To provide an information management device, terminal equipment and an information management system for improving the operability of a user using terminal equipment when data are transmitted from an information management device to a plurality of terminal equipment.

When a distribution file is transmitted to user terminal equipment 2N registered in advance, and the distribution file is double-clicked by a user, a dedicated tool is started, and the user terminal equipment 2N transmits user ID information or log-in password or the like registered in advance to an information management device 1.When the user terminal equipment 2N is authenticated, the information management device 1 transmits a key used when the transmitted file data are encrypted, to the user terminal equipment 2N.

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