C program for Ceaser Cipher method

[ssss]

can anyone send me C program for Caesar Cipher model?


Thanks a lot in advance

[jonnin]

read the policy on homework and such.

This one is ultra simple, however, so I will get you started. The Caesar Cipher just shifts the same amount each time. Like, A becomes B, B becomes C, etc. if you shifted by 1 each time. Meanwhile the modulus operator, %, you should understand what this operator does, it will help.

so all you really need is to iterate over each character and shift it with a modulo.

For example:
shift = 3;
for(x = 0; x < all_the_characters; x++)
astring[x] = (astring[x]+shift) % 256; ///this one just wraps the ascii table. You can also use % to wrap within the printable characters if you prefer it.

Note that this is very, very poor encryption: a 10 year old can break the code in about 30 seconds. Consider something at least moderately difficult to solve, such as xor each byte with a random number from a known random number sequence.

[ssss]

Now I made Ceaser Cipher program for input DEVX
but my program do not run if input is DEVX FORUM, how to include space in ceaser cipher

Thanks a lot in advance for ur replies