隠されたトークンあるいは暗号の解説 / Explanation of hidden tokens or cryptography

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root@6fc0eeab504a:/var/www/html# ls BHJDIO.php FXFUHSXQBBUDWUYDVE.php KZXUK.php V20xc2RWbFhkejA9.php YKIUTJ.p DHIBYR.php JABZNSLACRQR.php MYCOZHKDBKF.php

VTDIABLQFKZQK.php first.ph EVNNZ.php JBJYL.php OIWRXPRAU.php VTDKD.php fourth.p FRPBAQUVAG.php JMTNFN.php TMFAESTAQNAGKZXUFVODR.php VTDKDYGUUO.php index.ph

root@6fc0eeab504a:/var/www/html# ls BHJDIO.php FXFUHSXQBBUDWUYDVE.php KZXUK.php V20xc2RWbFhkejA9.php YKIUTJ.p DHIBYR.php JABZNSLACRQR.php MYCOZHKDBKF.php

<?php echo "以下を解読し解答してください。"; echo "VVZWR1dGZFZPVWRTVld4RQ=="; echo "be49dff024b9745dfcff21a11ac419be8e3ff906c403b0bd9156281119cfc4d9 7c82b7123b94faf8741492

<?php echo "以下を解読し解答してください。"; echo "VVZWR1dGZFZPVWRTVld4RQ=="; echo "be49dff024b9745dfcff21a11ac419be8e3ff906c403b0bd9156281119cfc4d9 7c82b7123b94faf874149

:/var/www/html# cd ~ :~# ls SKSHUFKDOOHQJH XMWTNCCFOHXS

:~# cd SKSHUFKDOOHQJH/ :~/SKSHUFKDOOHQJH# ls 1 2 3

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:~# cd SKSHUFKDOOHQJH/ :~/SKSHUFKDOOHQJH# ls 1 2 3

<?php const ALPHABETS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; function shift(string $cipher, int $diff):

string { $cipher_length = strlen($cipher); $plain = ""; for ($i = 0; $i < $cipher_length; $i++) { $next = strpos(ALPHABETS, $cipher[$i]) + $diff; if ($next >= 26) { $next -= 26; } $plain .= ALPHABETS[$next]; } return $plain; }

WKHUH DUH WZR WRNHQV LQ WRWDO

WKHUH DUH WZR WRNHQV LQ WRWDO XLIVI EVI XAS XSOIRW

MR XSXEP

function enumerate_candidates(string $cipher) { for ($i = 1; $i <

26; $i++) { $plain = shift($cipher, $i); echo str_pad($i, 2, 0, STR_PAD_LEFT) . "|" . $plain . PHP_EOL; } } for($i = 1; $i < count($argv); $i++) { $cipher = strtoupper($argv[$i]); echo "====================" . PHP_EOL; echo "TARGET:" . $cipher . PHP_EOL; echo "--------------------" . PHP_EOL; enumerate_candidates($cipher); echo "====================" . PHP_EOL; echo PHP_EOL; }

