{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-05-26T00:16:20.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-05-26T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":1500,"title":"Kryptos - CIA Cypher Sculpture: Vignere Decryption","description":"The \u003chttp://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture\u003e contains four encypted messages.\r\n\r\nThis Challenge is to Decrypt two of the original messages from the sculpture.\r\n\r\nThe method employed is \u003chttp://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher Vigenere Decryption\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\r\n\r\nOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\r\n\r\nFor coding purposes spaces and punctuation are removed, except \"?\".\r\n\r\nDecode Phrase: EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\r\n\r\n\r\n\r\n*Input:* Decode Phrase, Vigenere alphabet word, Vigenere shift word\r\n\r\nVigenere alphabet word ='KRYPTOS';\r\n\r\nVigenere shift word ='PALIMPSEST';\r\n\r\n*Output:* BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\r\n\r\nThe decryption matrix for this case:\r\n\r\n  KRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  ABCDEFGHIJLMNQUVWXZKRYPTOS\r\n  LMNQUVWXZKRYPTOSABCDEFGHIJ\r\n  IJLMNQUVWXZKRYPTOSABCDEFGH\r\n  MNQUVWXZKRYPTOSABCDEFGHIJL\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  EFGHIJLMNQUVWXZKRYPTOSABCD\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  TOSABCDEFGHIJLMNQUVWXZKRYP\r\n\r\nFollow Up Challenges:\r\n\r\n1) \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1499-kryptos-cia-cypher-sculpture-vigenere-encryption Vigenere Encryption\u003e\r\n\r\n2) Dictionary search\r\n\r\n3) KRYPTOS Part IV\r\n\r\n\u003chttp://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1 KRYPTOS Solutions\u003e","description_html":"\u003cp\u003eThe \u003ca href = \"http://en.wikipedia.org/wiki/Kryptos\"\u003eKryptos Sculpture\u003c/a\u003e contains four encypted messages.\u003c/p\u003e\u003cp\u003eThis Challenge is to Decrypt two of the original messages from the sculpture.\u003c/p\u003e\u003cp\u003eThe method employed is \u003ca href = \"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\"\u003eVigenere Decryption\u003c/a\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/p\u003e\u003cp\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/p\u003e\u003cp\u003eFor coding purposes spaces and punctuation are removed, except \"?\".\u003c/p\u003e\u003cp\u003eDecode Phrase: EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/p\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e Decode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/p\u003e\u003cp\u003eVigenere alphabet word ='KRYPTOS';\u003c/p\u003e\u003cp\u003eVigenere shift word ='PALIMPSEST';\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/p\u003e\u003cp\u003eThe decryption matrix for this case:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eKRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ePTOSABCDEFGHIJLMNQUVWXZKRY\r\nABCDEFGHIJLMNQUVWXZKRYPTOS\r\nLMNQUVWXZKRYPTOSABCDEFGHIJ\r\nIJLMNQUVWXZKRYPTOSABCDEFGH\r\nMNQUVWXZKRYPTOSABCDEFGHIJL\r\nPTOSABCDEFGHIJLMNQUVWXZKRY\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nEFGHIJLMNQUVWXZKRYPTOSABCD\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nTOSABCDEFGHIJLMNQUVWXZKRYP\r\n\u003c/pre\u003e\u003cp\u003eFollow Up Challenges:\u003c/p\u003e\u003cp\u003e1) \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1499-kryptos-cia-cypher-sculpture-vigenere-encryption\"\u003eVigenere Encryption\u003c/a\u003e\u003c/p\u003e\u003cp\u003e2) Dictionary search\u003c/p\u003e\u003cp\u003e3) KRYPTOS Part IV\u003c/p\u003e\u003cp\u003e\u003ca href = \"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\"\u003eKRYPTOS Solutions\u003c/a\u003e\u003c/p\u003e","function_template":"function decoded=decode_vigenere(phrase,word1,word2)\r\n decoded=phrase;\r\nend","test_suite":"phrase=upper('Between subtle shading and the absence of light lies the nuance of iqlusion.');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD';\r\nword1='KRYPTOS';\r\nword2='PALIMPSEST';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))\r\n\r\n%%\r\nphrase=upper('It