RC4 encryption/ decryption

[joe2014]

Hey guys,

So, I want to implement the RC4 encryption but everything I found online was not quite helpful. I don't understand how it works.

I have a string like s = "THIS IS A STRING" and a key k = "KEY". I found that I have to initialize an array from 0-255 and turn the key into ASCII or something like that. I get quite confused about the initialization. The guy I watched on YouTube he did an example but I got more confused.

Could anyone help me out? I just need the steps how to do it.

Thanks in advance.

[coder777]

Maybe this helps:

https://www.geeksforgeeks.org/rc4-encryption-algorithm/

[JRManx]

This may help as well, it has code examples but they are not in C++:
https://en.wikipedia.org/wiki/RC4

[George P]

https://sites.math.washington.edu/~nichifor/310_2008_Spring/Pres_RC4%20Encryption.pdf

[joe2014]

Thank you guys so so much!