Contoh Program Vigenere Cipher
How would I go about modifying this code to accept input from the user rather than using a predetermined string? Specifically, I need the program to require exactly two command line arguments. The first will either be the code '-e' or '-d' to indicate encoding or decoding of a message (this determines adding or subtracting you shift values) and the second parameter will be a single word that will be the keyword that you use for the encryption or decryption.
- Here you will get program for vigenere cipher in Java for both encryption and decryption. Vigenere Cipher is a polyalphabetic substitution technique that is used for encrypting and decrypting a message text.
- Tools to decrypt/encrypt with double transposition cipher, as its names indicates. Applet, snippet, software (converter, solver, encryption / decryption, encoding.
Update
Thanks to your input and a few other sources I have re-developed my main code as is shown below. I am having trouble getting the program to decrypt and encrypt strings properly and I am not sure if the error is somewhere in the code itself, or operator error. Brazilian jiu jitsu dvd torrent. Does anything look out of the ordinary here and how could I get this code functional to where it can encrypt or decrypt given user input?
Jul 05, 2013 Contoh Aplikasi Program Algoritma Kriptografi Vigenere Cipher dan Transposisi Menggunakan Matlab 7.4 Dengan GUI.
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2 Answers
Contoh Program Vigenere Cipher
If you want command line arguments, you'll need to change the prototype of your main function a little bit and use the standard argv array:
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Minimal effort made for a quick example, code probably works, e&oe, caveat emptor, etc.
Of course, you'd really be best off using a proper command line argument parser, like getopt, and you'll still need some way to supply the plaintext for encryption or ciphertext for decription, but that's left as an exercise for the reader. Reading from stdin by using std::cin is one way of doing so, for example.
Use cin to accept input from the user and input it into a string. Parse the string to obtain the -e/-d flags and the keyword. If the input is not what you want, prompt the user to try again.