltd., Founder Information Industry Holdings Co., Ltd., Peking University, Beijing Founder Apabi Technology Ltd.
InventorsXiaoyu CUI, Zhi TANG
Life of this patent
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Abstract
A digital right management method, including: encrypting, by a first user equipment which has access right to shared digital contents, a key of the digital contents with at least an equipment key of a second user equipment intended to share the digital contents to generate a ciphertext of the key of the digital contents; generating, by the first user equipment, from the ciphertext a new authorization certificate corresponding to the digital contents; and transmitting, by the first user equipment, the new authorization certificate and the digital contents to the second user equipment to instruct the second user equipment to share the digital contents in accordance with the new authorization certificate.
Claims16
A digital right management method, comprising:
- encrypting, by a first user equipment which has access right to shared digital contents, a key of the digital contents with at least an equipment key of a second user equipment intended to share the digital contents to generate a ciphertext of the key of the digital contents;
- generating, by the first user equipment, from the ciphertext a new authorization certificate corresponding to the digital contents;
- and
- transmitting, by the first user equipment, the new authorization certificate and the digital contents to the second user equipment to instruct the second user equipment to share the digital contents in accordance with the new authorization certificate.
A first user equipment, comprising:
- a ciphertext generating module configured to encrypt a key of digital contents with at least an equipment key of a second user equipment intended to share the digital contents to generate a ciphertext of the key of the digital contents;
- an authorization certificate determining module coupled to the ciphertext generating module and configured to generate from the ciphertext a new authorization certificate corresponding to the digital contents;
- and
- an authorization certificate transmitting module coupled to the authorization certificate determining module and configured to transmit the new authorization certificate and the digital contents to the second user equipment to instruct the second user equipment to share the digital contents in accordance with the new authorization certificate.
A digital right management method, comprising:
- encrypting, by a server, a key of digital contents with at least an equipment key of a second user equipment intended to share the digital contents to generate a ciphertext of the key of the digital contents;
- generating, by the server, from the ciphertext a new authorization certificate corresponding to the digital contents;
- and
- transmitting, by the server, the new authorization certificate to the second user equipment through a first user equipment which has access to shared the digital contents, to instruct the second user equipment to share the digital contents in accordance with the new authorization certificate.
A digital right management server, comprising:
- an encrypting module configured to encrypt a key of digital contents with an equipment key of a second user equipment intended to share the digital contents to generate a ciphertext of the key of the digital contents;
- an authorization certificate generating module coupled to the encrypting module and configured to generate from the ciphertext a new authorization certificate corresponding to the digital contents;
- and
- a transmitting module coupled to the authorization certificate generating module and configured to transmit the new authorization certificate to the second user equipment through a first user equipment which has access to shared digital contents to instruct the second user equipment to share the digital contents in accordance with the new authorization certificate.
Dependencies are inferred from the claim text.