Patent ID: 8291507

Claim:
A document management system comprising: a shortcut generation unit configured to generate a shortcut of a document; an identifier generation unit configured to generate an identifier for identifying the shortcut generated by the shortcut generation unit; a storing unit configured to store the identifier generated by the identifier generation unit and use restriction information concerning use restriction of the document in a storage medium in association with each other; a setting unit configured to set, in the shortcut generated by the shortcut generation unit, the identifier generated by the identifier generation unit and a destination mail address concerning a destination of the shortcut; a transmitting unit configured to transmit a mail attached with the shortcut, in which the identifier and the destination mail address are set by the setting unit, to the destination; a receiving unit configured to receive the mail attached with the shortcut in which the identifier and the destination mail address are set; an activating unit configured to activate the shortcut attached to the mail received by the receiving unit; an acquiring unit configured to acquire the use restriction information stored by the storing unit in association with the identifier set in the shortcut activated by the activating unit; an individual-mail-address acquiring unit configured to acquire an individual mail address set in a mailer; a determining unit configured to determine whether the individual mail address acquired by the individual-mail-address acquiring unit coincides with the destination mail address set in the shortcut activated by the activating unit, and to determine, based on the use restriction information acquired by the acquiring unit, whether use of the document linked to the shortcut activated by the activating unit is restricted; and a permitting unit configured to permit an access to the document linked to the shortcut activated by the activating unit in a case that the determining unit determines that the individual mail address coincides with the destination mail address set in the shortcut activated by the activating unit and that the use of the document is not restricted.