🚀 go-pugleaf

I was having my first look at libcrypto that comes with SSleay on the
linux platform. The RC2 and RC4 ciphers do not work, at least not as
said in the documentation.

For example the RC4 cipher does not work as directed. there are just two

functions here
RC4_set_key and RC4. Now the documentation does say that the key must be

set everytime you do the encryption. But this does not work. I had to
lok at the rc4.h file and
replace the two int members in the RC4_KEY manually to zero.

Then I started to read x bytes from a file and do:

read x bytes from file into in
RC4(key,x,in,out)
do key reset and zero setting as mentioned above
RC4(key,x,out,out1)

I collected the results into the results into a file and compared it
with the original file. This only worked with a files. It did not work
when I tried it with some some zip and binary files (basically).

Observe that the second time I use RC4 to decrypt I use x as the length
not the length of out. When I tried using the length of "out" the second

time instead of  x the process never worked. This latter approach is
what the documentation seems to suggest.

There were instances where the length of "in" and "out" were not the
same and infact with what I saw length(in) >= length(out).

Now this is a stream cipher right ? How do I output the encrypted stream

? With the lengths used in the original encrypt ?

The approach I tried failed completely when I stopped the immediate
decryption and tried to save the encrypted data to a file and then
decrypting it.

And lastly assuming that I do find a solution how do you work with
binary files ? Do uuencode or something ?

RC2 can be used similarly in cbc64 mode as per the documentation.

The documentation of these routines actually gives less information than

the header files themselves.

I would greatly appreciate it if someone replies and guides me.

Thanx
-tl201