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公开(公告)号：US11309048B2
公开(公告)日：2022-04-19
申请号：US17027007
申请日：2020-09-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hong-Mook Choi , Hye Soo Lee , Ji-Su Kang , Hyun Il Kim
Abstract: A method of testing using a memory test apparatus connected to a memory device includes receiving a test command. When the test command is a finite state machine (FSM) operation command, the memory device is tested in accordance with the FSM operation command, and an operation is performed to output a result depending on a pass/fail result. But, when the test command is a direct access command, an auto-operation test of input data is performed in a test region according to received address information, and a test result is output, which may include output data with fail information or the auto-operation.
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公开(公告)号：US11874928B2
公开(公告)日：2024-01-16
申请号：US17000748
申请日：2020-08-24
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Ki Seok Bae , Jong Hoon Shin , Ki Tak Kim , Hye Soo Lee , Jin Su Hyun , Hyo Sun Hwang
CPC classification number: G06F21/575 , G06F21/572 , H04L9/0861 , H04L9/0897 , H04L9/3242 , H04L9/3247 , H04L9/3268 , G06F2221/033
Abstract: Provided is a security device, an electronic device, a secure boot management system, a method for generating a boot image and a method for executing a boot chain. The security device includes a key deriver configured to receive a root key and a protected boot key included in a boot image and generate a derived key according to a key protection method using the root key and the protected boot key, a key processor configured to perform verification according to the key protection method using the generated derived key to extract a boot key from the protected boot key included in the boot image, a secure booter configured to perform verification on a protected execution image included in the boot image using the extracted boot key, and a processor configured to execute a verified execution image on which the verification has been completed by the secure booter.
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公开(公告)号：US20210240833A1
公开(公告)日：2021-08-05
申请号：US17000748
申请日：2020-08-24
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Ki Seok BAE , Jong Hoon Shin , Ki Tak Kim , Hye Soo Lee , Jin Su Hyun , Hyo Sun Hwang
Abstract: Provided is a security device, an electronic device, a secure boot management system, a method for generating a boot image and a method for executing a boot chain. The security device includes a key deriver configured to receive a root key and a protected boot key included in a boot image and generate a derived key according to a key protection method using the root key and the protected boot key, a key processor configured to perform verification according to the key protection method using the generated derived key to extract a boot key from the protected boot key included in the boot image, a secure booter configured to perform verification on a protected execution image included in the boot image using the extracted boot key, and a processor configured to execute a verified execution image on which the verification has been completed by the secure booter.
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