Bumhan
Bumhan Kim, Seoul KR
Patent application number | Description | Published |
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20130227264 | INTEGRITY PROTECTION METHOD AND APPARATUS FOR MOBILE TERMINAL - A method and apparatus for protecting the integrity of a mobile terminal are provided. The mobile terminal includes a secure world for preventing unauthorized access to resources, and a normal world other than the secure world. The integrity protection method for the mobile terminal includes sensing a power-on of the mobile terminal, verifying, by a trusted entity in the normal world, the integrity of a first subsequent entity, and sending, when an integrity breach is detected in the first subsequent entity, by the trusted entity, a modification indication signal to the secure world. | 08-29-2013 |
20130227688 | METHOD AND APPARATUS FOR DETECTING TAMPERED APPLICATION - A method and an apparatus for detecting a tampered application are provided. The method of detecting a tampered application includes acquiring a package of an application, extracting and installing a first execution code from the acquired package of the application, extracting a second execution code from the package of the application when an execution command of the application is received after the first execution code is installed, and performing a preset operation when the second execution code differs from the first execution code. | 08-29-2013 |
Bumhan Kim, Gyeonggi-Do KR
Patent application number | Description | Published |
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20150043731 | DATA PROTECTION METHOD AND APPARATUS - A data protection method and apparatus that can protect data through encryption using a Boolean function is provided. The data protection method includes applying an inverse affine transformation to data to be encrypted using a Boolean function; applying round operations of an Advanced Encryption Standard (AES) cryptographic algorithm to the inverse-affine transformed data; and producing ciphertext data by applying an affine transformation to the result of the round operations. | 02-12-2015 |
Bumhan Kim, Yongin-Si KR
Patent application number | Description | Published |
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20150121077 | METHOD AND APPARATUS FOR CONTROLLING LOCK STATE IN ELECTRONIC DEVICE SUPPORTING WIRELESS COMMUNICATION AND SYSTEM THEREFOR - A method and an apparatus for controlling a lock state of an electronic device, and a system therefor are provided. The method includes signing a lock state update request by using a unique key loaded in a confidence region of the electronic device when a lock state change is requested, generating a lock state control request message including the lock state update request, the signed lock state update request, and a certificate of the electronic device, transmitting the generated lock state control request message to a service provider server, and authenticating a lock state update command in a communication processor of the electronic device and updating a state of the communication processor according to the lock state update command when the lock state update command is received from the service provider server. | 04-30-2015 |