was totally invisible Hows that possible? They used the Earths magnetic field X The information was gathered and transmitted undergruund to an unknown location X Does Langley know about this? They should Its buried out there somewhere X Who knows the exact location? Only WW This was his last message X Thirty eight degrees fifty seven minutes six point five seconds north Seventy seven degrees eight minutes forty four seconds west ID by rows');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='VFPJUDEEHZWETZYVGWHKKQETGFQJNCEGGWHKK?DQMCPFQZDQMMIAGPFXHQRLGTIMVMZJANQLVKQEDAGDVFRPJUNGEUNAQZGZLECGYUXUEENJTBJLBQCRTBJDFHRRYIZETKZEMVDUFKSJHKFWHKUWQLSZFTIHHDDDUVH?DWKBFUFPWNTDFIYCUQZEREEVLDKFEZMOQQJLTTUGSYQPFEUNLAVIDXFLGGTEZ?FKZBSFDQVGOGIPUFXHHDRKFFHQNTGPUAECNUVPDJMQCLQUMUNEDFQELZZVRRGKFFVOEEXBDMVPNFQXEZLGREDNQFMPNZGLFLPMRJQYALMGNUVPDXVKPDQUMEBEDMHDAFMJGZNUPLGEWJLLAETG';\r\n\r\nword1='KRYPTOS';\r\nword2='ABSCISSA';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))\r\n\r\n%%\r\nphrase=upper('The fox jumped over the moon');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='VUIPFSBYVQMMWPIMEVPZCVK';\r\nword1='KRYPTOS';\r\nword2='MATLAB';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))\r\n\r\n%%\r\nphrase=upper('Between the Devil and the deep blue sea');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='SENMEDWTZNDDFIBLNNCHVTEDIBBCEZOA';\r\nword1='AWEIGH';\r\nword2='MATLAB';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":62,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":28,"created_at":"2013-05-11T22:20:55.000Z","updated_at":"2026-05-06T03:52:07.000Z","published_at":"2013-05-11T22:27:10.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Kryptos\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKryptos Sculpture\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e contains four encypted messages.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThis Challenge is to Decrypt two of the original messages from the sculpture.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe method employed is\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Decryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e. One clarification is that \\\"?\\\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFor coding purposes spaces and punctuation are removed, except \\\"?\\\".\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eDecode Phrase: EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e Decode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere alphabet word ='KRYPTOS';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere shift word ='PALIMPSEST';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe decryption matrix for this case:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[KRYPTOSABCDEFGHIJLMNQUVWXZ\\n\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nABCDEFGHIJLMNQUVWXZKRYPTOS\\nLMNQUVWXZKRYPTOSABCDEFGHIJ\\nIJLMNQUVWXZKRYPTOSABCDEFGH\\nMNQUVWXZKRYPTOSABCDEFGHIJL\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nEFGHIJLMNQUVWXZKRYPTOSABCD\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nTOSABCDEFGHIJLMNQUVWXZKRYP]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFollow Up Challenges:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e1)\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1499-kryptos-cia-cypher-sculpture-vigenere-encryption\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Encryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e2) Dictionary search\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e3) KRYPTOS Part IV\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:hyperlink w:docLocation=\\\"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKRYPTOS Solutions\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":1499,"title":"Kryptos - CIA Cypher Sculpture: Vigenere Encryption","description":"The \u003chttp://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture\u003e contains four encypted messages.\r\n\r\nThis Challenge is to Encrypt two of the original messages for the sculptor.