==================== TARGET:WKHUH -------------------- 01|XLIVI 02|YMJWJ 03|ZNKXK 04|AOLYL 05|BPMZM 06|CQNAN 07|DROBO

08|ESPCP 09|FTQDQ 10|GURER 11|HVSFS 12|IWTGT 13|JXUHU 14|KYVIV 15|LZWJW 16|MAXKX 17|NBYLY 18|OCZMZ 19|PDANA 20|QEBOB 21|RFCPC 22|SGDQD 23|THERE 24|UIFSF 25|VJGTG ==================== ==================== TARGET:DUH -------------------- 01|EVI 02|FWJ 03|GXK 04|HYL 05|IZM 06|JAN 07|KBO 08|LCP 09|MDQ 10|NER 11|OFS 12|PGT 13|QHU 14|RIV 15|SJW 16|TKX 17|ULY 18|VMZ 19|WNA 20|XOB 21|YPC 22|ZQD 23|ARE 24|BSF 25|CTG ==================== ==================== TARGET:WZR -------------------- 01|XAS 02|YBT 03|ZCU 04|ADV 05|BEW 06|CFX 07|DGY 08|EHZ 09|FIA 10|GJB 11|HKC 12|ILD 13|JME 14|KNF 15|LOG 16|MPH 17|NQI 18|ORJ 19|PSK 20|QTL 21|RUM 22|SVN 23|TWO 24|UXP 25|VYQ ==================== ==================== TARGET:WRNHQV -------------------- 01|XSOIRW 02|YTPJSX 03|ZUQKTY 04|AVRLUZ 05|BWSMVA 06|CXTNWB 07|DYUOXC 08|EZVPYD 09|FAWQZE 10|GBXRAF 11|HCYSBG 12|IDZTCH 13|JEAUDI 14|KFBVEJ 15|LGCWFK 16|MHDXGL 17|NIEYHM 18|OJFZIN 19|PKGAJO 20|QLHBKP 21|RMICLQ 22|SNJDMR 23|TOKENS 24|UPLFOT 25|VQMGPU ==================== ==================== TARGET:LQ -------------------- 01|MR 02|NS 03|OT 04|PU 05|QV 06|RW 07|SX 08|TY 09|UZ 10|VA 11|WB 12|XC 13|YD 14|ZE 15|AF 16|BG 17|CH 18|DI 19|EJ 20|FK 21|GL 22|HM 23|IN 24|JO 25|KP ==================== ==================== TARGET:WRWDO -------------------- 01|XSXEP 02|YTYFQ 03|ZUZGR 04|AVAHS 05|BWBIT 06|CXCJU 07|DYDKV 08|EZELW 09|FAFMX 10|GBGNY 11|HCHOZ 12|IDIPA 13|JEJQB 14|KFKRC 15|LGLSD 16|MHMTE 17|NINUF 18|OJOVG 19|PKPWH 20|QLQXI 21|RMRYJ 22|SNSZK 23|TOTAL 24|UPUBM 25|VQVCN ====================

==================== TARGET:WKHUH -------------------- 01|XLIVI 02|YMJWJ 03|ZNKXK 04|AOLYL 05|BPMZM 06|CQNAN 07|DROBO

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LUFYF ZAYKZ: #ZTOTWGLAFVXOEZU

==================== TARGET:LUFYF -------------------- 01|MVGZG 02|NWHAH 03|OXIBI 04|PYJCJ 05|QZKDK 06|RALEL 07|SBMFM

root@6fc0eeab504a:/var/www/html# ls BHJDIO.php FXFUHSXQBBUDWUYDVE.php KZXUK.php V20xc2RWbFhkejA9.php YKIUTJ.p DHIBYR.php JABZNSLACRQR.php MYCOZHKDBKF.php

==================== TARGET:FRPBAQUVAG -------------------- 01|GSQCBRVWBH 02|HTRDCSWXCI 03|IUSEDTXYDJ 04|JVTFEUYZEK 05|KWUGFVZAFL 06|LXVHGWABGM 07|MYWIHXBCHN

==================== TARGET:FRPBAQUVAG -------------------- 01|GSQCBRVWBH 02|HTRDCSWXCI 03|IUSEDTXYDJ 04|JVTFEUYZEK 05|KWUGFVZAFL 06|LXVHGWABGM 07|MYWIHXBCHN

<?php echo "PVCURE PBAPRVIRQ VA GUR YNGR SVSGRRAGU NAQ YNGR

FVKGRRAGU PRAGHEVRF."; echo "GUR FRPBAQ PVCURE VF N ERYNGVIR BS GUR SVEFG.";

<?php echo "PVCURE PBAPRVIRQ VA GUR YNGR SVSGRRAGU NAQ YNGR

FVKGRRAGU PRAGHEVRF."; echo "GUR FRPBAQ PVCURE VF N ERYNGVIR BS GUR SVEFG."; Cipher conceived in the late fifteenth and late sixteenth centuries. The second cipher is a relative of the first.

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