{"id":45425,"date":"2021-10-13T21:39:56","date_gmt":"2021-10-13T12:39:56","guid":{"rendered":"https:\/\/www.charlezz.com\/?p=45425"},"modified":"2021-10-13T21:39:56","modified_gmt":"2021-10-13T12:39:56","slug":"%ec%95%94%ed%98%b8%ed%99%94%ec%99%80-%ea%b4%80%eb%a0%a8%eb%90%9c-%ed%82%a4%ec%9b%8c%eb%93%9c-%ea%b3%b5%eb%b6%80%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/charlezz.com\/?p=45425","title":{"rendered":"\uc554\ud638\ud654\uc640 \uad00\ub828\ub41c \ud0a4\uc6cc\ub4dc \uacf5\ubd80\ud558\uae30"},"content":{"rendered":"<h2 cid=\"n2\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">Encryption\/Decryption<\/span><\/h2>\n<p cid=\"n3\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc544\uc9c1 \uc554\ud638\ud654\ub418\uc9c0 \uc54a\uc740 \uba54\uc2dc\uc9c0\ub97c \ud3c9\ubb38(plaintext)\uc774\ub77c\ud55c\ub2e4.<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">\uc554\ud638\ud654 \ub41c \uba54\uc2dc\uc9c0\ub294 \uc554\ud638\ubb38(ciphertext)\ub77c\uace0 \ud55c\ub2e4.<\/span><\/p>\n<p cid=\"n4\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ud3c9\ubb38\uacfc \uc554\ud638\ubb38 \uc0ac\uc774\uc5d0\uc11c\ub294 \ub450\uac1c\uc758 \uae30\ub2a5\uc774 \uc874\uc7ac\ud55c\ub2e4.<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">\ubc14\ub85c \uc554\ud638\ud654\uc640 \ubcf5\ud638\ud654\ub2e4.<\/span><\/p>\n<p cid=\"n5\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc554\ud638\ud654(Encryption)\ub294 \ud3c9\ubb38\uc744 \uc5b4\ub5a4 \uc554\ud638\ud654 \ud568\uc218\ub97c \ud1b5\ud574 \uc554\ud638\ubb38\uc73c\ub85c \ubc14\uafb8\ub294 \uac83\uc744 \ub9d0\ud55c\ub2e4.<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">\ubcf5\ud638\ud654(Decryption)\uc740 \uc554\ud638\ubb38\uc744 \uc5b4\ub5a4 \ubcf5\ud638\ud654 \ud568\uc218\ub97c \ud1b5\ud574 \ud3c9\ubb38\uc73c\ub85c \ubc14\uafb8\ub294 \uac83\uc744 \ub9d0\ud55c\ub2e4.<\/span><\/p>\n<h3 cid=\"n6\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\uc554\ud638\uc758 \uc791\ub3d9\ubc29\uc2dd<\/span><\/h3>\n<p cid=\"n7\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc554\ud638\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ub450\uac1c\uc758 \uc8fc\ub41c \uad6c\uc131\uc694\uc18c\ub85c \uc774\ub8e8\uc5b4\uc9c4\ub2e4.<\/span><\/p>\n<ul class=\"ul-list\" cid=\"n8\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n9\" mdtype=\"list_item\">\n<p cid=\"n10\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uce58\ud658(permutation) : \uc8fc\uc5b4\uc9c4 \ud55c \ud56d\ubaa9\uc744 \ubcc0\ud658\ud558\ub294 \ud568\uc218\uc778\ub370, \uac01 \ud56d\ubaa9\uc5d0 \uace0\uc720\ud55c \uc5ed\uc6d0\uc774 \uc874\uc7ac\ud574\uc57c \ud55c\ub2e4\ub294 \uc870\uac74\uc774 \ubd99\ub294\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n11\" mdtype=\"list_item\">\n<p cid=\"n12\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc6b4\uc601 \ubaa8\ub4dc(mode of operation) : \uce58\ud658\uc744 \uc774\uc6a9\ud574\uc11c \uc784\uc758\uc758 \uae38\uc774\uc758 \uba54\uc2dc\uc9c0\ub97c \ucc98\ub9ac\ud558\ub294 \ub370 \uc4f0\uc774\ub294 \uc54c\uace0\ub9ac\uc998\uc774\ub2e4.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 cid=\"n13\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\ub300\uce6d \ud0a4 \uc554\ud638<\/span><\/h2>\n<p cid=\"n14\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub300\uce6d \ud0a4 \uc554\ud638\ub294 \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc758 \ud55c \uc885\ub958\ub85c, \uc554\ud638\ud654\uc640 \ubcf5\ud638\uc640\uc5d0 \uac19\uc740 \uc554\ud638\ud0a4\ub97c \uc4f0\ub294 \uc54c\uace0\ub9ac\uc998\uc744 \uc758\ubbf8 \ud55c\ub2e4.<\/span><\/p>\n<p cid=\"n15\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub300\uce6d \ud0a4 \uc554\ud638\uc5d0\uc11c\ub294 \uc554\ud638\ud654\ub97c \ud558\ub294 \uce21\uacfc \ubcf5\ud638\ud654\ub97c \ud558\ub294 \uce21\uc774 \uac19\uc74c \ud0a4\ub97c \uacf5\uc720\ud574\uc57c \ud55c\ub2e4. \uc774\ub7ec\ud55c \uc810\uc774 \ube44\ub300\uce6d\ud0a4 \uc554\ud638\ud654 \ubc29\uc2dd\uacfc \ub2e4\ub978\uc810\uc774\uba70, \ub300\ubd80\ubd84\uc758 \ub300\uce6d \ud0a4 \uc554\ud638\ub294 \ube44\ub300\uce6d \ud0a4 \ubc29\uc2dd\uacfc \ube44\uad50\ud558\uc5ec \uacc4\uc0b0 \uc18d\ub3c4\uac00 \ube60\ub974\ub2e4\ub294 \uc7a5\uc810\uc744 \uac00\uc9c4\ub2e4. <\/span><\/p>\n<p cid=\"n16\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub300\uce6d \ud0a4 \uc554\ud638\ub294 \uc554\ud638\ud654\ud558\ub294 \ub2e8\uc704\uc5d0 \ub530\ub77c \ube14\ub85d \uc554\ud638\uc640 \uc2a4\ud2b8\ub9bc \uc554\ud638\ub85c \ub098\ub20c \uc218 \uc788\ub2e4.<\/span><\/p>\n<ul class=\"ul-list\" cid=\"n17\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n18\" mdtype=\"list_item\">\n<p cid=\"n19\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d \uc554\ud638 : \uc815\ud574\uc9c4 \ud55c \ub2e8\uc704(\ube14\ub85d)\uc744 \uc785\ub825 \ubc1b\uc544 \uc554\ud638\ud654 \ube14\ub7ed\uc744 \uc0dd\uc131<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n20\" mdtype=\"list_item\">\n<p cid=\"n21\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc2a4\ud2b8\ub9bc \uc554\ud638 : \uc5f0\uc18d\uc801\uc778 \ube44\ud2b8\/\ubc14\uc774\ud2b8\ub97c \uc785\ub825\ubc1b\uc544 \uc554\ud638\ud654 \ube44\ud2b8\/\ubc14\uc774\ud2b8\ub97c \uc0dd\uc131<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 cid=\"n22\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d \uc554\ud638<\/span><\/h3>\n<p cid=\"n23\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d \uc554\ud638\ub294 \uc554\ud638\ubb38\uc744 \ub9cc\ub4e4\uae30 \uc704\ud558\uc5ec \uc554\ud638 \ud0a4\uc640 \uc54c\uace0\ub9ac\uc998\uc774 \ub370\uc774\ud130 \ube14\ub85d \ub2e8\uc704\ub85c \uc801\uc6a9\ub418\ub294 \uc554\ud638\ud654 \ubc29\ubc95\uc774\ub2e4. \ud3c9\ubb38\uc758 \ub3d9\uc77c \ube14\ub85d\ub4e4\uc774 \ud558\ub098\uc758 \uba54\uc2dc\uc9c0\uc5d0\uc11c \ub3d9\uc77c\ud55c \uc554\ud638\ubb38\uc73c\ub85c \ub418\uc9c0 \uc54a\ub3c4\ub85d \ud558\uae30 \uc704\ud574 \uc774\uc804 \uc554\ud638 \ube14\ub85d\uc758 \uc554\ud638\ubb38\uc744 \ub2e4\uc74c \ube14\ub85d\uc5d0 \uc21c\uc11c\ub300\ub85c \uc801\uc6a9\ud558\ub294 \uac83\uc774\ub2e4. \ub77c\uc6b4\ub4dc \ud568\uc218\ub97c \uc0ac\uc6a9\ud574 \ubc18\ubcf5\uc801\uc73c\ub85c \uc554\ud638\ud654 \uacfc\uc815\uc744 \uc218\ud589\ud558\ub294 \uac83\uc73c\ub85c \uc554\ud638\ud654 \uac15\ub3c4\ub97c \ud5a5\uc0c1\uc2dc\ud0a8\ub2e4. \ube14\ub85d \uc554\ud638\ub294 \uc804\uce58\uc640 \ub300\uccb4\ub97c \uc774\uc6a9\ud55c\ub2e4.<\/span><\/p>\n<p cid=\"n24\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d\uc554\ud638\ub294 \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998 \ud558\ub098\uc640 \ubcf5\ud638\ud654 \uc54c\uace0\ub9ac\uc998 \ud558\ub098\ub85c \uad6c\uc131\ub41c\ub2e4. \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc740 \ud0a4\uc640 \ud3c9\ubb38\uc744 \uc785\ub825\ubc1b\uc544 \uc554\ud638\ubb38\uc744 \uc0b0\ucd9c\ud558\uace0, \ubcf5\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc740 \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc758 \uc5ed\uc5d0 \ud574\ub2f9\ud558\uba70 \uc554\ud638\ubb38\uc744 \ud3c9\ubb38\uc73c\ub85c \ubcf5\uc6d0\ud55c\ub2e4. \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uacfc \ubcf5\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc740 \uc11c\ub85c\uc758 \uc5ed\uc774\ubbc0\ub85c, \ub450 \uc54c\uace0\ub9ac\uc998\uc740 \ube44\uc2b7\ud55c \uc5f0\uc0b0\ub4e4\ub85c \uad6c\uc131\ub418\ub294 \uacbd\uc6b0\uac00 \ub9ce\ub2e4. <\/span><\/p>\n<p cid=\"n25\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d\uc554\ud638 \uad6c\uc870\uc5d0\ub294 \ud398\uc774\uc2a4\ud154 \uad6c\uc870\uc640 SPN\uad6c\uc870\uac00 \uc788\ub2e4.<\/span><\/p>\n<ul class=\"ul-list\" cid=\"n26\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n27\" mdtype=\"list_item\">\n<p cid=\"n28\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php?title=%ED%8E%98%EC%9D%B4%EC%8A%A4%ED%85%94&amp;action=edit&amp;redlink=1\"><span md-inline=\"plain\" class=\"md-plain\">\ud398\uc774\uc2a4\ud154<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">(Feistel) \uad6c\uc870: \uc554\ud638\ud654\uc640 \ubcf5\ud638\ud654 \uacfc\uc815\uc774 \ub3d9\uc77c\ud558\ub2e4. \ub610\ud55c, \ud3c9\ubb38\uc744 \uc88c, \uc6b0\ub85c \ub098\ub204\uc5b4\uc11c \ub4a4\uc9d1\uace0, <\/span><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php\/XOR\"><span md-inline=\"plain\" class=\"md-plain\">XOR<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">\uacfc \uac19\uc740 \uacfc\uc815\uc744 \uc9c0\ub098 \ud63c\ub3c8\uacfc \ud655\uc0b0\uc744 \ucda9\uc871\ud55c\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n29\" mdtype=\"list_item\">\n<p cid=\"n30\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php?title=SPN&amp;action=edit&amp;redlink=1\"><span md-inline=\"plain\" class=\"md-plain\">SPN<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">(Substitution-Permutation Network) \uad6c\uc870: <\/span><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php?title=%EB%8C%80%EC%B2%B4&amp;action=edit&amp;redlink=1\"><span md-inline=\"plain\" class=\"md-plain\">\ub300\uccb4<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">(substitution)\uc640 <\/span><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php?title=%EC%B9%98%ED%99%98&amp;action=edit&amp;redlink=1\"><span md-inline=\"plain\" class=\"md-plain\">\uce58\ud658<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">(permutation)\uc744 \uc774\uc6a9\ud558\uc5ec \uc5f0\uc0b0\uc744 \uc2e4\ud589\ud558\ub2e4. \ubcd1\ub82c\uc5f0\uc0b0\uc774 \uac00\ub2a5\ud558\uc5ec \ud398\uc774\uc2a4\ud154 \uad6c\uc870\uc5d0 \ube44\ud574 \uc5f0\uc0b0\uc18d\ub3c4\uac00 \ube60\ub974\uc9c0\ub9cc \ubcf5\ud638\ud654 \uc2dc\uc5d0 \ubcf5\ud638\ud654 \ub8e8\ud2f4\uc744 \ubcc4\ub3c4\ub85c \uad6c\ud604\ud558\uc5ec\uc57c \ud55c\ub2e4.