\r\n\r\nThe method employed is \u003chttp://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher Vigenere Encryption\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\r\n\r\nOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\r\n\r\nFor coding purposes spaces and punctuation are removed, except \"?\".\r\n\r\nPhrase to encode: BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\r\n\r\n*Input:* Encode Phrase, Vigenere alphabet word, Vigenere shift word\r\n\r\nVigenere alphabet word ='KRYPTOS';\r\n\r\nVigenere shift word ='PALIMPSEST';\r\n\r\n*Output:* EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\r\n\r\nThe encryption matrix for this case:\r\n\r\n  KRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  ABCDEFGHIJLMNQUVWXZKRYPTOS\r\n  LMNQUVWXZKRYPTOSABCDEFGHIJ\r\n  IJLMNQUVWXZKRYPTOSABCDEFGH\r\n  MNQUVWXZKRYPTOSABCDEFGHIJL\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  EFGHIJLMNQUVWXZKRYPTOSABCD\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  TOSABCDEFGHIJLMNQUVWXZKRYP\r\n\r\nFollow Up Challenges:\r\n\r\n1) \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1500-kryptos-cia-cypher-sculpture-vignere-decryption Vigenere Decryption\u003e\r\n\r\n2) Dictionary search\r\n\r\n3) KRYPTOS Part IV\r\n\r\n\u003chttp://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1 KRYPTOS Solutions\u003e\r\n\r\n  \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n","description_html":"\u003cp\u003eThe \u003ca href = \"http://en.wikipedia.org/wiki/Kryptos\"\u003eKryptos Sculpture\u003c/a\u003e contains four encypted messages.\u003c/p\u003e\u003cp\u003eThis Challenge is to Encrypt two of the original messages for the sculptor.\u003c/p\u003e\u003cp\u003eThe method employed is \u003ca href = \"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\"\u003eVigenere Encryption\u003c/a\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/p\u003e\u003cp\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/p\u003e\u003cp\u003eFor coding purposes spaces and punctuation are removed, except \"?\".\u003c/p\u003e\u003cp\u003ePhrase to encode: BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/p\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e Encode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/p\u003e\u003cp\u003eVigenere alphabet word ='KRYPTOS';\u003c/p\u003e\u003cp\u003eVigenere shift word ='PALIMPSEST';\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/p\u003e\u003cp\u003eThe encryption matrix for this case:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eKRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ePTOSABCDEFGHIJLMNQUVWXZKRY\r\nABCDEFGHIJLMNQUVWXZKRYPTOS\r\nLMNQUVWXZKRYPTOSABCDEFGHIJ\r\nIJLMNQUVWXZKRYPTOSABCDEFGH\r\nMNQUVWXZKRYPTOSABCDEFGHIJL\r\nPTOSABCDEFGHIJLMNQUVWXZKRY\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nEFGHIJLMNQUVWXZKRYPTOSABCD\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nTOSABCDEFGHIJLMNQUVWXZKRYP\r\n\u003c/pre\u003e\u003cp\u003eFollow Up Challenges:\u003c/p\u003e\u003cp\u003e1) \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1500-kryptos-cia-cypher-sculpture-vignere-decryption\"\u003eVigenere Decryption\u003c/a\u003e\u003c/p\u003e\u003cp\u003e2) Dictionary search\u003c/p\u003e\u003cp\u003e3) KRYPTOS Part IV\u003c/p\u003e\u003cp\u003e\u003ca href = \"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\"\u003eKRYPTOS Solutions\u003c/a\u003e\u003c/p\u003e","function_template":"function encoded=encode_vigenere(phrase,word1,word2)\r\n encoded=phrase;\r\nend","test_suite":"phrase=upper('Between subtle shading and the absence of light lies the nuance of iqlusion.');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nencoded_exp='EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD';\r\nword1='KRYPTOS';\r\nword2='PALIMPSEST';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n%%\r\n\r\nphrase=upper('It was totally invisible Hows that possible? They used the Earths magnetic field X The information was gathered and transmitted undergruund to an unknown location X Does Langley know about this? They should Its buried out there somewhere X Who knows the exact location? Only WW This was his last message X Thirty eight degrees fifty seven minutes six point five seconds north Seventy seven degrees eight minutes forty four seconds west ID by