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",[346,347,348],"code",{},"key"," keys the plain alphabet, ",[346,351,352],{},"secondKey"," the cipher one, and the indicator slides the second along the first. The ACA's example also hangs the indicator under plain S, so this is where ",[346,355,356],{},"indicatorUnder"," earns its keep.",[359,360,365],"pre",{"className":361,"code":362,"language":363,"meta":364,"style":364},"language-ts shiki shiki-themes ciphers ciphers ciphers","const quagmire = create(\"quagmire-4\");\nconst keys = { key: \"SENSORY\", secondKey: \"PERCEPTION\", indicator: \"EXTRA\", indicatorUnder: \"S\" };\nquagmire.encode(\"This one employs three keywords\", keys).text;\n\u002F\u002F \"Vbmr fcy ispmpbr rheic xrreigdx\"\n","ts","",[346,366,367,397,434,451],{"__ignoreMap":364},[368,369,372,376,380,383,387,390,394],"span",{"class":370,"line":371},"line",1,[368,373,375],{"class":374},"skH_V","const",[368,377,379],{"class":378},"s38Sx"," quagmire ",[368,381,382],{"class":374},"=",[368,384,386],{"class":385},"sK71F"," create",[368,388,389],{"class":378},"(",[368,391,393],{"class":392},"shU9J","\"quagmire-4\"",[368,395,396],{"class":378},");\n",[368,398,400,402,405,407,410,413,416,419,422,425,428,431],{"class":370,"line":399},2,[368,401,375],{"class":374},[368,403,404],{"class":378}," keys ",[368,406,382],{"class":374},[368,408,409],{"class":378}," { key: ",[368,411,412],{"class":392},"\"SENSORY\"",[368,414,415],{"class":378},", secondKey: ",[368,417,418],{"class":392},"\"PERCEPTION\"",[368,420,421],{"class":378},", indicator: ",[368,423,424],{"class":392},"\"EXTRA\"",[368,426,427],{"class":378},", indicatorUnder: ",[368,429,430],{"class":392},"\"S\"",[368,432,433],{"class":378}," };\n",[368,435,437,440,443,445,448],{"class":370,"line":436},3,[368,438,439],{"class":378},"quagmire.",[368,441,442],{"class":385},"encode",[368,444,389],{"class":378},[368,446,447],{"class":392},"\"This one employs three keywords\"",[368,449,450],{"class":378},", keys).text;\n",[368,452,454],{"class":370,"line":453},4,[368,455,457],{"class":456},"scIB-","\u002F\u002F \"Vbmr fcy ispmpbr rheic xrreigdx\"\n",[342,459,460,461,468,469,472,473,475,476,479],{},"That's the ",[462,463,467],"a",{"href":464,"rel":465},"https:\u002F\u002Fwww.cryptogram.org\u002Fdownloads\u002Faca.info\u002Fciphers\u002FQuagmireIV.pdf",[466],"nofollow","ACA's Quagmire IV",", ",[346,470,471],{},"VBMRF CYISP"," and on. Leave ",[346,474,356],{}," out and the same call starts ",[346,477,478],{},"Kcfw ixq",". Same keywords, other text. Did anything warn you? Nope.",[481,482,484],"h2",{"id":483},"why-is-it-the-hard-one","Why is it the hard one?",[342,486,487,488,493],{},"Nothing lines up anymore. Quagmire I and II keep one side straight, III uses the same alphabet twice. Here both sides are scrambled, each its own way. The columns still repeat, so ",[462,489,490],{"href":17},[346,491,492],{},"period"," still finds the indicator's length. After that you're rebuilding two alphabets at once. Bring tea.",[342,495,496,497,500,501,503],{},"Text, case and errors work as for ",[462,498,104],{"href":499},"\u002Fciphers\u002Fquagmire-1#the-rest-of-the-text",". 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One for the plain alphabet, one for the cipher alphabet and an indicator to slide one along the other.","md",null,{},true,{"title":116,"description":511},"VPdJ7VD1CmzIWobyL-S2x4UZav6ikMugspMlx9FJieo",[519,521],{"title":112,"path":113,"stem":114,"description":520,"children":-1},"One keyed alphabet on both sides of the tableau. The keyword renames the letters and the indicator slides them.",{"title":120,"path":121,"stem":122,"description":522,"children":-1},"Byrne's 1918 cipher. Two alphabets that shuffle themselves after every letter. Secret for 92 years. Now it fits on one page.",1791487534396]