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Posted By

gdonald on 09/27/06

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Last Edited at 09/27/06 11:33am

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PHP poor man's crypt

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  1. function encrypt( $string )
  2. {
  3.   $key = 'BXcfTYewQ';
  4.   $result = '';
  5.   for( $i = 1; $i <= strlen( $string ); $i++ )
  6.   {
  7.     $char = substr( $string, $i - 1, 1 );
  8.     $keychar = substr( $key, ( $i % strlen( $key ) ) - 1, 1 );
  9.     $char = chr( ord( $char ) + ord( $keychar ) );
  10.     $result .= $char;
  11.   }
  12.   return $result;
  13. }
  14.  
  15. function decrypt( $string )
  16. {
  17.   $key = 'BXcfTYewQ';
  18.   $result = '';
  19.   for( $i = 1; $i <= strlen( $string ); $i++ )
  20.   {
  21.     $char = substr( $string, $i - 1, 1 );
  22.     $keychar = substr( $key, ( $i % strlen( $key ) ) - 1, 1);
  23.     $char = chr( ord( $char ) - ord( $keychar ) );
  24.     $result .= $char;
  25.   }
  26.   return $result;
  27. }

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