Patent ID: 8296237

Claim:
An information distributing system, comprising: a content distribution device, wherein the content distribution device issues a first signed ticket corresponding to a first content and a second un-signed ticket corresponding to a second content, and distributes the first signed ticket, the second un-signed ticket, an encrypted first content generated by encryption of the first content, and an encrypted second content generated by encryption of the second content, the first signed ticket including first decryption key information that is customized to a first user and that is used for decrypting the encrypted first content, and the second unsigned ticket including second decryption key information that is effective for any user including the first user and that is used for decrypting the encrypted second content; and a user terminal, wherein the user terminal includes: a receiving section that receives the first signed ticket, the second un-signed ticket, the encrypted first content, and the encrypted second content from the content distribution device through a network; a judging section that judges whether the encrypted first content is decrypted by using unique user information and the first decryption key information, the unique user information being acquired from a token provided to the user terminal by a user; and a controller that controls: (a) a display device to display first information, which represents the first content, on a screen, when the judging section judge that the encrypted first content is decrypted by using unique user information and the first decryption key information, so that the first user can designate the first information on the screen for outputting the first content, (b) the display device to not display the first information on the screen, when the judging section judges that the encrypted first content is not decrypted by using unique user information and the first decryption key information, and (c) the display device to display second information, which represents the second content, on the screen so that all the users can designate the second information on the screen for outputting the second content.