<\/span><\/p>\n<\/li>\n<\/ul>\n<h4 cid=\"n31\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d\uc554\ud638\uc758 \ud2b9\uc9d5<\/span><\/h4>\n<p cid=\"n32\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d \uc554\ud638\uc758 \ud2b9\uc9d5\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/span><\/p>\n<ul class=\"ul-list\" cid=\"n33\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n34\" mdtype=\"list_item\">\n<p cid=\"n35\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc18c\ud504\ud2b8\uc6e8\uc5b4\uc801\uc73c\ub85c \uad6c\ud604 \uac00\ub2a5\ud558\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n36\" mdtype=\"list_item\">\n<p cid=\"n37\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc804\uce58\uc640 \uce58\ud658\uc744 \ubc18\ubcf5\ud558\uc5ec \ud3c9\ubb38\uacfc \uc554\ud638\ubb38\uc73c\ub85c\ubd80\ud130 \ud0a4\uc5d0 \ub300\ud55c \uc815\ubcf4\ub97c \ucc3e\uae30 \uc5b4\ub835\uac8c \ud55c\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n38\" mdtype=\"list_item\">\n<p cid=\"n39\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub370\uc774\ud130 \uc804\uc1a1, \ub300\uc6a9\ub7c9 \ub370\uc774\ud130 \uc800\uc7a5 \uc2dc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n40\" mdtype=\"list_item\">\n<p cid=\"n41\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub290\ub9b0 \uc554\ud638\ud654 \uc18d\ub3c4<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n42\" mdtype=\"list_item\">\n<p cid=\"n43\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc5d0\ub7ec \uc804\ud30c\uc758 \ubb38\uc81c<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n44\" mdtype=\"list_item\">\n<p cid=\"n45\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub370\uc774\ud130\uc758 \ud06c\uae30\uac00 \uc791\uc744 \uacbd\uc6b0 \ud6a8\uc728\uc801\uc73c\ub85c \uc554\ud638\ud654\ud558\uae30\uc5d0\ub294 \uc801\ud569\ud558\uc9c0 \uc54a\ub2e4.<\/span><\/p>\n<\/li>\n<\/ul>\n<h4 cid=\"n46\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d\uc554\ud638\uc758 \uc885\ub958<\/span><\/h4>\n<ul class=\"ul-list\" cid=\"n47\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n48\" mdtype=\"list_item\">\n<p cid=\"n49\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">DES :<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">DES\ub294 \ud3c9\ubb38\uc744 64\ube44\ud2b8\ub85c \ub098\ub220 56\ube44\ud2b8\uc758 \ud0a4\ub97c \uc774\uc6a9\ud558\uc5ec \ub2e4\uc2dc 64\ube44\ud2b8\uc758 \uc554\ud638\ubb38\uc744 \ub9cc\ub4e4\uc5b4 \ub0b4\ub294 \uc554\ud638 \uc54c\uace0\ub9ac\uc998\uc774\ub2e4. \uc774\ub54c \uc554\ud638\ubb38\uc740 16\ubc88\uc758 \ubc18\ubcf5\uc744 \ud1b5\ud574 \ub9cc\ub4e4\uc5b4\uc9c0\ub294\ub370 \uc774\ub54c 16\ubc88\uc758 \ubc18\ubcf5\ub3d9\uc548 \ub77c\uc6b4\ub4dc \ud568\uc218\ub97c \uc801\uc6a9\ud558\uace0 \uc774\ub54c \ub77c\uc6b4\ub4dc \ud568\uc218\uc5d0 \uc801\uc6a9\ub418\ub294 \ud0a4\ub294 \ub77c\uc6b4\ub4dc \ud0a4\uc774\ub2e4. \uc774\ub54c \ub77c\uc6b4\ub4dc \ud0a4\ub294 \ud0a4 \uc2a4\ucf00\uc904\uc5d0 \uc758\ud574 \ub77c\uc6b4\ub4dc \ud0a4\ub97c \ubc1c\uc0dd\uc2dc\ud0a8\ub2e4. 56\ube44\ud2b8 \ud0a4\ub294 \uc624\ub298\ub0a0 \ucef4\ud4e8\ud305 \ud658\uacbd\uc5d0\uc11c\ub294 \ub108\ubb34 \uc9e7\ub2e4\ub294 \uac83\uc774 \ubb38\uc81c\ub2e4. 98\ub144\ub3c4\uc5d0 \ubb34\ucc28\ubcc4 \uacf5\uaca9\ubc29\uc2dd\uc73c\ub85c 2\uc77c \ub0b4\uc5d0 \uc554\ud638\ub97c \ud138\uc5b4\ub0c8\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n50\" mdtype=\"list_item\">\n<p cid=\"n51\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">AES :<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">AES(Advanced Encryption Standard)\ub294 DES\uc758 \uc554\ud638\ud654 \uac15\ub3c4\uac00 \uc57d\ud574\uc9c0\uba74\uc11c \uac1c\ubc1c\ub418\uc5c8\uc73c\uba70 \ud5a5\ud6c4 30\ub144 \uc815\ub3c4 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc548\uc815\uc131, 128\ube44\ud2b8 \uc554\ud638\ud654 \ube14\ub85d, \ub2e4\uc591\ud55c \ud0a4\uc758 \uae38\uc774(128\/192\/256 \ube44\ud2b8)\ub97c \uac16\ucd98 \ub300\uce6d\ud615 \uc554\ud638 \uc54c\uace0\ub9ac\uc998\uc774\ub2e4. \uace0\uae09 \uc554\ud638\ud654 \ud45c\uc900\uc774\ub77c\uace0 \ud55c\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n52\" mdtype=\"list_item\">\n<p cid=\"n53\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc544\ub9ac\uc544<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n54\" mdtype=\"list_item\">\n<p cid=\"n55\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc2dc\ub4dc<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n56\" mdtype=\"list_item\">\n<p cid=\"n57\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ud558\uc774\ud2b8<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 cid=\"n58\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\uc2a4\ud2b8\ub9bc \uc554\ud638<\/span><\/h3>\n<p cid=\"n59\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ube14\ub85d \uc554\ud638\ub294 \ud3c9\ubb38\uc744 \uad6c\uc131\ud558\ub294 \ube44\ud2b8\ub4e4\uc744 \ube14\ub85d\uc774\ub77c\ub294 \ub2e8\uc704\ub85c \uc870\uac01\ub0b4\uc11c \ud0a4\uc758 \ube44\ud2b8\ub4e4\uacfc \ub4a4\uc11e\uc5b4\uc11c \uac19\uc740 \ud06c\uae30\uc758 \uc554\ud638\ubb38 \ube14\ub85d\ub4e4\uc744 \uc0b0\ucd9c\ud55c\ub2e4. \uadf8\ub7ec\ud55c \ube14\ub85d\uc740 \ud754\ud788 64\ube44\ud2b8 \ub610\ub294 128\ube44\ud2b8\ub2e4. \ubc18\uba74 \uc2a4\ud2b8\ub9bc \uc554\ud638\ub294 \ud3c9\ubb38\uc758 \ube44\ud2b8\ub4e4\uacfc \ud0a4\uc758 \ube44\ud2b8\ub4e4\uc744 \ub4a4\uc11e\uc9c0 \uc54a\ub294\ub2e4. \ub300\uc2e0 \uc2a4\ud2b8\ub9bc \uc554\ud638\ub294 \ud0a4\ub85c\ubd80\ud130 \uc720\uc0ac\ub09c\uc218 \ube44\ud2b8\ub4e4\uc744 \uc0dd\uc131\ud558\uace0, \uadf8\uac83\uc744 \ud3c9\ubb38\uacfc XOR\ud574\uc11c \uc554\ud638\ubb38\uc744 \uc0dd\uc131\ud55c\ub2e4.<\/span><\/p>\n<p cid=\"n60\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc2a4\ud2b8\ub9bc \uc554\ud638\ub294 \ud558\ub4dc\uc6e8\uc5b4 \uad6c\ud604\uc774 \uac04\ud3b8\ud558\uba70 \uc18d\ub3c4\uac00 \ube60\ub974\uae30 \ub54c\ubb38\uc5d0 \ubb34\uc120 \ud1b5\uc2e0 \ub4f1\uc758 \ud658\uacbd\uc5d0 \uc8fc\ub85c \uc0ac\uc6a9\ub41c\ub2e4. <\/span><\/p>\n<h4 cid=\"n61\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\uc2a4\ud2b8\ub9bc \uc554\ud638\uc758 \uc885\ub958 (\ub3d9\uae30\uc2dd vs \ube44\ub3d9\uae30\uc2dd)<\/span><\/h4>\n<p cid=\"n62\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ud06c\uac8c \ubcf4\uc544\uc11c \uc2a4\ud2b8\ub9bc \uc554\ud638\ub294 \uc0c1\ud0dc \uc788\ub294 \uc2a4\ud2b8\ub9bc \uc554\ud638(\ub3d9\uae30\uc2dd)\uc640 \uce74\uc6b4\ud130 \uae30\ubc18 \uc2a4\ud2b8\ub9bc \uc554\ud638(\ube44\ub3d9\uae30\uc2dd)\ub85c \ub098\ub25c\ub2e4. <\/span><\/p>\n<p cid=\"n63\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc2a4\ud2b8\ub9bc \uc554\ud638\uc758 \ub09c\uc218\uc5f4\uc744 \uc554\ud638\ud654\ud560 \uc785\ub825\uac12\uacfc \ub3c5\ub9bd\uc801\uc73c\ub85c \uc0dd\uc131\ud558\ub294 \uacbd\uc6b0\ub97c \ub3d9\uae30\uc2dd(synchronous) \uc2a4\ud2b8\ub9bc \uc554\ud638\ub85c \ubd80\ub978\ub2e4. \ubc18\ub300\ub85c \uc785\ub825\uac12\uc774 \ub09c\uc218\uc5f4 \uc0dd\uc131\uc5d0 \uc601\ud5a5\uc744 \ub07c\uce58\ub294 \uacbd\uc6b0 \ube44\ub3d9\uae30\uc2dd(asynchronous) \ud639\uc740 \uc790\uae30 \ub3d9\uae30(self-synchronizing) \uc2a4\ud2b8\ub9bc \uc554\ud638\ub85c \ubd80\ub978\ub2e4.<\/span><\/p>\n<p cid=\"n64\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\ub3d9\uae30\uc2dd \uc2a4\ud2b8\ub9bc \uc554\ud638<\/span><\/strong><\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">\ub3d9\uae30\uc2dd \uc2a4\ud2b8\ub9bc \uc554\ud638\ub294 \ub09c\uc218\uc5f4\uc744 \uc0dd\uc131\ud558\uae30 \uc704\ud574 \ub0b4\ubd80 \uc0c1\ud0dc(internal state)\ub97c \uc720\uc9c0\ud558\uba70, \uc774\uc804 \ub0b4\ubd80 \uc0c1\ud0dc\uc5d0\uc11c \uc0c8\ub85c\uc6b4 \ub0b4\ubd80 \uc0c1\ud0dc\uc640 \uc720\uc0ac\ub09c\uc218\ub97c \uc5bb\ub294\ub2e4. \ubb38\uc790\uc5f4\uc758 \uc554\ud638\ud654 \ubc0f \ubcf5\ud638\ud654\ub294 \uc0dd\uc131\ub41c \uc720\uc0ac\ub09c\uc218\uc5f4\uacfc \uc785\ub825\uac12\uc744 XOR\ud558\ub294 \ubc29\uc2dd\uc73c\ub85c \uc774\ub8e8\uc5b4\uc9c4\ub2e4.<\/span><\/p>\n<p cid=\"n65\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub3d9\uae30\uc2dd \uc2a4\ud2b8\ub9bc \uc554\ud638\uc5d0\uc11c\ub294 \uc554\ud638\ud654 \ubc0f \ubcf5\ud638\ud654\ud560 \ubb38\uc790\uc5f4\uc5d0\uc11c \ud2b9\uc815 \uc704\uce58 \ube44\ud2b8\ub97c \ubcc0\uacbd\ud560 \uacbd\uc6b0 \uc554\ud638\ud654\ub41c \uacb0\uacfc\uc5d0\uc11c\ub3c4 \uac19\uc740 \uc704\uce58 \ube44\ud2b8\uac00 \ubcc0\uacbd\ub418\uba70, \ub2e4\ub978 \uc704\uce58\uc758 \ube44\ud2b8\ub294 \ubcc0\uacbd\ub418\uc9c0 \uc54a\ub294\ub2e4. \ub530\ub77c\uc11c \uc554\ud638\ud654 \ubb38\uc790\uc5f4\uc744 \uc804\uc1a1\ud560 \uc2dc\uc5d0 \ud2b9\uc815 \ube44\ud2b8\uac00 \ub2e4\ub978 \uac12\uc73c\ub85c \uc190\uc0c1\ub418\uc5c8\uc5b4\ub3c4 \ubcf5\ud638\ud654 \uc2dc \ub2e4\ub978 \ube44\ud2b8\uc5d0\ub294 \uc601\ud5a5\uc744 \ubbf8\uce58\uc9c0 \uc54a\ub294\ub2e4. \ud558\uc9c0\ub9cc \uc804\uc1a1 \uc624\ub958\uc5d0\uc11c \ube44\ud2b8\uac00 \uc0ac\ub77c\uc9c0\uac70\ub098 \uc798\ubabb\ub41c \ube44\ud2b8\uac00 \ucd94\uac00\ub418\ub294 \uacbd\uc6b0 \uc624\ub958\uac00 \ub09c \uc2dc\uc810 \uc774\ud6c4\uc758 \ubcf5\ud638\ud654\uac00 \uc2e4\ud328\ud558\uac8c \ub418\uba70, \ub530\ub77c\uc11c \uc804\uc1a1 \uc2dc\uc5d0 \ub3d9\uae30\ud654(synchronize)\uac00 \ud544\uc694\ud558\ub2e4.<\/span><\/p>\n<p cid=\"n66\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ub610\ud55c, \uac19\uc740 \uc554\ud638\ud654 \ud0a4\ub85c \uc5ec\ub7ec \uc785\ub825\uac12\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc73c\uba74 \uc774\ub97c \uc774\uc6a9\ud55c \uc554\ud638\uacf5\uaca9(cryptanalysis)\uc774 \uac00\ub2a5\ud558\ub2e4.<\/span><\/p>\n<p cid=\"n67\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\ube44\ub3d9\uae30\uc2dd \uc2a4\ud2b8\ub9bc \uc554\ud638<\/span><\/strong><\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">\ube44\ub3d9\uae30\uc2dd \uc2a4\ud2b8\ub9bc \uc554\ud638\ub294 \ub09c\uc218\uc5f4\uc744 \uc0dd\uc131\ud560 \ub54c \uc554\ud638\ud654 \ud0a4\uc640 \ud568\uaed8 \uc774\uc804\uc5d0 \uc554\ud638\ud654\ub41c \ubb38\uc790\uc5f4 \uc77c\ubd80\ub97c \uc0ac\uc6a9\ud55c\ub2e4. \uc774 \uc554\ud638\uc758 \ub0b4\ubd80 \uc0c1\ud0dc\ub294 \uc774\uc804 \ub0b4\ubd80 \uc0c1\ud0dc\uc5d0 \uc758\uc874\ud558\uc9c0 \uc54a\ub294\ub2e4. \ub530\ub77c\uc11c \uc554\ud638\ud654 \ubb38\uc790\uc5f4\uc744 \uc804\uc1a1\ud560 \uc2dc\uc5d0 \uc77c\ubd80 \ube44\ud2b8\uac00 \uac12\uc774 \ubc14\ub00c\uac70\ub098, \ud639\uc740 \ube44\ud2b8\uac00 \uc0ac\ub77c\uc9c0\uace0 \ucd94\uac00\ub418\ub294 \uc624\ub958\uac00 \ubc1c\uc0dd\ud558\uc5ec\ub3c4, \uc77c\ubd80\ubd84\ub9cc\uc774 \ubcf5\ud638\ud654\uc5d0 \uc2e4\ud328\ud558\uba70 \uadf8 \uc774\ud6c4\uc5d0\ub294 \ub2e4\uc2dc \uc815\uc0c1\uc801\uc778 \ubcf5\ud638\ud654 \uac12\uc744 \uc5bb\uc744 \uc218 \uc788\ub294 \uc790\uae30 \ub3d9\uae30\uc131\uc744 \uac00\uc9c4\ub2e4.