Decrypting Text

ADFGVX cipher decryption

This cipher is obvious by the composition of its ciphertext - only 6 letters ADFGVX and it isn't easy to decipher. It uses a 6 * 6 grid of characters to substitute for the 26 letters and 10 numbers (optional) of the plaintext. The letters A D F G V X are used to create 36 double chars eg. AD AF VV FX and so forth.

By referring to this grid the plaintext is converted into a set of these characters giving a stage 1 ciphertext. This cipheretext is then transposed by using a keyword that is written in the first row of a new grid with the ciphertext arranged accordingly within. The columns of the grid are then arranged so that the keyword letters are now in alphabetic order which gives the final ciphertext

This program assumes that the ciphertext has already been transposed (use the transposition cipher to do this) and ready for the final letter substitution. You will also need to do a frequency analysis so that you have some ideas as to what letters to put in the grid.

Enter your ciphertext below:

xaagfv xaafag vadfdx xagxdf agdxdf xdxaxd vffvav axafag avaxdf fxxagf gfxaax dvdfxg dgavgf agdxdf xfavax agxafa axdfgf agavxd dfavga dfaxdf xgxaax xgagdx dfaffv xaxdgf dffxav gxdfxg vafaag dxxafv fvgaav afaffa xdfvdf xfxagf dfxaax xgaxav vafaag gfdfaf agafdv dfaxag fvvffa axxaax dfvaga xaxffg faaxdv xfgfxa agdfgf dfxaxg vfdgav gffaag affdav gvgfax dfvfag avaxdf vavfav gffgag avfafx gadfxg dfagdx dfxgfa afxfav gxdfgf vfavdg avgvgf xaxfag faavax vadfdx xagxdf gfdfga fvxaxf dfxgag dxdfxd xaxdvf fvavax afagav axdfva faagdx xaxfav fvfvdf xfagfa avaxav dggfav xffgaf xggfdf xgdvdf xgdggf avfxag dxdfxg avxffg affaxg dfdxdf gfdffa axafav gvagdx xafxga agavax vafaag dxfvgv xffgxd vfagdx dfagfa fxdfag dxfaaf xgdfgx faavgv afxgdf xfdfga agfaav axfaaf xgfaaf xfavgx dfgfdf xgvadf xaaxxg agdxdf afagav axdfva fafvfv xddfgf dfafag faaxdv dgxagf dggfav fxdxdf gfdfga xavffx dfaxag avdgxa fxdfgf xffadg gvfvfv vfaffx xafvfv xdgffa xddfaf dfxfgv gfdfxg agdxdf agdffx gaavgf xagfvf xgfaaf aggfxa xfagfa avaxav dgagdx dfaxfa dvdxag vaxaag xfdxfx dfaxdx dfgfdf faaxag dxdfxg avxffg afxaax xgagdx faafva xaafdf axavgv dvdxdg avgfgv afagav dvxafa axxaxf xfdfaf afagav agdxdf xdavax xgdfxg vaxagf dfdxav gvafdf vadxdf gfdffa axagdx dfxfgf xaagdf vaxaaf afagav gfdfxg vaavgf fgfaax dvvafa agdxxa affxxa fvfvag dfxafx avdggf avdvgv dfafgf dfxfgf gvfaag dfxgdg gfavfx fvavxf xafvag xagxdf gfaxaf vadfxf xagfgf fadfxg agdxdf xdxaxd vffvav axafag avaxdf agavxa axavag dxdfgf vaxagf dfdxav gvafdf vadxdf gfdffa agvaxa afgfdf gaxaxf fgxadv dfxgxa axxgfv xaxddf fvfvdf xgdgav gfavax vaxagf xgafdx fagafx dfaxag vadfdx xagxdf fdgvaf agdfax avgvdv dxfvdf dgagag avgaxa vfafag dfdfgf xadvdf xffvxa afafaf avagdx xaagva dffxxa vfaggf xagxdf fvagav dvdfag dxdfgf vafaag dxagdx dfafag avaxdf avaxag dxdffv xaafag afagxa dvdfav dgfaag affdav gvgfax dfvfva dfvafa fvfvxg dfgaxa gfagax dfvdag vadfdf fgfafx gvafag vagffa agdfag avfxvf affaaf agdfgf xddfdg avgfdf agdxdf axxaaf vadfdx xagxdf axavag fxdfag affaax xfdffa fvdfdg agdgav gfdfdv vfgaag xaaxxg faagfx xavfxd dfafav fxdfag fafxdf xddfdg avgfdf faxfxa axagdf fvfvdx dfgfav dgfxvf xaxggx dfaxag gvgfdf affaax gadfgf afavax

Enter your letters:

Note that the left column comes first followed by the row. DF is the name for the coloured cell.

	A	D	F	G	V	X
A
D
F
G
V
X