A digital rights management method, device and system

Example embodiments relates to communications technologies, and in particular relates to a digital rights management method, apparatus and system for solving the protected digital content using the process of the prior art can not be present in the co-addition of new equipment to enjoy the protection of the present invention the problem of digital content. A digital rights management method according to an embodiment of the present invention, comprising: a digital content shared public key for all users of the second device according to the first user equipment need to share the digital content, generates a common public key; according to the common public key the key to encrypt the digital content, generates a ciphertext of the key of the digital content; the ciphertext generating the corresponding digital content in accordance with the new authorization certificate; and transmitting the new authorization certificate and the digital content to a second user equipment, instruct the second user device to share the digital content under the new authorization certificate. Embodiments enable users to add new devices to share digital content of the digital contents during use in the present invention.