* stateless <statel...@archlinux.us> [2013-06-19 11:38:00 +0100]: > This is a version of md5sum(1) using the md5 routines from 9base - slightly > adapted to compile. >
be careful with integer arithmetics in crypto code
your code invokes undefined behaviour because of
signed int overflow:
unsigned f(unsigned char c) { return c<<24; }
c is promoted to int not unsigned in the left shift
it will work in practice (usually) but that's only
by accident
you should cast c to the right type