<\/span><\/p>\n<h2 cid=\"n68\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\ud574\uc2dc \ud568\uc218<\/span><\/h2>\n<p cid=\"n69\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc784\uc758\uc758 \uae38\uc774\uc758 \ub370\uc774\ud130\ub97c \uace0\uc815\ub41c \uae38\uc774\uc758 \ub370\uc774\ud130\ub85c \ub9e4\ud551\ud558\ub294 \ud568\uc218\ub97c \ub9d0\ud55c\ub2e4. \ud574\uc2dc \ud568\uc218\uc5d0 \uc5bb\uc5b4\uc9c0\ub294 \uac12\uc740 <\/span><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\ud574\uc2dc\uac12<\/span><\/strong><\/span><span md-inline=\"plain\" class=\"md-plain\">, <\/span><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\ud574\uc2dc\ucf54\ub4dc<\/span><\/strong><\/span><span md-inline=\"plain\" class=\"md-plain\">, <\/span><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\ud574\uc2dc \uccb4\ud06c\uc12c<\/span><\/strong><\/span><span md-inline=\"plain\" class=\"md-plain\"> \ub610\ub294 \uac04\ub2e8\ud788 <\/span><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\ud574\uc2dc<\/span><\/strong><\/span><span md-inline=\"plain\" class=\"md-plain\">\ub77c\uace0 \ud55c\ub2e4.<\/span><\/p>\n<p cid=\"n70\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc554\ud638\ud559\uc801 \ud574\uc2dc \ud568\uc218\uc640 \ube44\uc554\ud638\ud559\uc801 \ud574\uc2dc \ud568\uc218\ub97c \uc798 \uad6c\ubd84\ud574\uc57c \ud55c\ub2e4. \ube44\uc554\ud638\ud559\uc801 \ud574\uc2dc \ud568\uc218\ub294 \ud574\uc2dc \ud14c\uc774\ube14 \uac19\uc740 \uc790\ub8cc\uad6c\uc870\uc5d0 \uc4f0\uc774\uac70\ub098 \uc6b0\ubc1c\uc801\uc778 \uc624\ub958\ub97c \uac80\ucd9c\ud558\ub294\ub370 \uc4f0\uc778\ub2e4. \uc989, \ubcf4\uc548\uc131\uc5d0 \ub300\ud55c \uac83\uc740 \uace0\ub824\ub418\uc9c0 \uc54a\ub294\ub2e4. \uc608\ub97c\ub4e4\uc5b4 CRC(cyclic redundancy check:\uc21c\ud658 \uc911\ubcf5 \uac80\uc0ac)\ub294 \ud30c\uc77c\uc758 \uc6b0\ubc1c\uc801\uc778 \uc218\uc815\uc744 \uac80\ucd9c\ud558\ub294 \ub370 \uc4f0\uc774\ub294 \ube44\uc554\ud638\ud559\uc801 \ud574\uc2dc \ud568\uc218\uc774\ub2e4.<\/span><\/p>\n<p cid=\"n71\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc554\ud638\ud559\uc801\uc778 \ud574\uc2dc \ud568\uc218\ub294 \uc554\ud638\uc758 \ubcf4\uc548\uc131\uacfc\ub294 \uc870\uae08 \ub2e4\ub978 \uac1c\ub150\uc774\ub2e4. \uc554\ud638\ub4e4\uc740 \uc790\ub8cc\uc758 \ud3c9\ubb38\uc744 \uc554\ud638\ud654\ud574\uc11c \uc800\uc7a5 \ub610\ub294 \uc804\uc1a1\ud568\uc73c\ub85c\uc368 \uadf8 \uc790\ub8cc\ub97c \ub2e4\ub978 \ub204\uad70\uac00\uac00 \uc54c\uc544\ub0b4\uc9c0 \ubabb\ud558\uac8c \ud558\ub294\ub370 \uc8fc\ub825\ud55c\ub2e4. \uc989, \uc554\ud638\uc758 \ubaa9\uc801\uc740 \uc790\ub8cc\uc758 \uae30\ubc00\uc131\uc744 \uc9c0\ud0a4\ub294 \uac83\uc774\ub2e4. \uadf8\ub7ec\ub098 \ud574\uc2dc \ud568\uc218\ub294 \uc911\uac04\uc5d0 \ub204\uad70\uac00\uac00 \uc790\ub8cc\ub97c \uc218\uc815\ud588\ub2e4\uba74 \uadf8 \uc0ac\uc2e4\uc744 \uc54c \uc218 \uc788\uac8c \ud558\uace0, \uc790\ub8cc\uc758 \ubb34\uacb0\uc131\uc744 \uc9c0\ud0a4\ub294 \uac83\uc774 \ubaa9\uc801\uc774\ub2e4. \uc5b4\ub5a4 \ud574\uc2dc \ud568\uc218\uac00 \uc548\uc804\ud558\ub2e4\ub294 \uac83\uc740 \uc11c\ub85c \ub2e4\ub978 \ub450 \uc790\ub8cc\uc5d0 \ub300\ud574 \ud56d\uc0c1 \uc11c\ub85c \ub2e4\ub978 \ud574\uc2dc \uac12\uc744 \uc0b0\ucd9c \ud558\ub294 \uac83\uc774\ub2e4. \uadf8\ub807\uac8c \ud568\uc73c\ub85c\uc368 \uadf8 \uc790\ub8cc\uc758 \uc2dd\ubcc4\uc790 \uc5ed\ud560\uc744 \ud55c\ub2e4.<\/span><\/p>\n<p cid=\"n72\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ud574\uc2dc \ud568\uc218\uc758 \uac00\uc7a5 \ud754\ud55c \uc6a9\ub3c4\ub294 \ub514\uc9c0\ud138 \uc11c\uba85\uc774 \uc788\ub2e4. \ub514\uc9c0\ud138 \uc11c\uba85\uc744 \uc0ac\uc6a9\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc740 \uc11c\uba85\ud560 \uba54\uc2dc\uc9c0 \uc790\uccb4\uac00 \uc544\ub2cc \uadf8 \uba54\uc2dc\uc9c0\uc758 \ud574\uc2dc\ub97c \ucc98\ub9ac \ud55c\ub2e4. \uc774\ub54c \ud574\uc2dc\ub294 \uba54\uc2dc\uc9c0\uc758 \uc2dd\ubcc4\uc790 \uc5ed\ud560\uc744 \ud55c\ub2e4. \ub530\ub77c\uc11c \uba54\uc2dc\uc9c0\uc5d0\uc11c \ube44\ud2b8 \ud558\ub098\ub9cc \ubcc0\uacbd\ub418\uc5b4\ub3c4 \uba54\uc2dc\uc9c0\uc758 \ud574\uc2dc \uac12\uc774 \uc774\uc804\uacfc \uc644\uc804\ud788 \ub2ec\ub77c\uc9c4\ub2e4. \uc774\ub97c \ud1b5\ud574 \uba54\uc2dc\uc9c0\uac00 \uc218\uc815\ub418\uc9c0 \uc54a\uc558\uc74c\uc744 \uc99d\uba85\ud55c\ub2e4. \uba54\uc2dc\uc9c0\uc758 \ud574\uc2dc\ub97c \uc11c\uba85\ud558\ub294 \uac83\uc740 \uba54\uc2dc\uc9c0 \uc790\uccb4\ub97c \uc11c\uba85\ud558\ub294 \uac83\ub9cc\ud07c\uc774\ub098 \uc548\uc804\ud558\uace0, \ube60\ub974\ub2e4.<\/span><\/p>\n<h3 cid=\"n73\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">MessageDigest<\/span><\/h3>\n<p cid=\"n74\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">MessageDigest \ud074\ub798\uc2a4\ub294 SHA-1 \ub610\ub294 SHA-256\uacfc \uac19\uc740 \uc54c\uace0\ub9ac\uc998\uc758 \uae30\ub2a5\uc744 \uc81c\uacf5\ud55c\ub2e4. \uc784\uc758 \ud06c\uae30\uc758 \ub370\uc774\ud130\ub97c \uac00\uc838\uc640 \uace0\uc815 \uae38\uc774 \ud574\uc2dc \uac12\uc744 \ucd9c\ub825\ud558\ub294 \uc548\uc804\ud55c \ub2e8\ubc29\ud5a5 \ud574\uc2dc \ud568\uc218\ub2e4. <\/span><\/p>\n<p cid=\"n75\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc774 \ud074\ub798\uc2a4\ub294 \ucd94\uc0c1\uc801\uc774\uba70, \uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 \uac1c\ubc1c\uc790\ub294 \uc774 MessageDigest \ud074\ub798\uc2a4\uc5d0 \uc815\uc758\ub41c \uba54\uc11c\ub4dc\uc5d0 \ucd08\uc810\uc744 \ub9de\ucdb0 \uc0ac\uc6a9\ud558\uba74 \ub41c\ub2e4. <\/span><\/p>\n<p cid=\"n76\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc790\ubc14 \ud50c\ub7ab\ud3fc\uc5d0\uc11c\uc758 \ubaa8\ub4e0 \uad6c\ud604\uc740 \ub2e4\uc74c \ud45c\uc900 MessageDigest\uc54c\uace0\ub9ac\uc998\uc744 \uc9c0\uc6d0\ud55c\ub2e4.