rows');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\n\r\nencoded_exp='VFPJUDEEHZWETZYVGWHKKQETGFQJNCEGGWHKK?DQMCPFQZDQMMIAGPFXHQRLGTIMVMZJANQLVKQEDAGDVFRPJUNGEUNAQZGZLECGYUXUEENJTBJLBQCRTBJDFHRRYIZETKZEMVDUFKSJHKFWHKUWQLSZFTIHHDDDUVH?DWKBFUFPWNTDFIYCUQZEREEVLDKFEZMOQQJLTTUGSYQPFEUNLAVIDXFLGGTEZ?FKZBSFDQVGOGIPUFXHHDRKFFHQNTGPUAECNUVPDJMQCLQUMUNEDFQELZZVRRGKFFVOEEXBDMVPNFQXEZLGREDNQFMPNZGLFLPMRJQYALMGNUVPDXVKPDQUMEBEDMHDAFMJGZNUPLGEWJLLAETG';\r\n\r\nword1='KRYPTOS';\r\nword2='ABSCISSA';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n%%\r\nphrase=upper('The fox jumped over the moon');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nencoded_exp='VUIPFSBYVQMMWPIMEVPZCVK';\r\nword1='KRYPTOS';\r\nword2='MATLAB';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n\r\n%%\r\nphrase=upper('Between the Devil and the deep blue sea');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\n\r\nword1='AWEIGH';\r\nword2='MATLAB';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\nencoded_exp='SENMEDWTZNDDFIBLNNCHVTEDIBBCEZOA';\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n\r\n\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":5,"comments_count":3,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":63,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":28,"created_at":"2013-05-11T20:36:34.000Z","updated_at":"2026-05-06T03:50:59.000Z","published_at":"2013-05-11T21:19:07.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Kryptos\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKryptos Sculpture\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e contains four encypted messages.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThis Challenge is to Encrypt two of the original messages for the sculptor.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe method employed is\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Encryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e. One clarification is that \\\"?\\\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFor coding purposes spaces and punctuation are removed, except \\\"?\\\".\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003ePhrase to encode: BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e Encode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere alphabet word ='KRYPTOS';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere shift word ='PALIMPSEST';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe encryption matrix for this case:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[KRYPTOSABCDEFGHIJLMNQUVWXZ\\n\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nABCDEFGHIJLMNQUVWXZKRYPTOS\\nLMNQUVWXZKRYPTOSABCDEFGHIJ\\nIJLMNQUVWXZKRYPTOSABCDEFGH\\nMNQUVWXZKRYPTOSABCDEFGHIJL\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nEFGHIJLMNQUVWXZKRYPTOSABCD\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nTOSABCDEFGHIJLMNQUVWXZKRYP]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFollow Up Challenges:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e1)\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1500-kryptos-cia-cypher-sculpture-vignere-decryption\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Decryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e2) Dictionary search\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e3) KRYPTOS Part IV\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:hyperlink w:docLocation=\\\"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKRYPTOS Solutions\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"problem_search":{"problems":[{"id":1500,"title":"Kryptos - CIA Cypher Sculpture: Vignere Decryption","description":"The \u003chttp://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture\u003e contains four encypted messages.\r\n\r\nThis Challenge is to Decrypt two of the original messages from the sculpture.\r\n\r\nThe method employed is \u003chttp://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher Vigenere Decryption\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\r\n\r\nOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\r\n\r\nFor coding purposes spaces and punctuation are removed, except \"?\".