Playfair cipher: Difference between revisions
Content added Content deleted
m (→{{header|REXX}}: adjusted REXX program for the case of no arg before the ( not followed by a blank. -- ~~~~) |
(→{{header|REXX}}: added another error check (cipher key can't contain the OMIT character). -- ~~~~) |
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upper omit @abcU /*uppercase OMIT char & alphabet.*/ |
upper omit @abcU /*uppercase OMIT char & alphabet.*/ |
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if pos(omit,newText)\==0 then call err 'TEXT can''t contain the "OMIT" character: ' omit |
if pos(omit,newText)\==0 then call err 'TEXT can''t contain the "OMIT" character: ' omit |
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if pos(omit,newKey) \==0 then call err 'cipher key can''t contain the "OMIT" character: ' omit |
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fill=space(translate(@abcU,, omit), 0) /*elide OMIT char from alphabet. */ |
fill=space(translate(@abcU,, omit), 0) /*elide OMIT char from alphabet. */ |
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xx='X'; if omit==xx then xx='Q' /*char used for double characters*/ |
xx='X'; if omit==xx then xx='Q' /*char used for double characters*/ |
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