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ÇѱÛÁ¦¸ñ(Korean Title) |
°ø°£ µ¥ÀÌÅͺ£À̽º ¾Æ¿ô¼Ò½ÌÀ» À§ÇÑ ºñÆ®¸Ê ¾ÏÈ£È ±â¹ý ¹× GPU ±â¹Ý ÁúÀÇó¸® ¾Ë°í¸®Áò |
¿µ¹®Á¦¸ñ(English Title) |
A Bitmap Encryption Scheme and a GPU-based Query Processing Algorithm for Spatial Database Outsourcing |
ÀúÀÚ(Author) |
À±¹Î
Á¶¾Æ¶ó
ÀåÀç¿ì
Min Yoon
Ahra Cho
Jae-woo Chang
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¿ø¹®¼ö·Ïó(Citation) |
VOL 41 NO. 02 PP. 0071 ~ 0082 (2014. 04) |
Çѱ۳»¿ë (Korean Abstract) |
Ãֱ٠Ŭ¶ó¿ìµå ÄÄÇ»ÆÃÀÌ ºü¸£°Ô ¹ßÀüÇÔ¿¡ µû¶ó, °ø°£ µ¥ÀÌÅͺ£À̽º ¾Æ¿ô¼Ò½Ì¿¡ ´ëÇÑ °ü½ÉÀÌ ±ÞÁõÇÏ°í ÀÖ´Ù. µû¶ó¼ °ø°£ µ¥ÀÌÅͺ£À̽º ¾Æ¿ô¼Ò½Ì¿¡¼ À§Ä¡ µ¥ÀÌÅÍ º¸È£¸¦ À§ÇÑ ¾ÏÈ£È ±â¹ýÀÌ ¿¬±¸µÇ°í ÀÖ´Ù. ±×·¯³ª ±âÁ¸ °ø°£ ÁÂÇ¥ º¯È¯ ±â¹ýÀÎ FDH´Â À§Ä¡ µ¥ÀÌÅÍÀÇ ºÐÆ÷¸¦ °í·ÁÇÏÁö ¾Ê°í ¾Ïȣȸ¦ ¼öÇàÇϱ⠶§¹®¿¡, °ø°ÝÀÚ°¡ ¾ÏÈ£È º¯È¯ µ¥ÀÌÅͷκÎÅÍ ¿øº» µ¥ÀÌÅÍ ºÐÆ÷¸¦ À¯ÃßÇÏ´Â °ÍÀÌ °¡´ÉÇÏ´Ù. ¾Æ¿ï·¯, Æ®¸®±â¹Ý À妽º¸¦ ÅëÇØ ÁúÀÇ Ã³¸®¸¦ ¼öÇàÇϱ⠶§¹®¿¡, µ¥ÀÌÅÍÀÇ ¾çÀÌ ¸¹¾ÆÁú¼ö·Ï ÁúÀÇ Ã³¸® ¼º´ÉÀÌ ÀúÇϵǴ ¹®Á¦Á¡ÀÌ Á¸ÀçÇÑ´Ù. À̸¦ À§ÇØ, º» ³í¹®¿¡¼´Â °ø°£ µ¥ÀÌÅͺ£À̽º ¾Æ¿ô¼Ò½Ì¿¡¼ À§Ä¡ µ¥ÀÌÅÍ º¸È£¸¦ À§ÇÑ ºñÆ®¸Ê ±â¹Ý µ¥ÀÌÅÍ ¾ÏÈ£È ±â¹ý ¹× ÁúÀÇó¸® ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ±â¹ý¿¡¼´Â °ø°ÝÀÚÀÇ ¿øº» µ¥ÀÌÅÍ À¯Ãß ¹æÁö¸¦ À§ÇØ µ¥ÀÌÅÍ ºÐÆ÷¸¦ °í·ÁÇÑ ¿µ¿ª ºÐÇÒ/º´ÇÕ Á¤Ã¥À» ÀÌ¿ëÇÑ ¾ÞÄ¿ ¼±Á¤ ¾Ë°í¸®ÁòÀ» »ç¿ëÇÑ´Ù. ¾Æ¿ï·¯, ÃÖÀûÀÇ ÁúÀÇ Ã³¸® ¼º´ÉÀ» º¸ÀåÇϱâ À§ÇØ, GPU¸¦ ÅëÇÑ ÁúÀÇ Ã³¸®¸¦ ¼öÇàÇÑ´Ù. ÇÑÆí, ¼º´É Æò°¡¸¦ ÅëÇØ Á¦¾ÈÇÏ´Â ±â¹ýÀÌ °ø°ÝÀÚ·ÎÀÇ ¿øº» µ¥ÀÌÅͺ£À̽º ³ëÃâ È®·üÀ» °¨¼Ò½ÃÅ°¸é¼, ºü¸¥ ÁúÀÇ Ã³¸®¸¦ ¼öÇàÇÔÀ» °ËÁõÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
With the development of cloud computing, the interest on spatial database outsourcing has been increasing. Therefore, researches for protecting location data privacy in spatial outsourced databases have been actively performed. However, FDH (Flexible Distance-Based Hashing) is easy to access original data because they do not consider data distribution. In addition, since they perform the nearest neighbor query processing by using tree-based indexs, query processing time can be increased depending on tree depth. To solve these problems, we propose a bitmap encryption scheme and a query processing algorithm for spatial database outsourcing. We propose an anchor selection algorithm using a split-and-merge policy based on data distribution to protect privacy of users from attackers. Furthermore, we reduce the communication cost for query processing by performing searching based on GPU. Finally, we show through performance analysis that the proposed scheme shows better query processing performance and guarantees the privacy of users, compared with the existing scheme.
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Å°¿öµå(Keyword) |
°ø°£ µ¥ÀÌÅͺ£À̽º ¾Æ¿ô¼Ò½Ì
À§Ä¡ µ¥ÀÌÅÍ º¸È£
±×¸®µå À妽º ±â¹ý
ºñÆ®¸Ê ¾ÏÈ£È ±â¹ý
GPU ±â¹Ý ÁúÀÇó¸® ¾Ë°í¸®Áò
spatial database outsourcing
location data protection
grid index scheme
bitmap encryption scheme
GPU-based query processing algorithm
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