\r\n\r\nDecode Phrase: EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\r\n\r\n\r\n\r\n*Input:* Decode Phrase, Vigenere alphabet word, Vigenere shift word\r\n\r\nVigenere alphabet word ='KRYPTOS';\r\n\r\nVigenere shift word ='PALIMPSEST';\r\n\r\n*Output:* BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\r\n\r\nThe decryption matrix for this case:\r\n\r\n  KRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  ABCDEFGHIJLMNQUVWXZKRYPTOS\r\n  LMNQUVWXZKRYPTOSABCDEFGHIJ\r\n  IJLMNQUVWXZKRYPTOSABCDEFGH\r\n  MNQUVWXZKRYPTOSABCDEFGHIJL\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  EFGHIJLMNQUVWXZKRYPTOSABCD\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  TOSABCDEFGHIJLMNQUVWXZKRYP\r\n\r\nFollow Up Challenges:\r\n\r\n1) \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1499-kryptos-cia-cypher-sculpture-vigenere-encryption Vigenere Encryption\u003e\r\n\r\n2) Dictionary search\r\n\r\n3) KRYPTOS Part IV\r\n\r\n\u003chttp://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1 KRYPTOS Solutions\u003e","description_html":"\u003cp\u003eThe \u003ca href = \"http://en.wikipedia.org/wiki/Kryptos\"\u003eKryptos Sculpture\u003c/a\u003e contains four encypted messages.\u003c/p\u003e\u003cp\u003eThis Challenge is to Decrypt two of the original messages from the sculpture.\u003c/p\u003e\u003cp\u003eThe method employed is \u003ca href = \"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\"\u003eVigenere Decryption\u003c/a\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/p\u003e\u003cp\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/p\u003e\u003cp\u003eFor coding purposes spaces and punctuation are removed, except \"?\".\u003c/p\u003e\u003cp\u003eDecode Phrase: EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/p\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e Decode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/p\u003e\u003cp\u003eVigenere alphabet word ='KRYPTOS';\u003c/p\u003e\u003cp\u003eVigenere shift word ='PALIMPSEST';\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/p\u003e\u003cp\u003eThe decryption matrix for this case:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eKRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ePTOSABCDEFGHIJLMNQUVWXZKRY\r\nABCDEFGHIJLMNQUVWXZKRYPTOS\r\nLMNQUVWXZKRYPTOSABCDEFGHIJ\r\nIJLMNQUVWXZKRYPTOSABCDEFGH\r\nMNQUVWXZKRYPTOSABCDEFGHIJL\r\nPTOSABCDEFGHIJLMNQUVWXZKRY\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nEFGHIJLMNQUVWXZKRYPTOSABCD\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nTOSABCDEFGHIJLMNQUVWXZKRYP\r\n\u003c/pre\u003e\u003cp\u003eFollow Up Challenges:\u003c/p\u003e\u003cp\u003e1) \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1499-kryptos-cia-cypher-sculpture-vigenere-encryption\"\u003eVigenere Encryption\u003c/a\u003e\u003c/p\u003e\u003cp\u003e2) Dictionary search\u003c/p\u003e\u003cp\u003e3) KRYPTOS Part IV\u003c/p\u003e\u003cp\u003e\u003ca href = \"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\"\u003eKRYPTOS Solutions\u003c/a\u003e\u003c/p\u003e","function_template":"function decoded=decode_vigenere(phrase,word1,word2)\r\n decoded=phrase;\r\nend","test_suite":"phrase=upper('Between subtle shading and the absence of light lies the nuance of iqlusion.');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD';\r\nword1='KRYPTOS';\r\nword2='PALIMPSEST';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))\r\n\r\n%%\r\nphrase=upper('It was totally invisible Hows that possible? They used the Earths magnetic field X The information was gathered and transmitted undergruund to an unknown location X Does Langley know about this? They should Its buried out there somewhere X Who knows the exact location? Only WW This was his last message X Thirty eight degrees fifty seven minutes six point five seconds north Seventy seven degrees eight minutes forty four seconds west ID by rows');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='VFPJUDEEHZWETZYVGWHKKQETGFQJNCEGGWHKK?DQMCPFQZDQMMIAGPFXHQRLGTIMVMZJANQLVKQEDAGDVFRPJUNGEUNAQZGZLECGYUXUEENJTBJLBQCRTBJDFHRRYIZETKZEMVDUFKSJHKFWHKUWQLSZFTIHHDDDUVH?DWKBFUFPWNTDFIYCUQZEREEVLDKFEZMOQQJLTTUGSYQPFEUNLAVIDXFLGGTEZ?FKZBSFDQVGOGIPUFXHHDRKFFHQNTGPUAECNUVPDJMQCLQUMUNEDFQELZZVRRGKFFVOEEXBDMVPNFQXEZLGREDNQFMPNZGLFLPMRJQYALMGNUVPDXVKPDQUMEBEDMHDAFMJGZNUPLGEWJLLAETG';\r\n\r\nword1='KRYPTOS';\r\nword2='ABSCISSA';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))\r\n\r\n%%\r\nphrase=upper('The