A method of managing digital content, which is encrypted with a content key by a first device, the method comprising the steps of: - encrypting said content key by said first device so as to generate an encrypted content key E 1, wherein E 1 means the encrypting of the content key by the first device; - sending said encrypted content key E 1 by said first device to a second device, wherein said second device is not able to access said encrypted digital content because the content key is encrypted by the first device; - sending, to said second device by a third device, a request to use said digital content; - generating, by said second device, a license data describing the rights to use said digital content by said third device in response to said request, wherein said license data includes said encrypted content key E 1; - signing information, by said second device, about an identifier of said digital content, an identifier of said third device and a public key of said third device, - sending said license data by said second device to said third device; - receiving, by said first device, the signed information, - sending, by said first device to said third device, data for decrypting said encrypted content key E 1, said data for decrypting said encrypted content key is encrypted using the public key of said third device; - decrypting said encrypted content key E 1 by said third device using the received data, - wherein the method further comprises o sending the signed information, by the second device to the first device, and/or o sending the signed information, by the second device to the third device; and sending, by said third device to said first device, a message for requesting said first device to send data for decrypting said encrypted content key, the message for requesting comprising the signed information. - encrypting said content key by said first device so as to generate an encrypted content key E 1, wherein E 1 means the encrypting of the content key by the first device; - sending said encrypted content key E 1 by said first device to a second device, wherein said second device is not able to access said encrypted digital content because the content key is encrypted by the first device; - sending, to said second device by a third device, a request to use said digital content; - generating, by said second device, a license data describing the rights to use said digital content by said third device in response to said request, wherein said license data includes said encrypted content key E 1; - signing information, by said second device, about an identifier of said digital content, an identifier of said third device and a public key of said third device, - sending said license data by said second device to said third device; - receiving, by said first device, the signed information, - sending, by said first device to said third device, data for decrypting said encrypted content key E 1, said data for decrypting said encrypted content key is encrypted using the public key of said third device; - decrypting said encrypted content key E 1 by said third device using the received data, - wherein the method further comprises o sending the signed information, by the second device to the first device, and/or o sending the signed information, by the second device to the third device; and sending, by said third device to said first device, a message for requesting said first device to send data for decrypting said encrypted content key, the message for requesting comprising the signed information. o sending the signed information, by the second device to the first device, and/or o sending the signed information, by the second device to the third device; and sending, by said third device to said first device, a message for requesting said first device to send data for decrypting said encrypted content key, the message for requesting comprising the signed information.