To enable a person other than a content right holder to perform edition processing on a content without disclosing a key held by the content right holder while maintaining security of the content.
A bridge media encryption key management system comprises an information processor 100. The information processor 100 is configured to: receive a key conversion request including authentication information of a non-content right holder and an encrypted key which is attached to a content and is provided for the non-content right holder by the content right holder, from a terminal 160 of the non-content right holder; perform authentication processing by collating the authentication information of the non-content right holder included in the key conversion request with authentication information stored in a storage unit; when the authentication processing is successful, decrypt the encrypted key by a key of the content right holder stored in the storage unit; and encrypt the decrypted key by a key of the non-content right holder to transmit the new encrypted key to the terminal 160 of the non-content right holder.
IMAI TSUTOMU
KAWAZURE YOSHIAKI
Next Patent: AUTOMATIC DOCUMENT CARRIER DEVICE, IMAGE READER AND IMAGE FORMING APPARATUS