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ÇѱÛÁ¦¸ñ(Korean Title) |
¾ÈÀüÇÑ ¹®¼ °Ë»öÀ» À§ÇÑ ÀúÂ÷¿ø º¯È¯ ±â¹ÝÀÇ 2´Ü°è ÇÁ·ÎÅäÄÝ |
¿µ¹®Á¦¸ñ(English Title) |
Lower Dimensional Transformation-based 2-Step Protocol for Secure Similar Document Detection |
ÀúÀÚ(Author) |
±è»óÇÊ
±æ¸í¼±
ÃÖÇüÁø
±èÀåȯ
¹®¾ç¼¼
Sang-Pil Kim
Myeong-Seon Gil
Hyung-Jin Choi
Jang-Hwan Kim
Yang-Sae Moon
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¿ø¹®¼ö·Ïó(Citation) |
VOL 32 NO. 02 PP. 0051 ~ 0060 (2016. 08) |
Çѱ۳»¿ë (Korean Abstract) |
¾ÈÀüÇÑ À¯»ç ¹®¼ °Ë»ö(secure similar document detection: SSDD)Àº µÎ ÆÄƼ°¡ ¼·ÎÀÇ ¹Î°¨ÇÑ ¹®¼´Â °ø°³ÇÏÁö ¾ÊÀ¸¸é¼µµ À¯»ç ¹®¼¸¦ ÆǺ°ÇÏ´Â ±â¹ýÀÌ´Ù. º» ³í¹®¿¡¼´Â ÀúÂ÷¿ø º¯È¯À» »ç¿ëÇÏ¿© SSDD¸¦ È¿À²ÀûÀ¸·Î ¼öÇàÇÏ´Â 2-´Ü°è ÇÁ·ÎÅäÄÝÀ» Á¦½ÃÇÑ´Ù. ¿ì¼±, ±âÁ¸ 1-´Ü°è ÇÁ·ÎÅäÄÝÀÌ °íÂ÷¿ø ¹®¼ º¤ÅÍ¿¡ ´ëÇØ ½É°¢ÇÑ ÄÄÇ»Æà ¹× Åë½Å ¿À¹öÇìµå¸¦ ¹ß»ý½ÃÅ´À» ºÐ¼®ÇÑ´Ù. ´ÙÀ½À¸·Î, °¡Àå °£´ÜÇÑ ÀúÂ÷¿ø º¯È¯ÀÎ RP(random projection)¸¦ »ç¿ëÇÑ 2-´Ü°è ÇÁ·ÎÅäÄÝÀ» Á¦½ÃÇÏ°í, ±× Á¤È®¼ºÀ» Áõ¸íÇÑ´Ù. ¸¶Áö¸·À¸·Î, RPÀÇ ³·Àº ÇÊÅ͸µ È¿°ú¸¦ °³¼±Çϱâ À§ÇØ DF(document frequency)¸¦ ÀúÂ÷¿ø º¯È¯À¸·Î »ç¿ëÇÑ 2-´Ü°è ÇÁ·ÎÅäÄÝÀ» Á¦½ÃÇÑ´Ù. ½ÇÇè °á°ú, Á¦¾ÈÇÑ DF ±â¹ÝÀÇ 2-´Ü°è ÇÁ·ÎÅäÄÝÀº ±âÁ¸ 1-´Ü°è ÇÁ·ÎÅäÄÝ¿¡ ºñÇØ ¼º´ÉÀ» ÃÖ´ë 147¹è±îÁö Çâ»ó½ÃŲ °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
SSDD(secure similar document detection) identifies similar documents of two parties while not disclosing their sensitive documents. In this paper we propose an efficient two-step approach for SSDD by using the lower-dimensional transformation. We first analyze that the existing 1-step protocol causes serious computing and communications overhead. To solve this problem, we next propose a 2-step protocol based on RP(random projection), the simplest lower-dimensional transformation and prove its correctness. We also propose another 2-step protocol by using DF(document frequency) to improve the filtering effect of RP. Finally, we empirically show that the DF-based 2-step protocol significantly outperforms the base protocol by up to 147 times. |
Å°¿öµå(Keyword) |
¾ÈÀüÇÑ À¯»ç ¹®¼ °Ë»ö
ÄÚ»çÀÎ À¯»çµµ
ÀúÂ÷¿ø º¯È¯
¹®¼ ºóµµ
Secure Similar Document Detection
Cosine Similarity Measure
Lower-dimensional Transformation
Document Frequency
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ÆÄÀÏ÷ºÎ |
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