<\/span><\/p>\n<ul class=\"ul-list\" cid=\"n77\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n78\" mdtype=\"list_item\">\n<p cid=\"n79\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">MD5:128\ube44\ud2b8 \ud574\uc2dc \ud568\uc218\ub2e4. \uc8fc\ub85c \ud504\ub85c\uadf8\ub7a8\uc774\ub098 \ud30c\uc77c\uc774 \uc6d0\ubcf8 \uadf8\ub300\ub85c\uc778\uc9c0\ub97c \ud655\uc778\ud558\ub294 \ubb34\uacb0\uc131 \uac80\uc0ac \ub4f1\uc5d0 \uc0ac\uc6a9\ub41c\ub2e4. 1996\ub144\uc5d0 \uc124\uacc4\uc0c1 \uacb0\ud568\uc774 \ubc1c\uacac\ub418\uc5b4 SHA-1\uacfc \uac19\uc740 \uc548\uc804\ud55c \uc54c\uace0\ub9ac\uc998\uc744 \uc0ac\uc6a9\ud560 \uac83\uc744 \uad8c\uc7a5\ud55c\ub2e4. MD5\ub97c \ubcf4\uc548 \uad00\ub828 \uc6a9\ub3c4\ub85c \uc4f0\ub294 \uac83\uc740 \uad8c\uc7a5\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n80\" mdtype=\"list_item\">\n<p cid=\"n81\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">SHA-1:\uc784\uc758\uc758 \uae38\uc774\uc758 \uc785\ub825\ub370\uc774\ud130\ub97c 160\ube44\ud2b8\uc758 \ucd9c\ub825\ub370\uc774\ud130\ub85c \ubc14\uafbc\ub2e4. 1995\ub144 \uac1c\uc815\ud310 FIPS PUB 180-1\ub85c \ubc1c\ud45c\ub418\uc5c8\uace0 \uba54\uc2dc\uc9c0 \uae38\uc774\uc5d0 \ub300\ud55c \uc0c1\ud55c\uc774 \uc874\uc7ac\ud55c\ub2e4. <\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n82\" mdtype=\"list_item\">\n<p cid=\"n83\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">SHA-256:SHA \uc54c\uace0\ub9ac\uc998\uc758 \ud55c\uc885\ub958\ub85c 256\ube44\ud2b8\ub85c \uad6c\uc131\ub418\uba70 64\uc790\ub9ac \ubb38\uc790\uc5f4\uc744 \ubc18\ud658\ud55c\ub2e4. SHA-2 \uacc4\uc5f4 \uc911 \ud558\ub098\ub85c \ube14\ub85d\uccb4\uc778\uc5d0\uc11c \uac00\uc7a5\ub9ce\uc774 \ucc44\ud0dd\ud558\uc5ec \uc0ac\uc6a9\ud55c\ub2e4.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 cid=\"n84\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\ud30c\uc77c\uc758 \uc704\ubcc0\uc870\ub97c \uac80\uc99d\ud558\uae30 \uc704\ud55c Checksum \uc5bb\ub294 \uc608\uc81c<\/span><\/h3>\n<p cid=\"n85\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"url\" class=\"md-link md-pair-s\" spellcheck=\"false\"><a href=\"https:\/\/howtodoinjava.com\/java\/io\/sha-md5-file-checksum-hash\/\">https:\/\/howtodoinjava.com\/java\/io\/sha-md5-file-checksum-hash\/<\/a><\/span><\/p>\n<h2 cid=\"n86\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">MAC(Message Authentication Code)<\/span><\/h2>\n<p cid=\"n87\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">MAC \uc54c\uace0\ub9ac\uc998\uc740 \uba54\uc2dc\uc9c0\uc758 <\/span><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\ubb34\uacb0\uc131<\/span><\/strong><\/span><span md-inline=\"plain\" class=\"md-plain\">\uacfc <\/span><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\uc778\uc99d\uc131<\/span><\/strong><\/span><span md-inline=\"plain\" class=\"md-plain\">\uc744 \ubcf4\ud638\ud55c\ub2e4. \uc554\ud638\uc758 \ud0a4\ub97c \uc54c\uace0 \uc788\uc73c\uba74 \uc554\ud638\ubb38\uc744 \ubcf5\ud638\ud654\ud560 \uc218 \uc788\ub4ef\uc774, MAC\uc758 \ud0a4\ub97c \uc54c\uace0 \uc788\uc73c\uba74 \uc8fc\uc5b4\uc9c4 \uba54\uc2dc\uc9c0\uac00 \uc218\uc815\ub41c \uc801\uc774 \uc5c6\uc74c\uc744 \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/span><\/p>\n<h3 cid=\"n88\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">HMAC<\/span><\/h3>\n<p cid=\"n89\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">HMAC(hash-based MAC)\uc740 \ud574\uc2dc \ud568\uc218\ub85c MAC\uc744 \uad6c\ucd95\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. MAC\uc740 \ube44\ubc00 \uac12 \uc804\uc704\ub098 \ube44\ubc00 \uac12 \ud6c4\uc704 \uad6c\uc131\uc73c\ub85c \ub9cc\ub4e0 MAC\ubcf4\ub2e4 \uc548\uc804\ud558\ub2e4. HMAC\uc740 \ubc14\ud0d5 \ud574\uc2dc \ud568\uc218\uc5d0 \ucda9\ub3cc \uc800\ud56d\uc131\uc774 \uc788\ub2e4\uba74 \uc548\uc804\ud55c \uc720\uc0ac\ub09c\uc218\ud568\uc218(PRF)\ub97c \uc0b0\ucd9c\ud55c\ub2e4. \ubcf4\uc548 \ud1b5\uc2e0 \ud504\ub85c\ud1a0\ucf5c IPSec, SSH, TLS\ub294 \ubaa8\ub450 HMAC\uc744 \uc0ac\uc6a9\ud55c\ub2e4.<\/span><\/p>\n<p cid=\"n90\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc608\uc81c : <\/span><span md-inline=\"url\" class=\"md-link md-pair-s\" spellcheck=\"false\"><a href=\"https:\/\/wan-blog.tistory.com\/24\">https:\/\/wan-blog.tistory.com\/24<\/a><\/span><\/p>\n<h3 cid=\"n91\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">CMAC<\/span><\/h3>\n<p cid=\"n92\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc554\ud638\uae30\ubc18 MAC(cipher-based MAC)\uc740 \uc8fc\uc5b4\uc9c4 \ube14\ub85d \uc554\ud638(\uc608:AES) \ud558\ub098\ub9cc\uc73c\ub85c MAC\uc744 \ub9cc\ub4e0\ub2e4. HMAC\ubcf4\ub2e4\ub294 \ub35c \uc4f0\uc774\uc9c0\ub9cc, CMAC\uc740 IPSec \ud504\ub85c\ud1a0\ucf5c \ubaa8\uc74c\uc758 \uc77c\ubd80\uc778 IKE(Internet Key Exchange) \ud504\ub85c\ud1a0\ucf5c\uc744 \ube44\ub86f\ud55c \uc5ec\ub7ec \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc4f0\uc778\ub2e4. <\/span><\/p>\n<p