Abstract: A security chip and an application processor may be included in a device configured to engage in encrypted communications with an external client, including public key infrastructure communications, in an environment where a certificate authority is absent. The security chip may provide the application processor with a device public key from among a pair of device keys related to public key infrastructure communications, receive a request from the application processor to generate a digital signature on a certificate form including the device public key, provide the application processor with a digital signature generated based on an encryption operation using a certificate authority private key, and receive and store a certificate including the digital signature from the application processor.

Abstract: Provided are a user authentication method and an electronic device performing the method. The method is performed under the control of a processor and includes inputting a user authentication request for identifying a user, generating random number data that corresponds to knowledge-based authentication information in the user authentication request, generating an authentication code by combining biometrics-based authentication information in the user authentication request and the random number data, and processing the user authentication request based on the authentication code.

Abstract: A secure element including: a storage configured to store security data; a first interface configured to receive a user input from an external input device; a processor configured to perform a user authentication, based on the user input, and activate the storage when the user authentication succeeds; and a second interface configured to transmit security information based on the security data to an external processor.

Abstract: A security chip and an application processor may be included in a device configured to engage in encrypted communications with an external client, including public key infrastructure communications, in an environment where a certificate authority is absent. The security chip may provide the application processor with a device public key from among a pair of device keys related to public key infrastructure communications, receive a request from the application processor to generate a digital signature on a certificate form including the device public key, provide the application processor with a digital signature generated based on an encryption operation using a certificate authority private key, and receive and store a certificate including the digital signature from the application processor.

Abstract: Provided are a user authentication method and an electronic device performing the method. The method is performed under the control of a processor and includes inputting a user authentication request for identifying a user, generating random number data that corresponds to knowledge-based authentication information in the user authentication request, generating an authentication code by combining biometrics-based authentication information in the user authentication request and the random number data, and processing the user authentication request based on the authentication code.

Abstract: A computer program, system and method for micro controller unit (MCU) application program verification may provide source code program level debugging using different versions of debugging information files. The MCU application program verification may simultaneously debug information created by different versions of development tools, assign a highest priority to a debugging information file corresponding to a most recently updated source code program, and construct a corresponding debugging information data structure. Previously debugged source code programs and recently updated source code programs may be simultaneously debugged without changing images corresponding to the already debugged source code programs.