fox jumped over the moon');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='VUIPFSBYVQMMWPIMEVPZCVK';\r\nword1='KRYPTOS';\r\nword2='MATLAB';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))\r\n\r\n%%\r\nphrase=upper('Between the Devil and the deep blue sea');\r\ndecoded_exp=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nphrase_encoded='SENMEDWTZNDDFIBLNNCHVTEDIBBCEZOA';\r\nword1='AWEIGH';\r\nword2='MATLAB';\r\ndecoded= decode_vigenere(phrase_encoded,word1,word2);\r\n\r\nassert(strcmp(decoded_exp,decoded))","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":62,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":28,"created_at":"2013-05-11T22:20:55.000Z","updated_at":"2026-05-06T03:52:07.000Z","published_at":"2013-05-11T22:27:10.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Kryptos\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKryptos Sculpture\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e contains four encypted messages.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThis Challenge is to Decrypt two of the original messages from the sculpture.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe method employed is\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Decryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e. One clarification is that \\\"?\\\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFor coding purposes spaces and punctuation are removed, except \\\"?\\\".\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eDecode Phrase: EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e Decode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere alphabet word ='KRYPTOS';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere shift word ='PALIMPSEST';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe decryption matrix for this case:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[KRYPTOSABCDEFGHIJLMNQUVWXZ\\n\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nABCDEFGHIJLMNQUVWXZKRYPTOS\\nLMNQUVWXZKRYPTOSABCDEFGHIJ\\nIJLMNQUVWXZKRYPTOSABCDEFGH\\nMNQUVWXZKRYPTOSABCDEFGHIJL\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nEFGHIJLMNQUVWXZKRYPTOSABCD\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nTOSABCDEFGHIJLMNQUVWXZKRYP]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFollow Up Challenges:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e1)\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1499-kryptos-cia-cypher-sculpture-vigenere-encryption\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Encryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e2) Dictionary search\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e3) KRYPTOS Part IV\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:hyperlink w:docLocation=\\\"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKRYPTOS Solutions\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":1499,"title":"Kryptos - CIA Cypher Sculpture: Vigenere Encryption","description":"The \u003chttp://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture\u003e contains four encypted messages.\r\n\r\nThis Challenge is to Encrypt two of the original messages for the sculptor.\r\n\r\nThe method employed is \u003chttp://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher Vigenere Encryption\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\r\n\r\nOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\r\n\r\nFor coding purposes spaces and punctuation are removed, except \"?\".