cid=\"n93\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uc608\uc81c : <\/span><span md-inline=\"url\" class=\"md-link md-pair-s\" spellcheck=\"false\"><a href=\"https:\/\/www.programcreek.com\/java-api-examples\/?api=org.bouncycastle.crypto.macs.CMac\">https:\/\/www.programcreek.com\/java-api-examples\/?api=org.bouncycastle.crypto.macs.CMac<\/a><\/span><\/p>\n<h2 cid=\"n94\" mdtype=\"heading\" class=\"md-end-block md-heading\"><span md-inline=\"plain\" class=\"md-plain\">\ube44\ub300\uce6d \ud0a4 \uc554\ud638<\/span><\/h2>\n<p cid=\"n95\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\ube44\ub300\uce6d \ud0a4 \uc554\ud638\ud654\uc5d0\uc11c\ub294 \ub450 \uac1c\uc758 \ud0a4\ub97c \uc0ac\uc6a9\ud55c\ub2e4. \ube44\ub300\uce6d \ud0a4 \uc554\ud638\ub294 <\/span><span md-inline=\"strong\" class=\"md-pair-s \"><strong><span md-inline=\"plain\" class=\"md-plain\">\uacf5\uac1c \ud0a4 \uc554\ud638<\/span><\/strong><\/span><span md-inline=\"plain\" class=\"md-plain\">\ub77c\uace0\ub3c4 \ud55c\ub2e4.<\/span><\/p>\n<ul class=\"ul-list\" cid=\"n96\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n97\" mdtype=\"list_item\">\n<p cid=\"n98\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uacf5\uac1c \ud0a4(public key) : \uc554\ud638\ud654\uc5d0 \uc4f0\uc774\ub294 \ud0a4, \ubaa8\ub4e0\uc774\uc5d0\uac8c \uc81c\uacf5<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n99\" mdtype=\"list_item\">\n<p cid=\"n100\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uac1c\uc778 \ud0a4(private key) : \ubcf5\ud638\ud654\uc5d0 \uc4f0\uc774\ub294 \ud0a4, \ube44\ubc00\ub9ac\uc5d0 \ubcf4\uad00.<\/span><\/p>\n<\/li>\n<\/ul>\n<p cid=\"n101\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">\uac1c\uc778 \ud0a4\ub85c\ubd80\ud130 \uacf5\uac1c \ud0a4\ub97c \uacc4\uc0b0\ud558\ub294 \uac83\uc740 \uac00\ub2a5\ud558\uc9c0\ub9cc, \uacf5\uac1c \ud0a4\ub85c\ubd80\ud130 \uac1c\uc778 \ud0a4\ub97c \uacc4\uc0b0\ud558\ub294 \uac83\uc740 \ubd88\uac00\ub2a5\ud558\ub2e4. \uc774\uac83\uc774 \ube44\ub300\uce6d \ud0a4 \uc554\ud638\ud654\uc758 \ud575\uc2ec \ub0b4\uc6a9\uc774\ub2e4. \ub300\uce6d\ud0a4 \uc554\ud654\ud654\ub294 \ud558\ub098\uc758 \ud0a4\ub97c \ud1b5\ud574 \uc554\ud638\ud654\ub97c \ud558\uace0 \ubcf5\ud638\ud654\ub294 \uc554\ud638\ud654\uc758 \uc5ed\uc774\uc9c0\ub9cc, \ube44\ub300\uce6d \ud0a4 \uc554\ud638\ud654\uc5d0\uc11c\ub294 \uc5ed\ubc29\ud5a5\uc73c\ub85c\uc758 \uacc4\uc0b0\uc774 \ubd88\uac00\ub2a5\ud558\ub2e4.<\/span><\/p>\n<ul class=\"ul-list\" cid=\"n102\" mdtype=\"list\" data-mark=\"-\">\n<li class=\"md-list-item\" cid=\"n103\" mdtype=\"list_item\">\n<p cid=\"n104\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">Diffie-Hallman :<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">1976\ub144 \uacf5\uac1c\ud0a4 \uc554\ud638 \ubc29\uc2dd\uc744 \ucd5c\ucd08\ub85c \uc81c\uc548\ud55c <\/span><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php\/%ED%9C%AB%ED%95%84%EB%93%9C_%EB%94%94%ED%94%BC\"><span md-inline=\"plain\" class=\"md-plain\">\ud72b\ud544\ub4dc \ub514\ud53c<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">(Whitfield Diffe)\uc640 <\/span><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php\/%EB%A7%88%ED%8B%B4_%ED%97%AC%EB%A7%8C\"><span md-inline=\"plain\" class=\"md-plain\">\ub9c8\ud2f4 \ud5ec\ub9cc<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">(Martin Hellman)\uc774 \ubc1c\uba85\ud55c \uc554\ud638\ud654 \uc54c\uace0\ub9ac\uc998\uc774\ub2e4. \ub514\ud53c \ud5ec\ub9cc\uc740 \ub450 \uc0ac\uc6a9\uc790 \uac04\uc5d0 \uacf5\ud1b5\uc758 \uc554\ud638\ud654\ud0a4\ub97c \uacf5\uac1c\ud0a4 \uc554\ud638 \ubc29\uc2dd\uc758 \uac1c\ub150\uc744 \uc774\uc6a9\ud558\uc5ec\uc11c \uc0ac\uc804\uc5d0 \uc5b4\ub5a0\ud55c \ube44\ubc00\ud0a4 \uad50\ud658\uc774 \uc5c6\uc774\ub3c4 \uacf5\uc911 \ud1b5\uc2e0\ub9dd \ud658\uacbd\uc5d0\uc11c \uacf5\ub3d9\ud0a4\ub97c \uc548\uc804\ud558\uac8c \uacf5\uc720\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc744 \uc81c\uc2dc\ud55c \ucd5c\ucd08\uc758 \ube44\ubc00\ud0a4 \uad50\ud658 \ud504\ub85c\ud1a0\ucf5c\uc774\ub2e4. \uac00\uc7a5 \uc624\ub798\ub41c \uacf5\uac1c\ud0a4 \uc554\ud638\ud654 \uc2dc\uc2a4\ud15c\uc73c\ub85c \uc774\uc0b0\ub85c\uadf8 \uad6c\uc870\uc758 \ubcf5\uc7a1\ud568\uc744 \ud65c\uc6a9\ud55c \ubc29\uc2dd\uc774\ub2e4. \ud604\ub300 \uc554\ud638\ud559\uc758 \ud601\uba85\uc73c\ub85c \ubd88\ub9ac\uc9c0\ub9cc, <\/span><span md-inline=\"link\" class=\"md-meta-i-c  md-link\"><a href=\"http:\/\/wiki.hash.kr\/index.php\/%EC%A4%91%EA%B0%84%EC%9E%90_%EA%B3%B5%EA%B2%A9\"><span md-inline=\"plain\" class=\"md-plain\">\uc911\uac04\uc790 \uacf5\uaca9<\/span><\/a><\/span><span md-inline=\"plain\" class=\"md-plain\">\uc5d0 \ucde8\uc57d\ud558\ub2e4\ub294 \ub2e8\uc810\uc774 \uc788\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n105\" mdtype=\"list_item\">\n<p cid=\"n106\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">RSA :<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">RSA\ub294 \ub85c\ub110\ub4dc \ub9ac\ubca0\uc2a4\ud2b8(Ronald Rivest)\uc640 \uc544\ub514 \uc0e4\ubbf8\ub974(Adi Shamir), \ub808\ub108\ub4dc \uc560\ub4e4\uba3c(Leonard Adleman) \ub4f1 3\uba85\uc758 \uc218\ud559\uc790\uc5d0 \uc758\ud574 \uac1c\ubc1c\ub41c \uc54c\uace0\ub9ac\uc998\uc744 \uc0ac\uc6a9\ud558\ub294 \uc778\ud130\ub137 \uacf5\uac1c\ud0a4 \uc554\ud638\ud654 \ubc0f \uc778\uc99d\uc2dc\uc2a4\ud15c\uc774\ub2e4. 