vigenere cipher

[swaart]

Hello!

Please, I need help with following homework. I don´t know anything about any
programming in java. I have no one else to turn to. I apologize for my English.

Here is assignment e.g. by course of: //how-2-do.blogspot.com/2007/02/how-to-encode-decode-vigenre-cipher.html

Job is to write methods encryption and decryption by Vigenere cipher with given password. One method will do encryption given to open text, result will be ciphertext. And another method will do decryption given to ciphertext, result will be open text.

Expects implementation two methods, one’s for encryption and second for decryption, see screen code:

public class Vigenere {
public String cipher (String openText, String password) {
}
public String decipher (String cipherText, String password) {
}
}

Of course you can implement next, auxiliary, methods according to your discretion. On entry supposed only characters a-z, or correct entryies.

Verification rightness your solving you can carry out ourselves - if carry out encryption and resulting decryption, you must get same open text.

As far as possible, create a simplest code, please. Thank so much in advance.

[emceenugget]

have you done programming in any other language? what can't you actually do in java? half the people who say that they know nothing in java actually know a lot more than the lead on to know and for one reason or another do not want to say where they are going wrong. the other half actually don't know anything about java and need to seek out a tutorial to get the jump started so they can ask real questions that we can help.

here are a couple links. google is your friend.
Trail: Getting Started (The Java™ Tutorials)
Vigenère cipher - Wikipedia, the free encyclopedia

[Supamagier]

Please, I need help with following homework. I don´t know anything about any
programming in java.

You know nothing about Java but your homework is to write an en/decoder in Java? Make you mind up, pal.

[swaart]

Thanks, but I haven´t thought up it. It´s for school - I began studying informatics and computer engineering. I have tried to find by way of google but it hasn´t corresponded anything to assignment.

[CJSLMAN]

You mean that you googled "java vigenere" and you found nothing? Now... to do the assignment, you need to know how the Vigenere works...do you ?

Luck,
CJSL

[swaart]

Yes, I do...probably. But it doesn´t help me. My knowledge of programming is very tragical. I don´t know what to do at all.

[coolgirl]

doea anyone knows how to do encode and decode by vigener cipher?

[JosAH]

This article describes it all.

kind regards,

Jos