\r\n\r\nPhrase to encode: BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\r\n\r\n*Input:* Encode Phrase, Vigenere alphabet word, Vigenere shift word\r\n\r\nVigenere alphabet word ='KRYPTOS';\r\n\r\nVigenere shift word ='PALIMPSEST';\r\n\r\n*Output:* EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\r\n\r\nThe encryption matrix for this case:\r\n\r\n  KRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  ABCDEFGHIJLMNQUVWXZKRYPTOS\r\n  LMNQUVWXZKRYPTOSABCDEFGHIJ\r\n  IJLMNQUVWXZKRYPTOSABCDEFGH\r\n  MNQUVWXZKRYPTOSABCDEFGHIJL\r\n  PTOSABCDEFGHIJLMNQUVWXZKRY\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  EFGHIJLMNQUVWXZKRYPTOSABCD\r\n  SABCDEFGHIJLMNQUVWXZKRYPTO\r\n  TOSABCDEFGHIJLMNQUVWXZKRYP\r\n\r\nFollow Up Challenges:\r\n\r\n1) \u003chttp://www.mathworks.com/matlabcentral/cody/problems/1500-kryptos-cia-cypher-sculpture-vignere-decryption Vigenere Decryption\u003e\r\n\r\n2) Dictionary search\r\n\r\n3) KRYPTOS Part IV\r\n\r\n\u003chttp://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1 KRYPTOS Solutions\u003e\r\n\r\n  \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n","description_html":"\u003cp\u003eThe \u003ca href = \"http://en.wikipedia.org/wiki/Kryptos\"\u003eKryptos Sculpture\u003c/a\u003e contains four encypted messages.\u003c/p\u003e\u003cp\u003eThis Challenge is to Encrypt two of the original messages for the sculptor.\u003c/p\u003e\u003cp\u003eThe method employed is \u003ca href = \"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\"\u003eVigenere Encryption\u003c/a\u003e. One clarification is that \"?\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/p\u003e\u003cp\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/p\u003e\u003cp\u003eFor coding purposes spaces and punctuation are removed, except \"?\".\u003c/p\u003e\u003cp\u003ePhrase to encode: BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/p\u003e\u003cp\u003e\u003cb\u003eInput:\u003c/b\u003e Encode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/p\u003e\u003cp\u003eVigenere alphabet word ='KRYPTOS';\u003c/p\u003e\u003cp\u003eVigenere shift word ='PALIMPSEST';\u003c/p\u003e\u003cp\u003e\u003cb\u003eOutput:\u003c/b\u003e EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/p\u003e\u003cp\u003eThe encryption matrix for this case:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eKRYPTOSABCDEFGHIJLMNQUVWXZ\r\n\u003c/pre\u003e\u003cpre class=\"language-matlab\"\u003ePTOSABCDEFGHIJLMNQUVWXZKRY\r\nABCDEFGHIJLMNQUVWXZKRYPTOS\r\nLMNQUVWXZKRYPTOSABCDEFGHIJ\r\nIJLMNQUVWXZKRYPTOSABCDEFGH\r\nMNQUVWXZKRYPTOSABCDEFGHIJL\r\nPTOSABCDEFGHIJLMNQUVWXZKRY\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nEFGHIJLMNQUVWXZKRYPTOSABCD\r\nSABCDEFGHIJLMNQUVWXZKRYPTO\r\nTOSABCDEFGHIJLMNQUVWXZKRYP\r\n\u003c/pre\u003e\u003cp\u003eFollow Up Challenges:\u003c/p\u003e\u003cp\u003e1) \u003ca href = \"http://www.mathworks.com/matlabcentral/cody/problems/1500-kryptos-cia-cypher-sculpture-vignere-decryption\"\u003eVigenere Decryption\u003c/a\u003e\u003c/p\u003e\u003cp\u003e2) Dictionary search\u003c/p\u003e\u003cp\u003e3) KRYPTOS Part IV\u003c/p\u003e\u003cp\u003e\u003ca href = \"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\"\u003eKRYPTOS Solutions\u003c/a\u003e\u003c/p\u003e","function_template":"function encoded=encode_vigenere(phrase,word1,word2)\r\n encoded=phrase;\r\nend","test_suite":"phrase=upper('Between subtle shading and the absence of light lies the nuance of iqlusion.');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nencoded_exp='EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD';\r\nword1='KRYPTOS';\r\nword2='PALIMPSEST';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n%%\r\n\r\nphrase=upper('It was totally invisible Hows that possible? They used the Earths magnetic field X The information was gathered and transmitted undergruund to an unknown location X Does Langley know about this? They should Its buried out there somewhere X Who knows the exact location? Only WW This was his last message X Thirty eight degrees fifty seven minutes six point five seconds north Seventy seven degrees eight minutes forty four seconds west ID by rows');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\n\r\nencoded_exp='VFPJUDEEHZWETZYVGWHKKQETGFQJNCEGGWHKK?DQMCPFQZDQMMIAGPFXHQRLGTIMVMZJANQLVKQEDAGDVFRPJUNGEUNAQZGZLECGYUXUEENJTBJLBQCRTBJDFHRRYIZETKZEMVDUFKSJHKFWHKUWQLSZFTIHHDDDUVH?DWKBFUFPWNTDFIYCUQZEREEVLDKFEZMOQQJLTTUGSYQPFEUNLAVIDXFLGGTEZ?FKZBSFDQVGOGIPUFXHHDRKFFHQNTGPUAECNUVPDJMQCLQUMUNEDFQELZZVRRGKFFVOEEXBDMVPNFQXEZLGREDNQFMPNZGLFLPMRJQYALMGNUVPDXVKPDQUMEBEDMHDAFMJGZNUPLGEWJLLAETG';\r\n\r\nword1='KRYPTOS';\r\nword2='ABSCISSA';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n%%\r\nphrase=upper('The