3\uba85\uc758 \uc774\ub984 \uac00\uc6b4\ub370 \uccab \uae00\uc790\ub97c \ubaa8\uc544 \ubd99\uc778 \uc6a9\uc5b4\uc774\ub2e4. \uc554\ud638\ud654\ubfd0\ub9cc \uc544\ub2c8\ub77c \uc804\uc790\uc11c\uba85\uc774 \uac00\ub2a5\ud55c \ucd5c\ucd08\uc758 \uc54c\uace0\ub9ac\uc998\uc73c\ub85c \uc54c\ub824\uc838 \uc788\ub2e4. RSA\uac00 \uac16\ub294 \uc804\uc790\uc11c\uba85 \uae30\ub2a5\uc740 \uc778\uc99d\uc744 \uc694\uad6c\ud558\ub294 \uc804\uc790 \uc0c1\uac70\ub798 \ub4f1\uc5d0 RSA\uc758 \uad11\ubc94\uc704\ud55c \ud65c\uc6a9\uc744 \uac00\ub2a5\ud558\uac8c \ud558\uc600\ub2e4.<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\" cid=\"n107\" mdtype=\"list_item\">\n<p cid=\"n108\" mdtype=\"paragraph\" class=\"md-end-block md-p\"><span md-inline=\"plain\" class=\"md-plain\">ECC :<\/span><span md-inline=\"softbreak\" class=\"md-softbreak\"> <\/span><span md-inline=\"plain\" class=\"md-plain\">1985\ub144 \ubbf8\uad6d \uc6cc\uc2f1\ud134 \ub300\ud559\uad50\uc758 \uc218\ud559 \uad50\uc218\uc778 \ub2d0 \ucf54\ube14\ub9ac\uce20(Neal Koblitz)\uc640 IBM \uc5f0\uad6c\uc18c\uc758 \ube45\ud130 \ubc00\ub7ec(Victor Miller)\uac00 \uac70\uc758 \ub3d9\uc2dc\uc5d0 \ub3c5\ub9bd\uc801\uc73c\ub85c \ub3c4\ucd9c\ud55c \uacf5\uac1c\ud0a4 \ud615\uc2dd\uc758 \uc554\ud638\ud654 \ubc29\uc2dd\uc774\ub2e4. \ud0c0\uc6d0\uace1\uc120\uc774\ub77c\uace0\ub3c4 \ubd88\ub9ac\ub294 \uc218\uc2dd\uc5d0 \uc758\ud574 \uc815\uc758\ub418\ub294 \ud2b9\uc218 \uac00\uc0b0\ubc95\uc744 \uae30\ubc18\uc73c\ub85c \uc554\ud638\ud654\uc640 \ubcf5\ud638\ud654\ub97c \uc218\ud589\ud558\ub294 \uc554\ud638\ud654 \ubc29\uc2dd\uc774\ub2e4. \ud0c0\uc6d0\uace1\uc120 \uad70\uc758 \uc5f0\uc0b0\uc5d0\uc11c \uc815\uc758\ub418\ub294 \uc774\uc0b0\ub300\uc218 \ubb38\uc81c\uc758 \uc5b4\ub824\uc6c0\uc758 \uc774\uc6a9\uc744 \uae30\ucd08\ub85c \ud558\ub294 \uacf5\uac1c\ud0a4 \uc554\ud638 \uc54c\uace0\ub9ac\uc998 \uc2dc\uc2a4\ud15c\uc73c\ub85c\uc11c RSA\/DSA\uc640 \uac19\uc740 \uacf5\uac1c\ud0a4 \uc554\ud638\ubcf4\ub2e4 \uc9e7\uc740 \ud0a4 \uae38\uc774\uc640 \ube60\ub978 \uc5f0\uc0b0\uc18d\ub3c4\ub97c \uac00\uc9c0\uba74\uc11c \ub3d9\uc77c\ud55c \uc218\uc900\uc758 \ubcf4\uc548 \uac15\ub3c4\ub97c \uc81c\uacf5\ud558\ub294 \uc554\ud638 \uc54c\uace0\ub9ac\uc998\uc774\ub2e4. \uc774\uc640 \uac19\uc740 \ubc29\uc2dd\uc73c\ub85c \ub9cc\ub4e0 \uc554\ud638\ub97c \ud574\ub3c5\ud558\ub294 \ubc29\ubc95\uc740 \uc544\uc9c1 \ubc1c\uacac\ub418\uc9c0 \uc54a\uc558\ub2e4. \ub2e4\ub9cc, \uc77c\ubd80 \uace1\uc120\uc5d0\uc11c\ub294 \uc57d\uc810\uc774 \ubc1c\uacac\ub418\uc5b4 \uc2e4\uc81c \uc774 \ubc29\uc2dd\uc744 \uc801\uc6a9\ud558\ub824\uba74 \uc774\uac83\uc744 \ud53c\ud560 \uc5f0\uad6c\uac00 \ud544\uc694\ud558\ub2e4. \uc9e7\uc740 \ud0a4 \uc0ac\uc774\uc988\ub85c \ub192\uc740 \uc548\uc804\uc131\uc774 \ubcf4\uc7a5\ub418\uace0, \ub610 \uc11c\uba85\ud560 \ub54c\uc758 \uacc4\uc0b0\uc744 \ube60\ub974\uac8c \ud560 \uc218 \uc788\ub294\uac83\uc774 \ud2b9\uc9d5\uc774\ub2e4. \uc2a4\ub9c8\ud2b8\uce74\ub4dc(IC\uce74\ub4dc) \ub4f1 \uc815\ubcf4\ucc98\ub9ac \ub2a5\ub825\uc774 \uadf8\ub2e4\uc9c0 \ub192\uc9c0 \uc54a\uc740 \uae30\uae30\uc5d0 \uc774\uc6a9\ud558\uae30\uc5d0 \uc801\ud569\ud55c \uc554\ud638\ud654 \ubc29\uc2dd\uc774\ub2e4<\/span><\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Encryption\/Decryption \uc544\uc9c1 \uc554\ud638\ud654\ub418\uc9c0 \uc54a\uc740 \uba54\uc2dc\uc9c0\ub97c \ud3c9\ubb38(plaintext)\uc774\ub77c\ud55c\ub2e4. \uc554\ud638\ud654 \ub41c \uba54\uc2dc\uc9c0\ub294 \uc554\ud638\ubb38(ciphertext)\ub77c\uace0 \ud55c\ub2e4. \ud3c9\ubb38\uacfc \uc554\ud638\ubb38 \uc0ac\uc774\uc5d0\uc11c\ub294 \ub450\uac1c\uc758 \uae30\ub2a5\uc774 \uc874\uc7ac\ud55c\ub2e4. \ubc14\ub85c \uc554\ud638\ud654\uc640 \ubcf5\ud638\ud654\ub2e4. \uc554\ud638\ud654(Encryption)\ub294 \ud3c9\ubb38\uc744 \uc5b4\ub5a4 \uc554\ud638\ud654 \ud568\uc218\ub97c \ud1b5\ud574 \uc554\ud638\ubb38\uc73c\ub85c \ubc14\uafb8\ub294 \uac83\uc744 \ub9d0\ud55c\ub2e4. \ubcf5\ud638\ud654(Decryption)\uc740 \uc554\ud638\ubb38\uc744 \uc5b4\ub5a4 \ubcf5\ud638\ud654 \ud568\uc218\ub97c \ud1b5\ud574 \ud3c9\ubb38\uc73c\ub85c \ubc14\uafb8\ub294 \uac83\uc744 \ub9d0\ud55c\ub2e4. \uc554\ud638\uc758 \uc791\ub3d9\ubc29\uc2dd \uc554\ud638\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ub450\uac1c\uc758 \uc8fc\ub41c \uad6c\uc131\uc694\uc18c\ub85c \uc774\ub8e8\uc5b4\uc9c4\ub2e4. \uce58\ud658(permutation) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[16],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45425"}],"collection":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=45425"}],"version-history":[{"count":1,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45425\/revisions"}],"predecessor-version":[{"id":45426,"href":"https:\/\/charlezz.com\/index.php?rest_route=\/wp\/v2\/posts\/45425\/revisions\/45426"}],"wp:attachment":[{"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=45425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=45425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/charlezz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=45425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}