Abstract: A compound represented by the general formula (1) or a salt thereof, which has a superior IRAK-4 inhibitory activity, and is useful as active ingredients of medicaments for prophylactic treatment and/or therapeutic treatment of diseases relating to IRAK-4 inhibition.

Abstract: An in-vehicle device includes: a reception unit configured to receive, via control area network communication (CAN communication), a message including data and an authentication code for authenticating the data; an authentication unit configured to authenticate the data by using the authentication code; and a control unit configured to perform control by using the data included in the message when the authentication unit has authenticated data included in a preset number of messages consecutively received by the reception unit. A method includes: receiving, via control area network communication (CAN communication), a message including data and an authentication code for authenticating the data; authenticating the data by using the authentication code; and when data included in two consecutively received messages is authenticated in the authenticating the data, performing control by using data included in a last received message among the two messages.

Abstract: A system includes a plurality of in-vehicle devices and having a function of determining abnormality of communication in the devices by authenticating a message including data, a first counter counted each time a power source is turned on, and a second counter incremented over time. The system includes an authentication unit for performing, when a message including control data to be exchanged between the devices is authenticated, authentication on a message sent and received between the devices and including at least the control data and the first counter by using at least the control data and the first counter, in which when it is confirmed whether synchronization is achieved between the devices, the authentication unit is for performing authentication on a message sent and received between the devices and not including the first counter but including the second counter by using the second counter without using the first counter.

Abstract: A first authentication process unit and a second authentication process unit of an ECU constituting a system respectively perform a first authentication process and a second authentication process for comparing authentication information acquired from a maintenance operator terminal and a user terminal, and first authentication information of a first authentication information registration unit and second authentication information of a second authentication information registration unit. An authority setting unit performs an operation permission for a vehicle for the purpose of maintaining the vehicle when the authentications match.

Abstract: A first authentication process unit and a second authentication process unit of an ECU constituting a system respectively perform a first authentication process and a second authentication process for comparing authentication information acquired from a maintenance operator terminal and a user terminal, and first authentication information of a first authentication information registration unit and second authentication information of a second authentication information registration unit. An authority setting unit performs an operation permission for a vehicle for the purpose of maintaining the vehicle when the authentications match.

Abstract: A communication apparatus that transmits a challenge code on the basis of a received request signal and performs authentication of an authentication target apparatus transmitting the request signal on the basis of the challenge code and a response code generated on the basis of the challenge code includes a control unit configured to perform a predetermined fail-safe process when a request signal is received a set number of times or more from the authentication target apparatus before completion of the authentication after the transmission of the challenge code.

Abstract: An authentication target apparatus is an authentication target apparatus that obtains authentication from an authentication apparatus on the basis of a response code generated on the basis of a received challenge code and includes a control unit configured to perform a limiting process limiting the authentication performed with the authentication apparatus when a number of times the authentication is performed with the authentication apparatus exceeds a predetermined number of times within a predetermined period beginning with a period after transmission of a response code.

Abstract: A communication apparatus that transmits a challenge code on the basis of a received request signal and performs authentication of an authentication target apparatus transmitting the request signal on the basis of the challenge code and a response code generated on the basis of the challenge code includes a control unit configured to perform a predetermined fail-safe process when a request signal is received a set number of times or more from the authentication target apparatus before completion of the authentication after the transmission of the challenge code.