Triple DES code?

Does anyone know where I can get Triple DES code for C?

I have a need to encode a 4-character value, but the built-in
encryption code does not exist in the 64-bit world of the
system I am using (AIX 5.3). The xcrypt_encrypt function
is there for 32-bit (in a module in libmodcrypt.a) but does not
exist for the 64-bit system. IBM has even told me that on
a lengthy support call recently.

If the algorithm is not too hairy, I can write the code myself,
but I am having trouble find that out in Google-land. I've
read bits and pieces of explanations discussing XOR, but it is
not clear to me that it is as simple as doing that three times.

Anyhow...
I have a
4-char value and can make up three 64-byte keys, no problem.
(Actuall 2 keys and repeat the first one which seems to be the
norm from what I have read).

Anyone know if there are any pieces of code out there that
I can grab?

Thanks!
.

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