Teeware Co., Ltd.

Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Yunjong Jeong

Nohyun Kwak

Byunghoon Kang

Donguk Kim

Minjoon Park

Daehee Jang

Kuenhwan Kwak

Seongman Lee

Disclosed are an extension cryptographic operation processing system and method. An extension cryptographic operation processing method of a processing device including a trusted execution environment can be performed by at least one processor constituting the trusted execution environment of the processing device.

Extension cryptographic operation processing system and method

Provided is a method of protecting an application from reverse engineering. The method includes registering, in an electronic device, a handler capable of being called as a preset fault is generated in the application, after the handler is registered, executing a protection code for generating the preset fault in the application, determining whether an environment where the application is executed is an abnormal environment, based on whether the handler has been called as the protection code is executed, and performing an operation for protecting the application, based on a result of the determination.

Electronic device for protecting application from abnormal environment and operating method thereof

A transaction signature method performed in a system for storing and managing keys, which is implemented as a computer, may include the steps of configuring a cluster based on a node and generating a private key according to a BIP-32 protocol from an internal key of the cluster among a plurality of managed keys in a trusted execution environment (TEE) of the node within the configured cluster and signing transactions.

System and method for storing and managing keys for signing transactions using key of cluster managed in trusted execution environment

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Daejeon, South Korea

Yunjong Jeong