Abstract: A display panel includes a substrate including first, second, and third emission areas, an organic insulating layer on the substrate, first, second, and third pixel electrodes on the organic insulating layer, a pixel-defining layer in which first, second, and third openings, and an out-gassing hole are defined. The first, second, and third openings extend to at least a portion of each of the first, second, and third pixel electrodes. First, second, and third emission layers are respectively on the first, second, and third pixel electrodes. The out-gassing hole includes first, second, and third out-gassing holes defined around the first, second, and third openings. An area of the first out-gassing hole is greater than areas of the second and third out-gassing holes.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Provided is a method of protecting an application from an abnormal environment in an electronic device. The electronic device registers, in the electronic device, a handler capable of being called as a preset fault is generated in the application, after the handler is registered, executes a protection code for generating the preset fault in the application, determines 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 performs an operation for protecting the application, based on a result of the determination.

Abstract: Disclosed is a method of sharing data among multiple processing devices incorporating a trusted execution environment. The method may include receiving a data encryption key (DEK) from a management software communicating with multiple processing devices; encrypting the received DEK using a sealing key accessible within the trusted execution environment; storing the encrypted DEK within the storage of the processing device; decrypting, using the sealing key, the stored DEK in response to a data sharing request; encrypting the data to be protected and shared using the decrypted DEK; and storing the encrypted data in a shared storage apparatus.

Abstract: Disclosed is a key management technology based on a trusted execution environment (TEE). A method of managing a key by a cryptographic operation apparatus incorporating a trusted execution environment may include receiving a required encryption key from a shared storage apparatus in response to a request from an application, wherein the encryption key is encrypted by a key encryption key (KEK) held within a key encryption apparatus, and the encrypted encryption key is stored in a shared storage apparatus with the shared storage apparatus making available the encryption key to multiple cryptographic operation apparatuses; decrypting the encryption key encrypted by the key encryption key (KEK) through the key encryption apparatus; and processing the request from the application using the decrypted encryption key.