des_key_schedule ks3,
des_cblock *ivec,
int enc);
- This function implements inner triple CBC DES encryption with 3
+ This function implements outer triple CBC DES encryption with 3
keys. What this means is that each 'DES' operation
inside the cbc mode is really an C=E(ks3,D(ks2,E(ks1,M))).
Again, this is cbc mode so an ivec is requires.