GEDEFU
RootMe challenge: June 2, 1918, he decrypts an important message to win the First World War.
1962, this strange morse message was revealed. Uncipher this message in order to understand how the Allies won the first World War.
The password is in UPPERCASE.
Ciphertext:
The morse code translates to:
GDGDAGFXXDVGAGXGXFGXGFVGVAXDVXAFAGXVGDDVVAAFAVGGAGGAXVDGDAAXAXGGAXAFAGFFAGFXAGDXGAFVGGGGAXXGDXDAAFDDFGAXADFGGXGFAXDXAVXVDXGXXDAXGGGFGFGDGGFGAXFFVGGFFXXGXGGXXXAVXXAFVFVGGGVDGDFFAXGDXGAXGGAVAAAFGFGFDXGVGFDFGXDFXGGGAFXDAXGGVFAVFFAGAXGXGFXXAGVDFFGXGXAGGDFFXAGXGVFFXAADXVAGXGAVVAAAGXAADGVXGXAAAFGAXFGFGXXFAVGVAGGGVXGGGXAFDVGGADXFAGGXAXGDGXGADFVGDFGVVDGXDVAFAXGDADDXDFDFXXGXGFFGVXVVVAAFDDGXGFGAGFXDGFFFXDVAAVFXAFGGXDFXGDDXVXGXAXXGGVVAGXGGFVAGXXAGAAAFAFGFAGGGAXVGAVGGAFXGXXAGGXDAAXADDXDGGVGXXVAAADDAXFXFGGGGGFAVAVXFADDGDFAXAVAVXGAVXFAXGGADXVDVVVAGAFGVDAGFXFAXFDXVAFGGAXXXAXAFAGAFFGGXDXAVAGDGXAGDXXXDFGDGXXVAAVAXVXGFAGGVAVAFAFGFAGADGFFADDDVDGGADFADGXFFDFGXGXAGXGGFFXXFAVAVGAADAGAXGXAAAGGVGFXGAFAXVXAXAADFDVAFDGXFXGDXADDAGGAVAXAGAFXDXFGXGGVGFAADXXXGXGGFGDAGGVAGGGVFAAAVGGGXGXXXAGDXGGAFAXAVAVGGGGAXGGGVFXGXVGGXGFXADXAGGXFGXFAGFXAXXXAFAVGVDFAFGFAGGFXGFADVGXGAGFVFGXADXFGFGXAGADGXADDXGFXDXVGGAGVXXGAXGFFVDVAXXXAXXXDFAFAXADXGDAAVAGFFDXXVGFGGVVXFXXAGXGGDVVDXVDGXGADGGFXFDXAVDFGFGGVAXFGFGXXVFXVGGXGAFVGGXFGGFXFGFAFXGGDFGGXGFAGGFDXAXAAAXXDAXXFAXGXGVGFGXAXAXGFGGGGGFFFDVAVXXDGAAAGAGAXAFAGXDGVDXADXGFGFFDGXDDGAXGVFGDGDFFFXXVAAFDVGFDVXADAAFVGAXADAGVXFXXGFGVXGFVVGFAVFGFVXVGDXVXXDXGFXVGFDAADDGAXAXGFVFGGXXGXXGVDXGXXVXXDGGGFAGXDGFFVAVAGGXAVFVXFVGAGADGXVDDXVGDFADGFFGDXAFAXXFGGGGVDFXAGAXDGGGAXVXAAAXVXGFXFFXAXGXAVGGGFDVGVXVFDFVAAADGFFXGGVXAGDFGGAFVXGGXXXGFXAXAXGXAGVGDFAXDFXGGGDXAFDGGVVFXAADDXAAXGGAAXDXVXAVGGGXFXXAGGGFFFXXVVFVAFAVGGFGAXAGADFXADDFXAGXXXXGDXXFAFFGXGGGAXFGAFXDGXAGFGAAFFGXFAGFAAGVAGFGXXAXAGDGVVDXGFVXXXAXAGXGFDXGGDGDAXXDFFGFAGGVGGXFAGXGDDDDGGDFGDAFXAAXAVXFAGAXAGAAXFGVXFFXDXDGGXGXXFAXFXXDGFXGVXDGGGGXGGXGAFVGFGXGGDAGDFXGAAXXAGAGGFAXXXFGAXFFXAAAXGVFVGDVXXGFAAVGXVXAVFVGFAFAGAFGXFFXVGFGVGVFFAAXFFDDXDDAAAGADAFDFVVGDXGAFDXDXAVGGVDDFXVAGGXAFAVXFXGXFVGXFGFGVGXDGXVAFGXAGFGAXVFXFVGDGFFAVVVAFGXAVXFXVAFGAAAAGVXADAVDXVFAFGXVFGXDXAVGDAGAGXDXFXGAXDGGXAXGXGXGFGDGAAXGGGXGXXDGXAFFVXGAGGDVFGFXXXVGVAXDXVGGFFAFXADXFFFAGAXAXGFAGGAADDXAXFXFVAFXXVVAXFXFVFFGAFGGXVXVGAXGXDGGFXXVFFFFVVAXFFAXVFAAFFADAXVFGXVXAVXAGFAGAFGDVGAVGFADGVGXGGAXGFAXGXAFXDDFFVFGXGFXXAGVGVAFDVXFAFDGVXGFAGGDGFFFDXXXGXADDVGFXGVFGXAXXXAXAXAXGFAXXXAGVDAADXXDGFFVGVGFDGDVGFXGDFAFAFFFDXAVGXXXGXGDGFXGGVAXADDXAFADAXDVFDAGADVAAXVDGGGVGXFVADFXGAAFXXADXGGGXFFGAXGVVFGXAXGAAXDGFFGFAVFFAVGFADXGFFDGGFGVFFGGVDXFAXXDVGADAVXFXFAVAXAGXGFVGDGXAX
Aha! An ADFGX Cipher, a two-stage cipher, polybius-square substitution followed by columnar transposition.