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�룊臾몄쓣 �븫�샇�솕�븯湲� �쐞�븳 �뿰�궛�옄�쓽 �쑀�삎
移섑솚(營��룢, Substitution) : �룊臾몄쓽 媛� �썝�냼瑜� �떎瑜� �썝�냼濡� �궗�긽
�쟾移�(饔됬쉰, Transposition) : �룊臾몄쓽 媛� �썝�냼瑜� �옱諛곗뿴
�궗�슜�맂 �궎�쓽 �닔
愿��슜�궎 : single-key, symmetric, secret-key
�넚�닔�떊�옄媛� 媛숈�� �궎瑜� �궗�슜
怨듦컻�궎 : two-key, asymmetric, public-key
�넚�닔�떊�옄媛� �떎瑜� �궎瑜� �궗�슜
�룊臾� 泥섎━ 諛⑸쾿
釉붾줉 �븫�샇�솕 (Block cipher) : �뿰�궛�쓣 釉붾줉 �떒�쐞濡� 泥섎━
�뒪�듃由� �븫�샇�솕 (Stream cipher) : �엯�젰�쓣 �뿰�냽�쟻�쑝濡� 泥섎━
Cryptanalysis
�룊臾몄씠�굹 �궎 �삉�뒗 �씠 �몢 媛�吏�瑜� 紐⑤몢 諛쒓껄�븯�젮�뒗 �떆�룄 怨쇱젙
�븞�쟾�꽦
臾댁“嫄� �븞�쟾: 鍮꾩슜怨� �떆媛꾩씠 異⑸텇�븯�뿬�룄 蹂듯샇媛� 遺덇���뒫
怨꾩궛�긽�쑝濡� �븞�쟾: �빐�룆 鍮꾩슜�씠 蹂듯샇�맂 �젙蹂댁쓽 媛�移섎�� 珥덇낵�븯嫄곕굹 �빐�룆�떆媛꾩씠 �젙蹂댁쓽 �쑀�슚�븳 �닔紐낆＜湲곕�� 珥덇낵
�븫�샇 硫붿떆吏��뿉 ����븳 怨듦꺽�쓽 �쑀�삎
�븫�샇臾� �떒�룆 怨듦꺽 (Ciphertext only)
湲곗�� �룊臾� 怨듦꺽 (Known plaintext)
�꽑�깮 �룊臾� 怨듦꺽 (Chosen plaintext)
�꽑�깮 �븫�샇臾� 怨듦꺽 (Chosen ciphertext)
�꽑�깮 �썝臾� 怨듦꺽 (Chosen text)
�룊臾� 硫붿떆吏��쓽 ����땳 諛⑸쾿
Steganograhpy 諛⑸쾿
硫붿떆吏��쓽 議댁옱 �옄泥대�� ����룓
cryptography 諛⑸쾿
�떎�뼇�븳 �썝臾몄쓽 蹂��솚�뿉 �쓽�빐 �쇅遺��씤�씠 洹� �쓽誘몃�� �븣吏� 紐삵븯�룄濡� 硫붿떆吏�瑜� 蹂��삎
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愿��슜 �븫�샇 諛⑹떇 遺꾩꽍.ppt
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