Abstract: An authentication system includes: a certificate authority; a central control system; a group including an unmanned vehicle that is a master vehicle and an unmanned vehicle that is a slave vehicle; a management system; and an external system. The central control system includes a first authentication information transmitting unit that transmits, to the master vehicle, first authentication information received from the certificate authority. The master vehicle includes an authentication unit that executes authentication with the slave vehicle belonging to the same group, and a second authentication information transmitting unit that transmits second authentication information including a first token with an expiration date and the first authentication information to the authenticated slave vehicle.

Abstract: A key exchange system according to one aspect of the present disclosure is a key exchange system that realizes a key exchange with authentication between a first instrument that performs authentication based on an ID-based encryption and a second instrument that performs authentication based on an electronic certificate, wherein the first instrument includes a first verification unit configured to verify the electronic certificate, a second verification unit configured to verify a signature generated by the second instrument by using a verification key associated with the electronic certificate when the verification of the electronic certificate is successful, and a first session key generation unit configured to generate a session key to be used for encrypted communication with the second instrument by using the electronic certificate and shared information generated by a pairing operation when the verification of the signature is successful, and the second instrument includes a signature generation unit con

Abstract: A decorative sheet includes a primary film layer and a surface protection layer provided on one surface of the primary film layer. The surface protection layer has, in its surface, a ridged portion protruding in a ridged pattern to form an irregular shape. The irregular shape of the surface protection layer has RSm/Ra within the range of 10 or greater and 300 or smaller. The surface protection layer includes an ionizing radiation-curable resin as a main material. The ionizing radiation-curable resin is a trifunctional acrylic resin with the main component having a repeating structure. The repeating structure is any of an ethylene oxide structure, a propylene oxide structure, and an ?-caprolactone structure. The single-bonded carbon ratio in the main component of the ionizing radiation-curable resin falls within the range of 0.725 or greater and 0.955 or smaller.

Abstract: There is provided a chatbot system including a plurality of user terminals, a chatbot, and a chat server. The chatbot includes a memory and a processor configured to create a message from data which is acquired from an external service, receive, as an input, a list including a user ID of a user terminal which has utilization authority for the data, generate a policy-equipped ciphertext by an encryption algorithm of ciphertext policy attribute-based encryption, and transmit the policy-equipped ciphertext to the chat server, and each of the user terminals includes a memory and a processor configured to receive a policy-equipped ciphertext from the chat server and decrypt the policy-equipped ciphertext using an attribute-equipped secret key which is generated on the basis of a user ID of the user terminal.

Abstract: An authentication and authorization system according to one embodiment includes: a plurality of devices that perform mutual authentication and authorization by an authentication protocol using ID-based encryption; and an authentication and authorization infrastructure that generates an ID and a private key used for the mutual authentication and authorization, in which the authentication and authorization infrastructure includes: an ID generation unit configured to generate an ID including at least an identifier of the device and information regarding the device; a generation unit configured to generate a private key of the device from the ID; and a distribution unit configured to distribute the ID and the private key to a device corresponding to the identifier included in the ID, and the device includes: a mutual authentication unit configured to perform mutual authentication with another device by using the ID and the private key of the own device; a verification unit configured to verify whether or not a pr

Abstract: A method for introducing a genome editing enzyme into a plant cell includes: treating the cell with plasma; and then bringing the cell into contact with the genome editing enzyme in the presence of a di- or higher-valent metal cation.

Abstract: There is provided a chatbot system including a plurality of user terminals, a chatbot, and a chat server. The chatbot includes a memory and a processor configured to create a message from data which is acquired from an external service, receive, as an input, a list including a user ID of a user terminal which has utilization authority for the data, generate a policy-equipped ciphertext by an encryption algorithm of ciphertext policy attribute-based encryption, and transmit the policy-equipped ciphertext to the chat server, and each of the user terminals includes a memory and a processor configured to receive a policy-equipped ciphertext from the chat server and decrypt the policy-equipped ciphertext using an attribute-equipped secret key which is generated on the basis of a user ID of the user terminal.