Security JavaScript DHTML

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  4. Vigenere encode and decode

  
    Vignere Cipher
    
  
  
    
      
    
      
        
          
            Input:

            
          
          
            
          
        
        
          
            Key:

            
          
          
            
          
        
        
          Coding direction:
          
            
            
          
        
          
            Output: