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Title:
SECURITY DEVICE AND METHOD FOR PROVIDING SECURITY SERVICE THROUGH CONTROL OF FILE INPUT/OUTPUT AND INTEGRITY OF GUEST OPERATING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/225849
Kind Code:
A1
Abstract:
The present invention comprises: when an executable file of a guest operating system or a request for executing an executable file executed in the guest operating system is detected, securing security of the executable file by calculating a hash value before execution of the executable file and comparing the calculated hash value with a previously stored hash value; parsing a file system of the guest operating system before starting the guest operating system, and verifying integrity of a virtualization driver; when the virtualization driver has integrity according to a verification result, blocking modulation of a memory area to which the virtualization driver is allocated, a memory area corresponding to a master boot record (MBR) of the guest operating system, and a memory area corresponding to a volume boot record (VBR) of the guest operating system; and when the virtualization driver accesses a file, determining authority to access the file, the access to which has been requested, and processing the access so as to protect the file.

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Inventors:
JEONG HOI CHAN (KR)
MOON JI HOON (KR)
PARK JUN YEONG (KR)
Application Number:
PCT/KR2019/003273
Publication Date:
November 28, 2019
Filing Date:
March 21, 2019
Export Citation:
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Assignee:
SOOSAN INT CO LTD (KR)
International Classes:
G06F21/50; G06F9/455; G06F21/60; G06F21/62
Domestic Patent References:
WO2017105706A12017-06-22
Foreign References:
KR101673774B12016-11-08
US20160294559A12016-10-06
US8984639B12015-03-17
Other References:
SOOSAN INT, ERED HYPERVISOR SECURITY - THE HIDDEN CARD (ENGLISH VER., 22 March 2018 (2018-03-22), Retrieved from the Internet
SOOSAN INT, ERED HYPERVISOR SECURITY - PREVIEW (ENGLISH VER., 12 April 2018 (2018-04-12), Retrieved from the Internet
Attorney, Agent or Firm:
MUHANN PATENT & LAW FIRM (KR)
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