fox jumped over the moon');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\nencoded_exp='VUIPFSBYVQMMWPIMEVPZCVK';\r\nword1='KRYPTOS';\r\nword2='MATLAB';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n\r\n%%\r\nphrase=upper('Between the Devil and the deep blue sea');\r\nphrase_encode=phrase(regexp(phrase,'[A-Z?]'));\r\n\r\n\r\nword1='AWEIGH';\r\nword2='MATLAB';\r\nencoded= encode_vigenere(phrase_encode,word1,word2);\r\nencoded_exp='SENMEDWTZNDDFIBLNNCHVTEDIBBCEZOA';\r\n\r\nassert(strcmp(encoded_exp,encoded))\r\n\r\n\r\n\r\n\r\n","published":true,"deleted":false,"likes_count":5,"comments_count":3,"created_by":3097,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":63,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":28,"created_at":"2013-05-11T20:36:34.000Z","updated_at":"2026-05-06T03:50:59.000Z","published_at":"2013-05-11T21:19:07.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\\n\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Kryptos\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKryptos Sculpture\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e contains four encypted messages.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThis Challenge is to Encrypt two of the original messages for the sculptor.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe method employed is\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://en.wikipedia.org/wiki/Vigen%C3%A8re_cipher\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Encryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003cw:r\u003e\u003cw:t\u003e. One clarification is that \\\"?\\\" are removed from the coding sequence and then re-inserted in the final encoded message.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eOriginal phrase: Between subtle shading and the absence of light lies the nuance of iqlusion.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFor coding purposes spaces and punctuation are removed, except \\\"?\\\".\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003ePhrase to encode: BETWEENSUBTLESHADINGANDTHEABSENCEOFLIGHTLIESTHENUANCEOFIQLUSION\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eInput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e Encode Phrase, Vigenere alphabet word, Vigenere shift word\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere alphabet word ='KRYPTOS';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere shift word ='PALIMPSEST';\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:b/\u003e\u003c/w:rPr\u003e\u003cw:t\u003eOutput:\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e EMUFPHZLRFAXYUSDJKZLDKRNSHGNFIVJYQTQUXQBQVYUVLLTREVJYQTMKYRDMFD\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe encryption matrix for this case:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[KRYPTOSABCDEFGHIJLMNQUVWXZ\\n\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nABCDEFGHIJLMNQUVWXZKRYPTOS\\nLMNQUVWXZKRYPTOSABCDEFGHIJ\\nIJLMNQUVWXZKRYPTOSABCDEFGH\\nMNQUVWXZKRYPTOSABCDEFGHIJL\\nPTOSABCDEFGHIJLMNQUVWXZKRY\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nEFGHIJLMNQUVWXZKRYPTOSABCD\\nSABCDEFGHIJLMNQUVWXZKRYPTO\\nTOSABCDEFGHIJLMNQUVWXZKRYP]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eFollow Up Challenges:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e1)\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"http://www.mathworks.com/matlabcentral/cody/problems/1500-kryptos-cia-cypher-sculpture-vignere-decryption\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eVigenere Decryption\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e2) Dictionary search\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e3) KRYPTOS Part IV\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:hyperlink w:docLocation=\\\"http://math.ucsd.edu/~crypto/Projects/KarlWang/index2.html#1\\\"\u003e\u003cw:r\u003e\u003cw:t\u003eKRYPTOS Solutions\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"errors":[],"facets":[[{"value":"Strings II","count":2,"selected":false}],[{"value":"hard","count":1,"selected":false},{"value":"medium","count":1,"selected":false}]],"term":"tag:\"cia\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}