Samsung Electronics Co., Ltd.

Min-ja Han

Ki-Hong Kim

Min-Soo Kang

Kyung-jin Lee

Youn-sung Chu

Je-Sang Lee

Yong-Pyo Kim

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.

Security chip and application processor

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.

User authentication method and electronic device performing user authentication

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Seoul, South Korea

Min-ja Han